Facile synthesis of silver/silver thiocyanate (Ag@AgSCN) plasmonic nanostructures with enhanced photocatalytic performance

• Xinfu Zhao,
• Dairong Chen,
• Abdul Qayum,
• Bo Chen and
• Xiuling Jiao

Beilstein J. Nanotechnol. 2017, 8, 2781–2789, doi:10.3762/bjnano.8.277

• irradiated for 3 h, indicating the slow reduction of AgSCN under UV irradiation. UV–vis diffuse reflectance spectra of M0, M1, M2, M3, M4, and M5 are shown in Figure 2a. Here, the characteristic absorption of AgSCN appears at 200–350 nm and that from the surface plasmon resonance of Ag particles is above 350

• ) diffuse reflectance spectra (DRS) were recorded on an Agilent Cary 100 UV–vis spectrophotometer coupled to an integrating sphere with BaSO4 as reference. X-ray photoelectron spectra (XPS) were recorded on a Perkin-Elmer PHI-5300 ESCA spectrometer with a pass energy of 35.75 eV and an Al Kα line excitation

• -Elmer Lambda-35 UV–vis spectrometer. (a) XRD patterns of Ag@AgSCN nanostructures with different molar ratios of Ag to AgSCN. An (b) SEM image and (c) SAED pattern of the Ag@AgSCN nanostructure (sample M2). (a) UV–vis diffuse reflectance spectra of M0, M1, M2, M3, M4, M5. (b) Kubelka–Munk plots of M0 and

CdSe nanorod/TiO₂ nanoparticle heterojunctions with enhanced solar- and visible-light photocatalytic activity

• Fakher Laatar,
• Hatem Moussa,
• Halima Alem,
• Lavinia Balan,
• Emilien Girot,
• Ghouti Medjahdi,
• Hatem Ezzaouia and
• Raphaël Schneider

Beilstein J. Nanotechnol. 2017, 8, 2741–2752, doi:10.3762/bjnano.8.273

• UV–visible spectrophotometer. Diffuse reflectance spectra (DRS) were recorded on a Shimadzu 2600 UV−visible spectrophotometer. BaSO4 powder was used as a standard for baseline measurements and spectra were recorded in a range of 250–1400 nm. Raman spectra were recorded using an Xplora spectrometer

Hydrothermal synthesis of ZnO quantum dot/KNb₃O₈ nanosheet photocatalysts for reducing carbon dioxide to methanol

• Xiao Shao,
• Weiyue Xin and
• Xiaohong Yin

Beilstein J. Nanotechnol. 2017, 8, 2264–2270, doi:10.3762/bjnano.8.226

• images were obtained with a Tecnai G2 F20 instrument. The UV–vis diffuse reflectance spectra were captured by a Shimadzu UV–2550 UV–vis spectrophotometer using BaSO4 as a reference in the wavelength region of 200–800 nm. Photoluminescence (PL) spectra were measured at room temperature on a Renishaw 1000

• % ZnO quantum dot/KNb3O8 nanosheet composite photocatalyst. (a) UV–vis diffuse reflectance spectra of the ZnO quantum dot/KNb3O8 nanosheet composite photocatalysts; (b) (αhv)1/2 versus the photon energy of the ZnO quantum dot/KNb3O8 nanosheet composite photocatalysts. Yield of methanol using KNb3O8

• matches the lattice spacing of the (100) plane of the ZnO [25]. The lattice fringe spacing of 0.34 nm was observed in Figure 5, which is ascribed to the (031) plane of KNb3O8. Additionally, the elemental EDS analysis showed the sample to be composed of K, Nb, Zn and O in Figure 6. The UV–vis diffuse

Optical techniques for cervical neoplasia detection

• Tatiana Novikova

Beilstein J. Nanotechnol. 2017, 8, 1844–1862, doi:10.3762/bjnano.8.186

• biochemical properties of tissues. The different methods, including spectroscopic (diffuse reflectance spectroscopy, induced fluorescence and autofluorescence spectroscopy, Raman spectroscopy) and imaging techniques (confocal microscopy, optical coherence tomography, Mueller matrix imaging polarimetry

• such as diffuse reflectance spectroscopy, fluorescence spectroscopy, Raman spectroscopy, in vivo confocal microscopy, optical coherence tomography and multi-wavelength imaging Mueller polarimetry, as well as the combination of different techniques have been explored to improve the detection of cervical

• neoplasia. The results of these studies as well as current trends to miniaturization of diagnostic instruments will be discussed further. Optical spectroscopy and imaging In vivo diffuse reflectance optical spectroscopy (DRS) exploits the fact that abnormal zones of the cervical epithelium illuminated with

Two-dimensional carbon-based nanocomposites for photocatalytic energy generation and environmental remediation applications

• Suneel Kumar,
• Ashish Kumar,
• Ashish Bahuguna,
• Vipul Sharma and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2017, 8, 1571–1600, doi:10.3762/bjnano.8.159

ZnO nanoparticles sensitized by CuInZn_xS_2+x quantum dots as highly efficient solar light driven photocatalysts

• Florian Donat,
• Serge Corbel,
• Halima Alem,
• Steve Pontvianne,
• Lavinia Balan,
• Ghouti Medjahdi and
• Raphaël Schneider

Beilstein J. Nanotechnol. 2017, 8, 1080–1093, doi:10.3762/bjnano.8.110

• spectrophotometer. The photoluminescence (PL) spectra were recorded on a Horiba Fluoromax-4 Jobin Yvon spectrofluorimeter. The diffuse reflectance spectra (DRS) were recorded on a Shimadzu 2600 UV–vis spectrophotometer. BaSO4 powder was used as a standard for baseline measurements and spectra were recorded in a

• photocatalyst. Supporting Information The Supporting Information contains UV–vis absorption, photoluminescence emission and diffuse reflectance spectra, Tauc plots, EDS analysis, XPS spectra, plots of ln(C0/C), an XRD pattern and an SEM image of the reused catalyst and the photocatalytic experiments in air

High photocatalytic activity of Fe₂O₃/TiO₂ nanocomposites prepared by photodeposition for degradation of 2,4-dichlorophenoxyacetic acid

• Shu Chin Lee,
• Hendrik O. Lintang and
• Leny Yuliati

Beilstein J. Nanotechnol. 2017, 8, 915–926, doi:10.3762/bjnano.8.93

• the Fe(III) complex at 400 °C [5]. This is in contrast to the one prepared by the sol–gel method that showed an obviously reduced Eg value as the Fe ions were incorporated into the TiO2 lattice [7][19]. Diffuse reflectance (DR) UV–vis spectra and Tauc plots of the nanocomposites prepared by the

Investigation of the photocatalytic efficiency of tantalum alkoxy carboxylate-derived Ta₂O₅ nanoparticles in rhodamine B removal

• Subia Ambreen,
• Mohammad Danish,
• Narendra D. Pandey and
• Ashutosh Pandey

Beilstein J. Nanotechnol. 2017, 8, 604–613, doi:10.3762/bjnano.8.65

• . The distribution of particles is more uniform in the nanoparticles derived from carboxylato alkoxides than in those derived from alkoxides. UV–vis spectroscopy The optical properties of synthesized Ta2O5 nanoparticles were studied by UV–vis diffuse reflectance spectroscopy (DRS). The synthesized Ta2O5

• Ta2O5 synthesized from (a) Ta(On-Bu)4(OOCCH2Cl), (b) Ta(On-Bu)4(OOCCHCl2) and (c) Ta(On-Bu)4(OOCCCl3). Solid-state diffuse reflectance UV–vis spectrum and extrapolation of the band gap energy of Ta2O5 nanoparticles prepared from Ta(OEt)5. Degradation of RhB by Ta2O5 nanoparticles synthesized from (a) Ta

Tailoring bifunctional hybrid organic–inorganic nanoadsorbents by the choice of functional layer composition probed by adsorption of Cu²⁺ ions

• Veronika V. Tomina,
• Inna V. Melnyk,
• Yuriy L. Zub,
• Aivaras Kareiva,
• Miroslava Vaclavikova,
• Gulaim A. Seisenbaeva and
• Vadim G. Kessler

Beilstein J. Nanotechnol. 2017, 8, 334–347, doi:10.3762/bjnano.8.36

• surface layers were analyzed by diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, and 13C and 29Si solid-state NMR spectroscopy revealing their composition and organization. The fine chemical structure of the surface in the produced hybrid adsorbent particles and the ligand distribution

• were further investigated by electron paramagnetic resonance (EPR) and electron spectroscopy of diffuse reflectance (ESDR) spectroscopy using Cu2+ ion coordination as a probe. The composition and structure of the emerging surface complexes were determined and used to provide an insight into the

• potentially strong van der Waals bonding such as fluorinated groups. We also aimed to test the availability and reactivity of the amino function via Cu2+-cation adsorption as a probe, using electron paramagnetic resonance (EPR) and electron spectroscopy of diffuse reflectance (ESDR) spectroscopy. This

Colorimetric gas detection by the varying thickness of a thin film of ultrasmall PTSA-coated TiO₂ nanoparticles on a Si substrate

• Urmas Joost,
• Andris Šutka,
• Meeri Visnapuu,
• Aile Tamm,
• Meeri Lembinen,
• Mikk Antsov,
• Kathriin Utt,
• Krisjanis Smits,
• Ergo Nõmmiste and
• Vambola Kisand

Beilstein J. Nanotechnol. 2017, 8, 229–236, doi:10.3762/bjnano.8.25

• equipped with an internal diffuse reflectance accessory (DRA). The DRA was configured so that both diffuse reflectance and specular reflectance were measured. The flow cell was attached to the measurement window of the DRA and was fastened securely. The flow cell (Figure 1) was constructed using 1 mm thick

Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

• Anurag Roy,
• Partha Pratim Das,
• Mukta Tathavadekar,
• Sumita Das and
• Parukuttyamma Sujatha Devi

Beilstein J. Nanotechnol. 2017, 8, 210–221, doi:10.3762/bjnano.8.23

• ) Diffuse reflectance spectrum of the same films compared to bare ZnO and (c) a digital image showing the difference in contact angle for ethanolic solution of N719 dye for ZnO-R and ZnO-P films. (a,b) Microstructural FESEM and TEM bright field images of synthesized ZnO-P and (c,d) ZnO-R. FESEM images of

• by structural evaluation using X-ray diffraction analysis on an X’pert pro MPD XRD from PANanalytical with Cu Kα radiation. The microstructural study and cross-sectional thickness of the fabricated films were monitored on a scanning electron microscope (SEM) (LEO 430i, Carl Zeiss). Diffuse

• reflectance spectra were measured on a UV–vis–NIR spectrometer (Shimadzu, UV-3600) on the considered films. Contact angle (CA) measurements were performed on a KRUSS Drop Shape Analyser, Germany (DSA-4). The photovoltaic J–V characteristics were measured using a solar simulator (Newport) at 100 mW/cm2 (1 sun

Role of RGO support and irradiation source on the photocatalytic activity of CdS–ZnO semiconductor nanostructures

• Suneel Kumar,
• Rahul Sharma,
• Vipul Sharma,
• Gurunarayanan Harith,
• Vaidyanathan Sivakumar and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2016, 7, 1684–1697, doi:10.3762/bjnano.7.161

• K8002AA Carry 660 FTIR instrument. Optical properties were analyzed by UV–vis diffuse reflectance spectroscopy (DRS) using a Perkin Elmer UV/VIS/NIR Lambda 750 spectrophotometer, in which polytetrafluroethylene (PTFE) polymer was employed as internal reflectance standard. Morphology of the samples was

• characteristic diffraction peak around 2θ = 24° due to RGO is also absent in the ternary composite, which indicates that RGO sheets are not stacked due to the CdS–ZnO composite which inhibits the stacking. UV–vis diffuse reflectance spectroscopy (DRS) The optical properties of all prepared samples were analyzed

• by using UV–vis diffuse reflectance spectroscopy (DRS), the results of which are presented in Figure 2. It is clear from the DRS spectra that ZnO NR have an absorption band edge at 390 nm corresponding to a band gap value of 3.23 eV, which is in agreement with the reported band gap value of ZnO [45

Microwave synthesis of high-quality and uniform 4 nm ZnFe₂O₄ nanocrystals for application in energy storage and nanomagnetics

• Christian Suchomski,
• Ben Breitung,
• Ralf Witte,
• Michael Knapp,
• Sondes Bauer,
• Tilo Baumbach,
• Christian Reitz and
• Torsten Brezesinski

Beilstein J. Nanotechnol. 2016, 7, 1350–1360, doi:10.3762/bjnano.7.126

• an Agilent 5973 MSD. Diffuse reflectance ultraviolet–visible spectra were collected on a Lambda 750 UV–vis–NIR spectrophotometer (PerkinElmer) equipped with a Praying Mantis diffuse reflectance accessory. An MPMS XL-5 superconducting quantum interference device magnetometer (Quantum Design) was used

High performance Ce-doped ZnO nanorods for sunlight-driven photocatalysis

• Bilel Chouchene,
• Tahar Ben Chaabane,
• Lavinia Balan,
• Emilien Girot,
• Kevin Mozet,
• Ghouti Medjahdi and
• Raphaël Schneider

Beilstein J. Nanotechnol. 2016, 7, 1338–1349, doi:10.3762/bjnano.7.125

• [53]. Finally, the relative contributions of Ce4+ and Ce3+ states at the surface of ZnO rods were estimated to be 79 and 21%, respectively. To evaluate the photo-absorption behaviors of the ZnO:Ce materials, the UV–visible diffuse reflectance spectra (DRS) were recorded and shown in Figure 4 (undoped

• and Ce-doped ZnO rods and (b) magnification from 30 to 38°. Raman spectra of ZnO and ZnO:Ce rods. XPS analysis of the prepared ZnO:Ce (5%) rods. (a) Survey scan, and high resolution scans of (b) Zn 2p region, (c) O 1s region, and (d) Ce 3d region. Room temperature UV–visible diffuse reflectance

Photocurrent generation in carbon nanotube/cubic-phase HfO₂ nanoparticle hybrid nanocomposites

• Protima Rauwel,
• Augustinas Galeckas,
• Martin Salumaa,
• Frédérique Ducroquet and
• Erwan Rauwel

Beilstein J. Nanotechnol. 2016, 7, 1075–1085, doi:10.3762/bjnano.7.101

• with the fundamental absorption edge of HfO2 building up at around 5.6 eV. These assertions are supported by the similarity of the absorption edge and absence of CNT-related features in the spectrum of free-standing cubic HfO2 nanoparticles obtained earlier from the diffuse reflectance measurements [21

• CNT. (a) Absorption spectrum of MWCNTs decorated with cubic HfO2 nanoparticles obtained from the transmittance measurements of colloidal suspension in ethanol (blue curve) against that of free-standing HfO2 nanoparticles from the diffuse reflectance measurements (red curve). (b) Tauc plots of the

Selective photocatalytic reduction of CO₂ to methanol in CuO-loaded NaTaO₃ nanocubes in isopropanol

• Tianyu Xiang,
• Feng Xin,
• Jingshuai Chen,
• Yuwen Wang,
• Xiaohong Yin and
• Xiao Shao

Beilstein J. Nanotechnol. 2016, 7, 776–783, doi:10.3762/bjnano.7.69

• –precipitation mechanism, where the concentration of the NaOH solution played a crucial role on the morphology of the crystal. This was confirmed in our work. Figure 3 shows UV–vis diffuse reflectance spectra and optical absorption edges of NaTaO3 nanocubes prepared with different concentrations of NaOH. From

• particles were dispersed on the surface of the NaTaO3 nanocubes with an average size of tens of nanometers (Figure 5b and Figure 5c). When the loading reached 5 wt %, the CuO nanoparticles began to aggregate and large clusters were formed (Figure 5d). The UV–vis diffuse reflectance spectra of CuO–NaTaO3 are

• isopropanol to methanol was also proposed and explained by band theory. XRD patterns of NaTaO3 nanocubes. SEM images of NaTaO3 nanocubes: (a) 1M-NaTaO3, (b) 2M-NaTaO3, (c) 3M-NaTaO3, and (d) 4M-NaTaO3. UV–vis diffuse reflectance spectra (a) and optical absorption band edges (b) of NaTaO3 nanocubes. XRD

Transformation of hydrogen titanate nanoribbons to TiO₂ nanoribbons and the influence of the transformation strategies on the photocatalytic performance

• Melita Rutar,
• Nejc Rozman,
• Matej Pregelj,
• Carla Bittencourt,
• Romana Cerc Korošec,
• Andrijana Sever Škapin,
• Aleš Mrzel,
• Srečo D. Škapin and
• Polona Umek

Beilstein J. Nanotechnol. 2015, 6, 831–844, doi:10.3762/bjnano.6.86

• light [23], compared with the undoped TiO2. The optical absorption spectrum of TN-580 (Figure S7, see Supporting Information File 1) shows that the sample absorbs light up to 500 nm, whereas TO-580 and CH-W do not. A comparison of the diffuse reflectance spectra of the N-doped TiO2 (not shown) reveals

• sample holder. Diffuse reflectance spectra were acquired in the 200–800 nm range with a 0.5 nm step size using a UV–vis–NIR spectrometer (Shimadzu UV-3600) equipped with an integrating sphere (ISR-3100, 60 mm) and BaSO4 as a standard. The Kubelka–Munk function was applied to convert the diffuse

• oxidation of isopropanol under UV–vis illumination. Acknowledgements M. Rutar thanks Dr. Vojka Žunič, Jožef Stefan Institute, for her help with diffuse reflectance measurements on a UV–vis spectrometer, and Prof. Dr. Denis Arčon, Jožef Stefan Institute, for his help with the EPR measurements. C

Tm-doped TiO₂ and Tm₂Ti₂O₇ pyrochlore nanoparticles: enhancing the photocatalytic activity of rutile with a pyrochlore phase

• Desiré M. De los Santos,
• Javier Navas,
• Teresa Aguilar,
• Antonio Sánchez-Coronilla,
• Concha Fernández-Lorenzo,
• Rodrigo Alcántara,
• Jose Carlos Piñero,
• Ginesa Blanco and
• Joaquín Martín-Calleja

Beilstein J. Nanotechnol. 2015, 6, 605–616, doi:10.3762/bjnano.6.62

• study the optical properties of the samples and to determine the band gap energy, UV–vis spectroscopy in diffuse reflectance (DR–UV–vis) mode was used. The custom-built system was composed of: (i) an integrating sphere (Spectra Tech), (ii) a spectrometer (USB2000+, Ocean Optics), and (iii) a xenon lamp

• (Spectral Products, ASB-XE-175) as an illumination source. The Kubelka–Munk formalism and Tauc plots were used to determine the band gap energy. The Kubelka–Munk function for diffuse reflectance (R) is For a semiconductor, the plot of [f(R)·hν]n versus hν shows a linear region for n = ½ if the band gap is

• synthesized samples obtained in diffuse reflectance mode. Band gap energy values as a function of Tm doping concentration at different annealing temperatures. Raman spectra obtained using a 532 nm (a) and a 785 nm (b) illumination source. (a) TEM image of 2 atom % Tm-doped sample annealed at 1173 K and EELS

Novel ZnO:Ag nanocomposites induce significant oxidative stress in human fibroblast malignant melanoma (Ht144) cells

• Syeda Arooj,
• Samina Nazir,
• Akhtar Nadhman,
• Nafees Ahmad,
• Bakhtiar Muhammad,
• Ishaq Ahmad,
• Kehkashan Mazhar and
• Rashda Abbasi

Beilstein J. Nanotechnol. 2015, 6, 570–582, doi:10.3762/bjnano.6.59

• formulations of ZnO:Ag (1, 3, 5, 10, 20 and 30% Ag) were synthesized by a simple co-precipitation method and characterized by powder X-ray diffraction, scanning electron microscopy, Rutherford back scattering and diffuse reflectance spectroscopy for their structure, morphology, composition and optical band gap

Conformal SiO₂ coating of sub-100 nm diameter channels of polycarbonate etched ion-track channels by atomic layer deposition

• Nicolas Sobel,
• Christian Hess,
• Manuela Lukas,
• Anne Spende,
• Bernd Stühn,
• M. E. Toimil-Molares and
• Christina Trautmann

Beilstein J. Nanotechnol. 2015, 6, 472–479, doi:10.3762/bjnano.6.48

• species. Hydrogen chloride is a byproduct. It has been reported that reaction of pyridine and hydrogen chloride may lead to the formation of pyridinium salt [31]. FTIR spectroscopy Infrared spectra were recorded at room temperature in diffuse reflectance on a Bruker Vertex 70 system equipped with a

• Composition and growth mechanism The composition of the ALD layer is decisive for the functionality of the modified membrane, and thus was analyzed by XP and FTIR spectroscopy. Figure 2 shows diffuse reflectance FTIR spectra of a pristine PC membrane (black), and of two membranes coated with 28 (red) and 112

• based on SiO2-surface modification. Schematics of the fabrication of SiO2 coated membranes: (a) irradiation of PC foil with GeV heavy ions, (b) chemical etching of ion tracks to form cylindrical nanochannels, (c) ALD conformal coating of porous membrane. Diffuse reflectance FTIR spectra of uncoated

Palladium nanoparticles anchored to anatase TiO₂ for enhanced surface plasmon resonance-stimulated, visible-light-driven photocatalytic activity

• Kah Hon Leong,
• Hong Ye Chu,
• Shaliza Ibrahim and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2015, 6, 428–437, doi:10.3762/bjnano.6.43

• field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), BET surface area, UV–vis diffuse reflectance spectra (UV-DRS), Raman and photoluminescence (PL) analyses. The simple and smart synthesis anchored well the deposition

• absorbance spectrum was calculated by using the UV–vis diffuse reflectance spectra and it is shown in Figure 7. As predicted and according to theory, the absorption band shown by anatase TiO2 sample due to the charge-transfer absorption from the oxide anions 2p orbital valence band to the conduction band of

• radiation (225 W, 15 mA, 15 kV). The C1s binding energy of adventitious carbon (284.9 eV) was used as reference. UV–vis diffuse reflectance spectra (UV-DRS) were performed with a Shimadzu UV-2600 spectrophotometer equipped with an integrating sphere attachment. The spectra were obtained with BaSO4 as a

Characterization and photocatalytic study of tantalum oxide nanoparticles prepared by the hydrolysis of tantalum oxo-ethoxide Ta₈(μ₃-O)₂(μ-O)₈(μ-OEt)₆(OEt)₁₄

• Subia Ambreen,
• N D Pandey,
• Peter Mayer and
• Ashutosh Pandey

Beilstein J. Nanotechnol. 2014, 5, 1082–1090, doi:10.3762/bjnano.5.121

• is also supported by the DSC graph. Band-gap determination of the Ta2O5 nanoparticles The band gap energy (Eg) is a key feature of semiconductors that determines their applications in optoelectronics. The nanoparticles were pressed into thick pellets and subject to diffuse reflectance measurement

• chloroform dispersion. TEM image of the TOPO-coated Ta2O5 nanoparticles. The scale bar corresponds to 200 nm. Thermogravimetry (TGA), differential thermal analysis (DTA) and differential scanning calorimetry (DSC) of the as-synthesized Ta2O5 nanoparticles. Solid state diffuse reflectance UV–vis spectra of

Biomolecule-assisted synthesis of carbon nitride and sulfur-doped carbon nitride heterojunction nanosheets: An efficient heterojunction photocatalyst for photoelectrochemical applications

• Hua Bing Tao,
• Hong Bin Yang,
• Jiazang Chen,
• Jianwei Miao and
• Bin Liu

Beilstein J. Nanotechnol. 2014, 5, 770–777, doi:10.3762/bjnano.5.89

• eV than for that at 168.2 eV suggests that the replacement of the secondary nitrogen with sulfur in CN is more favorable. The effects of sulfur doping on the optical and energy band structure were investigated by UV–vis absorption and Mott–Schottky measurements. Figure 2a shows the UV–vis diffuse

• reflectance spectra of CN and CNS. Both CN and CNS feature a semiconductor-like absorption. The abrupt absorption onset for CN and CNS at ca. 450 nm is due to the photoexcitation of electrons from the valence band to the conduction band. The tail absorption in the long wavelength region for CNS could be

Effects of the preparation method on the structure and the visible-light photocatalytic activity of Ag₂CrO₄

• Difa Xu,
• Shaowen Cao,
• Jinfeng Zhang,
• Bei Cheng and
• Jiaguo Yu

Beilstein J. Nanotechnol. 2014, 5, 658–666, doi:10.3762/bjnano.5.77

• areas are beneficial for the enhancement of photocatalytic performance by facilitating the absorption of pollutants for degradation. UV–vis spectroscopy measurements A comparison of UV–vis diffuse reflectance spectra (DRS) and the corresponding colours of the Ag2CrO4 samples are displayed in Figure 5

• photocatalytic reaction, the corresponding SEM and TEM images, XRD pattern, and UV–vis diffuse reflectance spectrum were collected. Figure 9a and Figure 9b show that the overall morphology and average particle size of Ag2CrO4 were not changed significantly. However, some homogenously distributed Ag nanoparticles

• corresponding FFT image. Nitrogen adsorption-desorption isotherms and corresponding pore size distribution curves (inset) of Ag2CrO4 samples prepared by different methods: (a) microemulsion, (b) precipitation, and (c) hydrothermal. UV–visible diffuse reflectance spectra, the calculated band gaps (upper right

High activity of Ag-doped Cd_0.1Zn_0.9S photocatalyst prepared by the hydrothermal method for hydrogen production under visible-light irradiation

• Leny Yuliati,
• Melody Kimi and
• Mustaffa Shamsuddin

Beilstein J. Nanotechnol. 2014, 5, 587–595, doi:10.3762/bjnano.5.69

• particle sizes in the range of 10–70 nm. For all samples, the morphology of Cd0.1Zn0.9S was not affected by the added Ag. Figure 5 shows the diffuse reflectance UV–visible (DR UV–vis) spectra of samples prepared by the hydrothermal method. The Cd0.1Zn0.9S showed a shoulder peak around 400–500 nm (Figure 5a