Doxorubicin-loaded gold nanorods: a multifunctional chemo-photothermal nanoplatform for cancer management

• Uzma Azeem Awan,
• Abida Raza,
• Shaukat Ali,
• Rida Fatima Saeed and
• Nosheen Akhtar

Beilstein J. Nanotechnol. 2021, 12, 295–303, doi:10.3762/bjnano.12.24

• characterization of PSS-GNRs showed that the LSPR peak of GNRs strongly depends on their aspect ratio. Hence, the LSPR peak position is an excellent indicator for any shape changes of GNRs. An aqueous solution of PSS-GNRs after laser exposure for 2 min (power density = 1.5 W/cm2) remained stable. The LSPR peak

• -suspended in 2 mL deionized water and stored at 4 °C. Doxorubicin-loaded PSS-GNRs The anticancer drug DOX was loaded onto the surface of PSS-GNRs by a previously reported simple stirring method with slight modifications [30]. PSS-GNRs (40 µg/mL, 2 mL) were added to an aqueous solution of DOX at a final

• efficiency (DLE) was calculated using the formula given below: Photothermal stability of PSS-GNRs The photothermal stability of PSS-GNRs was measured using a previously described method [23]. Briefly, the aqueous solution of PSS-GNRs was irradiated with NIR laser (power density = 1.5 W/cm2) for 2 min and

A review on the green and sustainable synthesis of silver nanoparticles and one-dimensional silver nanostructures

• Sina Kaabipour and
• Shohreh Hemmati

Beilstein J. Nanotechnol. 2021, 12, 102–136, doi:10.3762/bjnano.12.9

Atomic layer deposited films of Al₂O₃ on fluorine-doped tin oxide electrodes: stability and barrier properties

• Hana Krýsová,
• Michael Neumann-Spallart,
• Hana Tarábková,
• Pavel Janda,
• Ladislav Kavan and
• Josef Krýsa

Beilstein J. Nanotechnol. 2021, 12, 24–34, doi:10.3762/bjnano.12.2

• ) to a redox couple in aqueous solution. ALD Al2O3 films on FTO dissolved rapidly in a 1 M NaOH solution. After 1 h of exposure, a CV curve with the ferricyanide/ferrocyanide couple approached that for uncovered FTO. This corresponded to a dissolution rate of ≈100 nm/h. The films dissolved slower in 1

Nanocasting synthesis of BiFeO₃ nanoparticles with enhanced visible-light photocatalytic activity

• Thomas Cadenbach,
• Maria J. Benitez,
• A. Lucia Morales,
• Cesar Costa Vera,
• Luis Lascano,
• Francisco Quiroz,
• Alexis Debut and
• Karla Vizuete

Beilstein J. Nanotechnol. 2020, 11, 1822–1833, doi:10.3762/bjnano.11.164

• wet impregnation process and a calcination procedure with intermediate plateaus, monodisperse 5.5 nm BiFeO3 nanoparticles were successfully obtained. Furthermore, the nanoparticles were applied in photodegradation reactions of rhodamine B in aqueous solution under visible-light irradiation. Notably

Self-standing heterostructured NiC_x-NiFe-NC/biochar as a highly efficient cathode for lithium–oxygen batteries

• Shengyu Jing,
• Xu Gong,
• Shan Ji,
• Linhui Jia,
• Bruno G. Pollet,
• Sheng Yan and
• Huagen Liang

Beilstein J. Nanotechnol. 2020, 11, 1809–1821, doi:10.3762/bjnano.11.163

• based on [40][41][42]. Several pieces of NiFe-PBA/PP precursors were immersed in a NaOH solution containing anhydrous ethanol (20 mL) and 0.025 mol·L−1 NaOH aqueous solution (30 mL). The obtained solution was transferred to a Teflon-lined autoclave and heated to 100 °C for 30 min. The obtained products

PEG/PEI-functionalized single-walled carbon nanotubes as delivery carriers for doxorubicin: synthesis, characterization, and in vitro evaluation

• Shuoye Yang,
• Zhenwei Wang,
• Yahong Ping,
• Yuying Miao,
• Yongmei Xiao,
• Lingbo Qu,
• Lu Zhang,
• Yuansen Hu and
• Jinshui Wang

Beilstein J. Nanotechnol. 2020, 11, 1728–1741, doi:10.3762/bjnano.11.155

• from PEI make the CNTs much more soluble in aqueous solution and thus improve their biocompatibility [37]. Furthermore, surface modification with PEGylated agents or positively charged groups can protect the nanocarriers by providing a steric barrier from being recognized and captured by the

• be obtained by acidification and functionalization. All the above results demonstrate that the raw SWCNTs are shortened and functionalized while retaining their spectroscopical properties. The carboxylated and the functionalized CNTs are individually dispersed in aqueous solution, suitable for

Piezoelectric sensor based on graphene-doped PVDF nanofibers for sign language translation

• Shuai Yang,
• Xiaojing Cui,
• Rui Guo,
• Zhiyi Zhang,
• Shengbo Sang and
• Hulin Zhang

Beilstein J. Nanotechnol. 2020, 11, 1655–1662, doi:10.3762/bjnano.11.148

• is added under stirring to yield the spinning solution for electrospinning. After preparation of the fibers, an aqueous solution of Ti3C2 MXene and Ag NWs is sprayed on both sides of the material and then dried. Finally, the nanowire membrane is covered on both sides with PDMS to obtain the

High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid

• Raid A. Ismail,
• Hanan A. Rawdhan and
• Duha S. Ahmed

Beilstein J. Nanotechnol. 2020, 11, 1596–1607, doi:10.3762/bjnano.11.142

• Raid A. Ismail Hanan A. Rawdhan Duha S. Ahmed Department of Applied Science, University of Technology, Baghdad, Iraq 10.3762/bjnano.11.142 Abstract We report the synthesis of α-Ag2S nanoparticles (NPs) by one-step laser ablation of a silver target in aqueous solution of thiourea (Tu, CH4N2S

• Ag2S NPs were prepared by laser ablation of a high-purity silver target in an aqueous solution of thiourea (Tu, CH4N2S) mixed with an aqueous solution of the surfactant cetyltrimethylammonium bromide (CTAB, C19H42BrN). To prepare the ablation liquid, 0.39 g of Tu was dissolved in 10 mL of double

Fabrication of nano/microstructures for SERS substrates using an electrochemical method

• Jingran Zhang,
• Tianqi Jia,
• Xiaoping Li,
• Junjie Yang,
• Zhengkai Li,
• Guangfeng Shi,
• Xinming Zhang and
• Zuobin Wang

Beilstein J. Nanotechnol. 2020, 11, 1568–1576, doi:10.3762/bjnano.11.139

• and dipped into an aqueous solution of R6G (10−7 mol·L−1) for 20 min. The excess R6G molecules were removed by rinsing with ethanol and a gentle nitrogen flow was used to dry the samples. A micro-Raman inVia spectroscopic system (Renishaw, UK) with 532 and 785 nm lasers was used. The incident optical

Cu₂O nanoparticles for the degradation of methyl parathion

• Juan Rizo,
• David Díaz,
• Benito Reyes-Trejo and
• M. Josefina Arellano-Jiménez

Beilstein J. Nanotechnol. 2020, 11, 1546–1555, doi:10.3762/bjnano.11.137

• used for the synthesis of Cu2O NPs with different sizes, it is not used in the degradation of MP. Methyl parathion degradation The degradation of MP was achieved in deionized water by reacting MP with Cu2O NPs in a 1:5 molar ratio. This was carried out using 250 mL of a 1.5 × 10−4 M aqueous solution of

• . Observed degradation pathway of MP with Cu2O NPs in aqueous solution to form 4-nitrophenol and dimethyl phosphate. Numbers in blue indicate the observed 1H NMR chemical shifts (δ) in parts per million (ppm) while the numbers in red correspond to 31P. 4-Nitrophenol can further be reduced to 4-aminophenol as

Antimicrobial metal-based nanoparticles: a review on their synthesis, types and antimicrobial action

• Matías Guerrero Correa,
• Fernanda B. Martínez,
• Cristian Patiño Vidal,
• Camilo Streitt,
• Juan Escrig and
• Carol Lopez de Dicastillo

Beilstein J. Nanotechnol. 2020, 11, 1450–1469, doi:10.3762/bjnano.11.129

• bacteria and fungi, has increased. The antimicrobial activity of CuO NPs obtained from an Actinomycete bacteria in a copper sulfate aqueous solution was tested against a few pathogenic bacteria, such as Staphylococcus aureus, Bacillus cereus, Proteus mirabilis, Edwardsiella tard, Aeromonas caviae

Transient coating of γ-Fe₂O₃ nanoparticles with glutamate for its delivery to and removal from brain nerve terminals

• Konstantin Paliienko,
• Artem Pastukhov,
• Michal Babič,
• Daniel Horák,
• Olga Vasylchenko and
• Tatiana Borisova

Beilstein J. Nanotechnol. 2020, 11, 1381–1393, doi:10.3762/bjnano.11.122

• Synthesis of superparamagnetic maghemite (γ-Fe2O3) nanoparticles γ-Fe2O3 nanoparticles were synthesized and characterized according to [21]. A 0.5 M solution of NH4OH (subaliquot amount needed for quantitative formation of Fe(OH)3) was added dropwise to a 0.5 M aqueous solution of FeCl3 under sonication

• biocoating at the nanoparticle surface. As shown in Figure 5, 10 mM KCl had no effect on the ability of γ-Fe2O3 nanoparticles, at concentrations of 0.75, 1.5, and 3 mg/mL, to adsorb 1.86 µM glutamate/ʟ-[14C]glutamate compared to an aqueous solution. Also, an almost complete inhibition of glutamate/ʟ-[14C

Structure and electrochemical performance of electrospun-ordered porous carbon/graphene composite nanofibers

• Yi Wang,
• Yanhua Song,
• Chengwei Ye and
• Lan Xu

Beilstein J. Nanotechnol. 2020, 11, 1280–1290, doi:10.3762/bjnano.11.112

• standard three-electrode cell at room temperature. A graphite rod was used as the counter electrode, Hg/HgO was used as the reference electrode, and a 6.0 M KOH aqueous solution was used as the electrolyte solution. The electrochemical performance of the CCGNFs was investigated using an electrochemical

Magnetic-field-assisted synthesis of anisotropic iron oxide particles: Effect of pH

• Andrey V. Shibaev,
• Petr V. Shvets,
• Darya E. Kessel,
• Roman A. Kamyshinsky,
• Anton S. Orekhov,
• Sergey S. Abramchuk,
• Alexei R. Khokhlov and
• Olga E. Philippova

Beilstein J. Nanotechnol. 2020, 11, 1230–1241, doi:10.3762/bjnano.11.107

• (TEM) To prepare the TEM specimens, a drop (10 μL) of a freshly sonicated nanoparticle aqueous solution was deposited onto a 140 mesh Formvar-coated copper grid and and air-dried under ambient conditions. TEM micrographs and electron diffraction patterns were obtained on a LEO 912 AB OMEGA microscope

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

• Mykola Borzenkov,
• Piersandro Pallavicini,
• Angelo Taglietti,
• Laura D’Alfonso,
• Maddalena Collini and
• Giuseppe Chirico

Beilstein J. Nanotechnol. 2020, 11, 1134–1146, doi:10.3762/bjnano.11.98

• of successful studies, the direct application of colloidal solutions containing photothermally active gold nanoparticles may be limited particularly due to the risk of accumulation in the body. Moreover, due to the heat dissipation in aqueous solution, high laser intensities are usually required to

Thermophoretic tweezers for single nanoparticle manipulation

• Jošt Stergar and
• Natan Osterman

Beilstein J. Nanotechnol. 2020, 11, 1126–1133, doi:10.3762/bjnano.11.97

• with an aqueous solution of bovine serum albumin (Sigma-Aldrich) and washed to prevent nanoparticle adhesion to the glass. A collimated IR laser beam (Compass 1064-2500MN, Coherent, λ = 1064 nm) is deflected with a pair of acousto-optic deflectors (AODs). AODs enable the simultaneous generation of

Plant growth regulation by seed coating with films of alginate and auxin-intercalated layered double hydroxides

• Vander A. de Castro,
• Valber G. O. Duarte,
• Danúbia A. C. Nobre,
• Geraldo H. Silva,
• Vera R. L. Constantino,
• Frederico G. Pinto,
• Willian R. Macedo and
• Jairo Tronto

Beilstein J. Nanotechnol. 2020, 11, 1082–1091, doi:10.3762/bjnano.11.93

• , indicating that the release process was endothermic. The total released amounts of NAA and IBA at pH 4 and pH 12 were higher than the quantities released at pH 7. The study of electrolytes evidenced that the released quantities of NAA and IBA depend on the interfering anion present in the aqueous solution

Gas-sensing features of nanostructured tellurium thin films

• Dumitru Tsiulyanu

Beilstein J. Nanotechnol. 2020, 11, 1010–1018, doi:10.3762/bjnano.11.85

• grow Te nanoflakes. In order to synthesize Te nanowires, Liang and collaborators [13] performed chemical reactions of Na2TeO3, in aqueous solution, via hydrothermal treatment, whereas Ma and colleagues [14] used a solvothermal approach on glass substrates. To synthesize Te nanotubes, techniques such as

A 3D-polyphenylalanine network inside porous alumina: Synthesis and characterization of an inorganic–organic composite membrane

• Jonathan Stott and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2020, 11, 938–951, doi:10.3762/bjnano.11.78

• , 1454 m, 1441 w, 1259 m, 743 m, 695 m, 483 m cm−1. Adsorption analysis. 2 mL of an aqueous solution of chloroanilic acid (48 µM) was pumped through the porous ALOX-membranes with a syringe pump at a flow rate of 1 mL/min. Prior conditioning of the ALOX-membrane was done by activation with 2 mL of

Key for crossing the BBB with nanoparticles: the rational design

• Sonia M. Lombardo,
• Marc Schneider,
• Akif E. Türeli and
• Nazende Günday Türeli

Beilstein J. Nanotechnol. 2020, 11, 866–883, doi:10.3762/bjnano.11.72

• than that of the drug alone [170]. Moreover, in a study by Tsai et al., baicalein was loaded inside NLCs prepared with poloxamer 188. The NLCs revealed 7.5- and 4.7-fold higher baicalein accumulations in the cerebral cortex and brainstem, respectively, compared to the aqueous solution [171]. It is also

Effect of Ag loading position on the photocatalytic performance of TiO₂ nanocolumn arrays

• Jinghan Xu,
• Yanqi Liu and
• Yan Zhao

Beilstein J. Nanotechnol. 2020, 11, 717–728, doi:10.3762/bjnano.11.59

• photocatalysis was performed under 300 W Xe light using 15 mL of a 5 ppm MB aqueous solution. Before starting the photocatalysis, the sample was immersed in the MB solution and allowed to remain in the dark for 30 min to reach the adsorption–desorption balance. Then, the solution was placed under a light source

Preparation, characterization and photocatalytic performance of heterostructured CuO–ZnO-loaded composite nanofiber membranes

• Wei Fang,
• Liang Yu and
• Lan Xu

Beilstein J. Nanotechnol. 2020, 11, 631–650, doi:10.3762/bjnano.11.50

• Hydrothermal process Preparation of growth solution: The growth solutions used in the hydrothermal process were obtained by preparing mixtures of C6H12N4, NH3·H2O, and a saturated aqueous solution of CuSO4 and ZnCl2. The saturated solution of CuSO4 and ZnCl2 was prepared by dissolving an excess of CuSO4 and

Silver-decorated gel-shell nanobeads: physicochemical characterization and evaluation of antibacterial properties

• Marta Bartel,
• Katarzyna Markowska,
• Marcin Strawski,
• Krystyna Wolska and
• Maciej Mazur

Beilstein J. Nanotechnol. 2020, 11, 620–630, doi:10.3762/bjnano.11.49

• structures are stable in aqueous solution, this may not be the case after addition of surfactants or the exchange of the solvent for a more hydrophobic one. Zhao et al. [23] proposed to incorporate silver nanoparticles into polystyrene/polystyrene sulfonate particles through accumulation of a silver complex

• sulfonated nanobeads. The beads were mixed with 150 µL aqueous AgNO3 solution (0.0125 M) for ca. 30 min followed by the addition of 150 µL of a freshly prepared aqueous solution of NaBH4 (0.075 M) and PVP (40 mg/mL). Subsequently, this mixture was kept at 55 °C and stirred using ultrasound for 30 min. The

• final product was collected by centrifugation (13400 rpm, 12100g, 5 min), and washed several times with deionized water. Preparation of silver nanoparticles (non-incorporated in polymer beads): 150 µL of a freshly prepared solution of NaBH4 (0.075 M) in an aqueous solution of PVP (40 mg/mL) was added to

Soybean-derived blue photoluminescent carbon dots

• Shanshan Wang,
• Wei Sun,
• Dong-sheng Yang and
• Fuqian Yang

Beilstein J. Nanotechnol. 2020, 11, 606–619, doi:10.3762/bjnano.11.48

• hydrothermally carbonized soybean residual. Briefly, a suspension consisting of ≈40 g of ground soybean residual and ≈5 mL of 1 wt % H2SO4 aqueous solution was prepared and stirred ultrasonically. The suspension was transferred into a Teflon-lined autoclave, which was then placed in an oven for the HTC

• obtained after filtration were named as annealed-CDs. Laser ablation in NH4OH solution Figure 1 illustrates the process for the synthesis of CDs from ground soybean residual and the setup for the laser ablation of the annealed-HTC carbon particles in NH4OH aqueous solution. Using a prism and an optical

• h. A mechanical press of the heated mixture at 6000 psi for 5 min led to the formation of a circular pellet of ≈1.27 cm in diameter and ≈1 mm in thickness. The circular pellet was transferred to a self-made vial with a quartz window for laser ablation, and ≈3 mL NH4OH aqueous solution was added to

Adsorptive removal of bulky dye molecules from water with mesoporous polyaniline-derived carbon

• Hyung Jun An,
• Jong Min Park,
• Nazmul Abedin Khan and
• Sung Hwa Jhung

Beilstein J. Nanotechnol. 2020, 11, 597–605, doi:10.3762/bjnano.11.47

• Information File 1. In order to understand the adsorption mechanism, the solution pH for AR1 and JGB was controlled (up to 2–12) with aqueous solution of NaOH or HCl (0.1 M each). (a) N2 adsorption isotherms and (b) pore size distribution of PDC materials and activated carbon (AC) . Amount of adsorbed (a) H2O