Nanoarchitectonics with cetrimonium bromide on metal nanoparticles for linker-free detection of toxic metal ions and catalytic degradation of 4-nitrophenol

• Akash Kumar and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2024, 15, 1312–1332, doi:10.3762/bjnano.15.106

• CTAB micelles without hampering the physicochemical properties of the synthesized nanoparticles. This weakening of CTAB solves the persistent problem of surface modification or the use of linker molecules with CTAB-capped nanoparticles for sensing applications. In addition, the nanorod size might be

• crucial regarding nanorod–metal interactions. In a previous study conducted by Xu et al., Cu2+ was detected with cysteine-functionalized CTAB-AuNR (λmax 800 nm), while Hg2+ was detected with cysteine-functionalized CTAB-AuNR (λmax 650 nm) [50][52]. Both ʟ-cysteine-functionalized CTAB-AuNR detected

• to detect Pb2+ in the presence of sodium thiosulfate due to the thiol group’s higher affinity for metal ions [24]. Furthermore, the study found that AuNR1 and AuNR2 detected metals only in the presence of NaOH, possibly due to the removal of CTAB from the nanorod curvature, which is known to contain

Gold nanomakura: nanoarchitectonics and their photothermal response in association with carrageenan hydrogels

• Nabojit Das,
• Vikas,
• Akash Kumar,
• Sanjeev Soni and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2024, 15, 678–693, doi:10.3762/bjnano.15.56

• images were captured using AFM as shown in Figure 4d–f confirming the topography of AuNMs. Therefore, it was clearly observed from the complementing results obtained through TEM and AFM that the shape of the nanoparticles is makura. It can be assumed that the breaking of nanorod-shape symmetry into a

• , we chose one shorter and one longer nanorod to make the current study conclusive [29]. Interestingly, CTAB-AuNR and DTAB-AuNR showed a significant temperature rise of 16.7 and 20 °C, respectively, as shown in Figure 8b at colloidal state. The high temperature change in case of DTAB-AuNR clearly

Plasmonic nanotechnology for photothermal applications – an evaluation

• A. R. Indhu,
• L. Keerthana and
• Gnanaprakash Dharmalingam

Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

• Ioana Marica,
• Fran Nekvapil,
• Maria Ștefan,
• Cosmin Farcău and
• Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

• . With increasing the glycol chain length, the average particle size of ZnO is also increased [27]. Employing ethylene glycol as a polyol led to assembled hollow sphere structures, while diethylene glycol resulted in elliptical nanorod structures [29]. The simplicity and environmentally friendly

• controlled method. ZnO nanorods were first grown and the rod surface was then decorated with Au NPs, resulting in ZnO nanorods with an average diameter of 300 nm and spherical Au NPs with sizes between 5 and 10 nm [46]. ZnO nanorod arrays were obtained by hydrothermal synthesis and then Ag NPs were deposited

• broad range of wavelengths. This multiplexing property was investigated for ZnO nanoflower (NF) and nanorod arrays by [114]. Different Alexa Fluor (AF) dyes were used and the results showed a significant enhancement of their fluorescence over the entire visual spectral range (400–840 nm). Specifically

A comprehensive review on electrospun nanohybrid membranes for wastewater treatment

• Senuri Kumarage,
• Imalka Munaweera and
• Nilwala Kottegoda

Beilstein J. Nanotechnol. 2022, 13, 137–159, doi:10.3762/bjnano.13.10

The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles

• Nabojit Das,
• Akash Kumar and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2021, 12, 924–938, doi:10.3762/bjnano.12.69

• adsorbed on the nanorod surface. The gold nanorods have excellent capability to be used in imaging as an optoacoustic contrast agent [62][63]. Poly(ethylene glycol) (PEG) is well known for reducing non-specific binding to biological molecules, rendering stealth character. This avoids macrophage recognition

Comprehensive review on ultrasound-responsive theranostic nanomaterials: mechanisms, structures and medical applications

• Sepand Tehrani Fateh,
• Lida Moradi,
• Elmira Kohan,
• Michael R. Hamblin and
• Amin Shiralizadeh Dezfuli

Beilstein J. Nanotechnol. 2021, 12, 808–862, doi:10.3762/bjnano.12.64

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

• ) and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) were purchased from Sigma-Aldrich. Deionized (DI) water, having a resistance of 18 MΩ·cm, was used throughout the experiments. Gold nanorod synthesis GNRs were synthesized through seed-mediated growth [25] with a slight

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

• . [47] employed femtosecond laser irradiation to fabricate nanorod arrayed structures decorated with Au nanoparticles. The study showed that the Raman intensity tended to decrease as the Au film thickness increased. Based on the above results, we selected Au films of 10 nm thickness for further

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

• obtained at a slightly acidic pH. Thus, we determined the optimum pH for nanorod preparation. High-resolution transmission electron microscopy (HRTEM) results showed that the synthesized nanorods were single crystals formed by the magnetic-field-assisted growth of small nanocrystals, whereas some amount of

• be identified. For instance, Figure 7A shows distinct lattice fringes with a spacing of 2.96 Å, which corresponds to the Fe3O4 {220} crystal plane. The major axis of this nanorod is in the [211] direction. The image lies in the {111} plane. From the [111] direction, the magnetite crystal lattice is

• is due to the dipole–dipole interaction between their building blocks (small hexagonal faceted magnetite nanocrystals), which are formed during the first step of the reaction. The findings of this paper open a route for the precise control of magnetite nanorod morphology using a simple magnetic-field

Microwave-induced electric discharges on metal particles for the synthesis of inorganic nanomaterials under solvent-free conditions

• Vijay Tripathi,
• Harit Kumar,
• Anubhav Agarwal and
• Leela S. Panchakarla

Beilstein J. Nanotechnol. 2020, 11, 1019–1025, doi:10.3762/bjnano.11.86

• forms ZnF2. The XRD patterns in Figure 3a confirm the formation of ZnF2. Both nanorods and nanoparticles of ZnF2 were formed as can be seen from the SEM image (Figure 3c). Figure 3d shows the energy-dispersive spectroscopy (EDS) mapping of Zn and F, which confirms the presence of Zn and F in the nanorod

• experiment without sulfur yielded only Ni nanoparticles. Figure S7 in Supporting Information File 1 shows SEM and TEM images of NiF2 nanorods. The EDS mapping in Figure S7c (Supporting Information File 1) confirms the presence of Ni, F and C in the NiF2 nanorods. A TEM image of NiF2 nanorod covered with

• amorphous carbon is shown in Figure S7d (Supporting Information File 1). The HRTEM image (Figure S7e, Supporting Information File 1) clearly shows the single-crystalline nature of the NiF2 nanorod. Interestingly, microwave treatment of copper in the presence of sulfur in Teflon yielded CuS nanorods instead

Formation of nanoripples on ZnO flat substrates and nanorods by gas cluster ion bombardment

• Xiaomei Zeng,
• Vasiliy Pelenovich,
• Bin Xing,
• Rakhim Rakhimov,
• Wenbin Zuo,
• Alexander Tolstogouzov,
• Chuansheng Liu,
• Dejun Fu and
• Xiangheng Xiao

Beilstein J. Nanotechnol. 2020, 11, 383–390, doi:10.3762/bjnano.11.29

• formation is studied. Wavelength and height of the nanoripples increase with increasing accelerating voltage and fluence for both targets. The nanoripples formed on the flat substrates remind of aeolian sand ripples. The ripples formed at high ion fluences on the nanorod facets resemble well-ordered

• parallel steps or ribs. The more ordered ripple formation on nanorods can be associated with the confinement of the nanorod facets in comparison with the quasi-infinite surface of the flat substrates. Keywords: cluster ion bombardment; gas cluster ion beam; surface ripples; ZnO nanorods; Introduction The

• ., Ltd.) by means of a two-step hydrothermal (HT) growth process. The first step is the synthesis of a seed layer and the second step is the ZnO nanorod growth. To prepare the seed layer solution we stirred 5 mM Zn(CH3COO)2·2H2O (zinc acetate dehydrate, 99.9%, Sinopharm Chemical Reagent Co., Ltd) in 10

Facile biogenic fabrication of hydroxyapatite nanorods using cuttlefish bone and their bactericidal and biocompatibility study

• Satheeshkumar Balu,
• Manisha Vidyavathy Sundaradoss,
• Swetha Andra and
• Jaison Jeevanandam

Beilstein J. Nanotechnol. 2020, 11, 285–295, doi:10.3762/bjnano.11.21

• functional asymmetric and symmetric PO43− stretching groups, respectively, which helps in the confirmation of the CB-Hap nanorod formation. Earlier reports suggest that there are two classes of carbonate substitutions on Hap, such as A-type, where the carbonates are substituted at the site of O–H vibrations

• analysis Figure 3 shows the thermogravimetric analysis (TGA) of cuttlefish bone and CB-Hap nanorod powder. Both CB and CB-Hap NRs show a similar gradual weight loss of 6% from 38 to 583 °C due to the evaporation of water and organic substances of cuttlefish [32]. A drastic weight loss of 22% was observed

Nonclassical dynamic modeling of nano/microparticles during nanomanipulation processes

• Moharam Habibnejad Korayem,
• Ali Asghar Farid and
• Rouzbeh Nouhi Hefzabad

Beilstein J. Nanotechnol. 2020, 11, 147–166, doi:10.3762/bjnano.11.13

• of the results with other studies” that for a polystyrene nanorod that is softer than gold the same conclusion can not be reached. Table 4 shows the maximum deflections for the analyzed sample. The rotation angle of the modeled cylindrical gold nanoparticle along the nanoparticle length for the four

• studies are presented in Figure 18 and Figure 19 by employing contact mechanics models that are in compliance with other studies. Moradi et al. [8] studied the manipulation dynamics of a cylindrical nanorod made from polystyrene using a classical theory of continuum mechanics. In this section, by

• considering the information employed by Moradi et al. (Table 10), the deflections of a polystyrene nanorod are presented by including the size effects, followed by a comparison between the results. Figure 20 and Table 11 show the deflections of the polystyrene nanorod according to different models with the

Materials nanoarchitectonics at two-dimensional liquid interfaces

• Katsuhiko Ariga,
• Michio Matsumoto,
• Taizo Mori and
• Lok Kumar Shrestha

Beilstein J. Nanotechnol. 2019, 10, 1559–1587, doi:10.3762/bjnano.10.153

• isopropyl alcohol at room temperature (Figure 21). The growth directions and diameters of the nanorod-like C70 one-dimensional structures can be tuned through the washing conditions. Interestingly, the formed nanorod structures possess mesoporous features, which makes the entire structure fully hierarchic

Selective gas detection using Mn₃O₄/WO₃ composites as a sensing layer

• Yongjiao Sun,
• Zhichao Yu,
• Wenda Wang,
• Pengwei Li,
• Gang Li,
• Wendong Zhang,
• Lin Chen,
• Serge Zhuivkov and
• Jie Hu

Beilstein J. Nanotechnol. 2019, 10, 1423–1433, doi:10.3762/bjnano.10.140

• Cr2O3-functionalzied WO3 nanorod sensor had better selectivity toward ethanol than that of pristine WO3 [11]. From previous reports, it is almost certainly clear that catalytic Mn3O4 attached to WO3 should promote the gas sensing reactions, and the Mn3O4/WO3 composite is expected to be a more effective

Janus-micromotor-based on–off luminescence sensor for active TNT detection

• Ye Yuan,
• Changyong Gao,
• Daolin Wang,
• Chang Zhou,
• Baohua Zhu and
• Qiang He

Beilstein J. Nanotechnol. 2019, 10, 1324–1331, doi:10.3762/bjnano.10.131

• ][17][18][19][20]. Based on the concept of nanoarchitectonics [21][22], various kinds of micro/nanomotors have been fabricated, such as Janus capsule micromotors [23], tubular micromotors [24], helical nanomotors [25], nanowire motors [26], and nanorod motors [27]. Unlike inert particles that move by

Green fabrication of lanthanide-doped hydroxide-based phosphors: Y(OH)₃:Eu³⁺ nanoparticles for white light generation

• Tugrul Guner,
• Anilcan Kus,
• Mehmet Ozcan,
• Aziz Genc,
• Hasan Sahin and
• Mustafa M. Demir

Beilstein J. Nanotechnol. 2019, 10, 1200–1210, doi:10.3762/bjnano.10.119

• media may be responsible for this rapid growth. Extending the reaction time to 15 min, the crystals grow into larger structures and rod-like structures appear in the form of nanorod bundles, probably due to crystal splitting. For 60 min of reaction time, rod-like structures transform into rice-like

Polydopamine-coated Au nanorods for targeted fluorescent cell imaging and photothermal therapy

• Boris N. Khlebtsov,
• Andrey M. Burov,
• Timofey E. Pylaev and
• Nikolai G. Khlebtsov

Beilstein J. Nanotechnol. 2019, 10, 794–803, doi:10.3762/bjnano.10.79

• efficient multimodal cancer treatments both in vitro and in vivo. An ideal nanorod coating for efficient nanocomposite formation should meet several important criteria. First, the resulting nanoparticles should be nontoxic and colloidally stable in blood serum. Second, the shell should have high loading

• with a concentration of 1012 mL−1 (a detailed calculation of nanorod concentration is given in Supporting Information File 1) with 1 mL of 3,4-dihydroxyphenethylamine (dopamine hydrochloride, DA) solution with a concentration of 1 mg/mL. As a result, nanorods were coated with a rough polymer shell

Deposition of metal particles onto semiconductor nanorods using an ionic liquid

• Michael D. Ballentine,
• Elizabeth G. Embry,
• Marco A. Garcia and
• Lawrence J. Hill

Beilstein J. Nanotechnol. 2019, 10, 718–724, doi:10.3762/bjnano.10.71

• Michael D. Ballentine Elizabeth G. Embry Marco A. Garcia Lawrence J. Hill 1906 College Heights Blvd., Western Kentucky University, Bowling Green, KY, 42101, USA 10.3762/bjnano.10.71 Abstract The current study investigates whether metal deposition onto an existing nanorod can be carried out using

• using the methods reported here. Keywords: catalyst; ionic liquid; methylene blue; platinum; semiconductor nanorod; Introduction Core@shell semiconductor nanorods with attached noble metal particles have been widely studied as photocatalysts, and any improvement on the synthesis of these materials has

• potential to impact a number of applications [1][2][3][4]. Deposition of metal nanoparticles onto the nanorod surface competes with homogeneous nucleation of the metal nanoparticles, with the size and number of metal nanoparticles attached to each nanorod controlled by lattice matching of the materials and

Self-assembly and wetting properties of gold nanorod–CTAB molecules on HOPG

• Imtiaz Ahmad,
• Floor Derkink,
• Tim Boulogne,
• Pantelis Bampoulis,
• Harold J. W. Zandvliet,
• Hidayat Ullah Khan,
• Rahim Jan and
• E. Stefan Kooij

Beilstein J. Nanotechnol. 2019, 10, 696–705, doi:10.3762/bjnano.10.69

• surface. The self-assembled layers of CTAB molecules on the HOPG terraces prior to nanorod deposition were shown to change the wettability of the surface, and as a result, gold nanorod deposition takes place on nonwetting HOPG terraces. Keywords: CTAB; gold nanorods; micelles; self-assembly; wettability

• . However, Figure 1A–C displays a montage of SEM images that shows monolayer nanorod deposits on the HOPG terraces, analogous to the results reported previously [51]. Since this work was more focused on the deposition and alignment of the nanorods near the step edges (comparable to the observation

• illustrated in Figure 1C,D), deposition on the nonwetting HOPG terraces could not be explained. In the sections that follow, our focus in this work will be on the HOPG terraces. Here we will highlight the nanorod deposition on the HOPG terraces that is assisted by hidden features (in SEM images) of the self

Advanced scanning probe lithography using anatase-to-rutile transition to create localized TiO₂ nanorods

• Julian Kalb,
• Vanessa Knittel and
• Lukas Schmidt-Mende

Beilstein J. Nanotechnol. 2019, 10, 412–418, doi:10.3762/bjnano.10.40

• contrast, local light scattering, high-resolution surface roughness gradients or microchannels. This set of extensions for rutile TiO2 nanorod applications is a valuable toolkit for lab-on-a-chip devices [33][34][35]. Recently, we investigated the influence of rutile seed layers on the growth and shape of

• directly on polycrystalline anatase TiO2 films. The resulting nanorod arrangements are compared with similar structures obtained with conventional electron-beam lithography, which is a more expensive and laborious procedure. The method is drafted in Figure 1. A silicon tip, as it is used in a conventional

• of the written line is covered with nanorods completely. The average size and shape of the nanorods is given by the parameters of the growth solution and growth process and does not depend on the writing process. Figure 4D shows that light scattering is enhanced by the TiO2 nanorod lines locally

Uniform Sb₂S₃ optical coatings by chemical spray method

• Jako S. Eensalu,
• Atanas Katerski,
• Erki Kärber,
• Ilona Oja Acik,
• Arvo Mere and
• Malle Krunks

Beilstein J. Nanotechnol. 2019, 10, 198–210, doi:10.3762/bjnano.10.18

• two-step process on ZnO nanorod/TiO2 substrates [7]. In this study, we applied this two-step process, i.e., depositing amorphous Sb2S3 layers on planar substrates, followed by post-deposition crystallization. The aim of this study was to produce crystalline, continuous, Sb2S3 optical coatings with

Surface plasmon resonance enhancement of photoluminescence intensity and bioimaging application of gold nanorod@CdSe/ZnS quantum dots

• Siyi Hu,
• Yu Ren,
• Yue Wang,
• Jinhua Li,
• Junle Qu,
• Liwei Liu,
• Hanbin Ma and
• Yuguo Tang

Beilstein J. Nanotechnol. 2019, 10, 22–31, doi:10.3762/bjnano.10.3

Controlling surface morphology and sensitivity of granular and porous silver films for surface-enhanced Raman scattering, SERS

• Sherif Okeil and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2018, 9, 2813–2831, doi:10.3762/bjnano.9.263

• ][27][28][29][30][31][32][33][34]. Additional methods appeared in which nanoparticles or metal films are deposited on structured substrates as carbon nanotubes [35][36][37][38][39], graphene foam [40], nanorod or nanopillar arrays [41][42], biological scaffolds [43][44], black silicon [45][46

• ], anisotropically etched single-crystal silicon [47], plasma-treated plastic [48] and anodic aluminum oxide films [49][50][51][52]. Some methods aim at the fabrication of three -dimensional silver or gold structures, such as oblique-angle vapor deposition used for the fabrication of silver nanorod arrays [53][54