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Search for "chemical synthesis" in Full Text gives 79 result(s) in Beilstein Journal of Nanotechnology.

Evolution of Ag nanostructures created from thin films: UV–vis absorption and its theoretical predictions

  • Robert Kozioł,
  • Marcin Łapiński,
  • Paweł Syty,
  • Damian Koszelow,
  • Wojciech Sadowski,
  • Józef E. Sienkiewicz and
  • Barbara Kościelska

Beilstein J. Nanotechnol. 2020, 11, 494–507, doi:10.3762/bjnano.11.40

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  • . However, in the case of very simple production methods, as wet chemical synthesis or dewetting, the size of the nanoparticles follows a Gaussian distribution. This work focusses on Ag-based plasmonic platforms manufactured by thermal annealing of thin metallic films. The experimental results are
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Published 25 Mar 2020

Label-free highly sensitive probe detection with novel hierarchical SERS substrates fabricated by nanoindentation and chemical reaction methods

  • Jingran Zhang,
  • Tianqi Jia,
  • Yongda Yan,
  • Li Wang,
  • Peng Miao,
  • Yimin Han,
  • Xinming Zhang,
  • Guangfeng Shi,
  • Yanquan Geng,
  • Zhankun Weng,
  • Daniel Laipple and
  • Zuobin Wang

Beilstein J. Nanotechnol. 2019, 10, 2483–2496, doi:10.3762/bjnano.10.239

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  • nanoparticles or micro/nanostructures can be applied as a SERS sensor to detect adsorbed markers. Generally, nanoparticles can be fabricated as SERS substrates at low cost and high production via chemical synthesis methods [8][9][10][11][12][13], including chemical/electrochemical deposition and electrochemical
  • thickness. However, nanoparticles fabricated by the chemical synthesis method have poor reproducibility and uneven density, and the hot spot position is difficult to accurately determine. Recently, many nanostructure shapes have been fabricated for use as SERS substrates including nanorods [14][15][16
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Published 13 Dec 2019

Biocatalytic oligomerization-induced self-assembly of crystalline cellulose oligomers into nanoribbon networks assisted by organic solvents

  • Yuuki Hata,
  • Yuka Fukaya,
  • Toshiki Sawada,
  • Masahito Nishiura and
  • Takeshi Serizawa

Beilstein J. Nanotechnol. 2019, 10, 1778–1788, doi:10.3762/bjnano.10.173

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  • robust assemblies, whereas the construction of self-assembled materials from such molecules is generally difficult due to their complicated chemical synthesis and low solubility in solvents. Enzyme-catalyzed oligomerization-induced self-assembly has been shown to be promising for creating
  • of their assemblies in terms of physicochemical stability and mechanical properties [19][20]. Plausible reasons are their complicated chemical synthesis [21] and low solubility in solvents [22][23], which prevent crystalline poly- and oligosaccharides from undergoing controlled self-assembly into
  • building blocks has the potential to open new horizons in nanoarchitectonics. Oligomerization-induced self-assembly is a promising method for overcoming the above issues (i.e., the complicated chemical synthesis and the low solubility in solvents) with crystalline oligosaccharide nanoarchitectonics [21][27
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Published 26 Aug 2019

Synthesis of nickel/gallium nanoalloys using a dual-source approach in 1-alkyl-3-methylimidazole ionic liquids

  • Ilka Simon,
  • Julius Hornung,
  • Juri Barthel,
  • Jörg Thomas,
  • Maik Finze,
  • Roland A. Fischer and
  • Christoph Janiak

Beilstein J. Nanotechnol. 2019, 10, 1754–1767, doi:10.3762/bjnano.10.171

Graphical Abstract
  • conversion values. IL-free, precipitated NiGa nanoparticles achieve conversion values of over 90% and selectivity of 100% towards alkene over three runs. Keywords: ionic liquids; microwave decomposition; nickel/gallium nanoparticles; semihydrogenation catalysis; soft wet-chemical synthesis; Introduction
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Published 21 Aug 2019

Energy distribution in an ensemble of nanoparticles and its consequences

  • Dieter Vollath

Beilstein J. Nanotechnol. 2019, 10, 1452–1457, doi:10.3762/bjnano.10.143

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  • selected. One realizes a relatively wide temperature range in the case of the smaller 2 nm particles, whereas this temperature range is very narrow for the 5 nm particles. However, this does not represent experimental reality. As a product of chemical synthesis, one obtains a more or less broad particle
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Published 19 Jul 2019

Fabrication of silver nanoisland films by pulsed laser deposition for surface-enhanced Raman spectroscopy

  • Bogusław Budner,
  • Mariusz Kuźma,
  • Barbara Nasiłowska,
  • Bartosz Bartosewicz,
  • Malwina Liszewska and
  • Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2019, 10, 882–893, doi:10.3762/bjnano.10.89

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  • nanoparticle films [12][13][14]. Metallic NPs of different sizes and shapes are prepared in solution mainly by chemical synthesis using various reducing agents and conditions [13]. However, physical methods such as laser ablation are also often used [15]. Other examples of nanoparticle fabrication using
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Published 16 Apr 2019

Sub-wavelength waveguide properties of 1D and surface-functionalized SnO2 nanostructures of various morphologies

  • Venkataramana Bonu,
  • Binaya Kumar Sahu,
  • Arindam Das,
  • Sankarakumar Amirthapandian,
  • Sandip Dhara and
  • Harish C. Barshilia

Beilstein J. Nanotechnol. 2019, 10, 379–388, doi:10.3762/bjnano.10.37

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  • this context, there have been attempts to understand the relevant thermodynamic aspects and to evaluate the impact of parameters like temperature, pressure, and precursor concentration in the growth process [8][20][21]. Apart from different approaches for wet chemical synthesis [22] of SnO2 NSs, the
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Published 07 Feb 2019

Heating ability of magnetic nanoparticles with cubic and combined anisotropy

  • Nikolai A. Usov,
  • Mikhail S. Nesmeyanov,
  • Elizaveta M. Gubanova and
  • Natalia B. Epshtein

Beilstein J. Nanotechnol. 2019, 10, 305–314, doi:10.3762/bjnano.10.29

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  • , different methods of chemical synthesis of iron oxide nanoparticles give particles of various characteristic diameters [3] that are usually far from the optimal theoretical values. Another important issue is the nature of the magnetic anisotropy of individual nanoparticles of the assembly. Are the magnetic
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Published 29 Jan 2019

Wet chemistry route for the decoration of carbon nanotubes with iron oxide nanoparticles for gas sensing

  • Hussam M. Elnabawy,
  • Juan Casanova-Chafer,
  • Badawi Anis,
  • Mostafa Fedawy,
  • Mattia Scardamaglia,
  • Carla Bittencourt,
  • Ahmed S. G. Khalil,
  • Eduard Llobet and
  • Xavier Vilanova

Beilstein J. Nanotechnol. 2019, 10, 105–118, doi:10.3762/bjnano.10.10

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  • Institution for Research and Advanced Studies (ICREA) via the ICREA Academia Award. MS is a FRS Postdoctoral Researcher, CB is Research Associate at the FRS-FNRS. Authors Contributions The chemical synthesis for the CNT decoration was performed by H. M. Elnabawy under the supervision of B. Anis, M. Fedawy
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Published 09 Jan 2019

Threshold voltage decrease in a thermotropic nematic liquid crystal doped with graphene oxide flakes

  • Mateusz Mrukiewicz,
  • Krystian Kowiorski,
  • Paweł Perkowski,
  • Rafał Mazur and
  • Małgorzata Djas

Beilstein J. Nanotechnol. 2019, 10, 71–78, doi:10.3762/bjnano.10.7

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  • Mateusz Mrukiewicz Krystian Kowiorski Pawel Perkowski Rafal Mazur Malgorzata Djas Institute of Applied Physics, Military University of Technology, 00-908 Warsaw, Poland Department of Chemical Synthesis and Flake Graphene, Institute of Electronic Materials Technology, 01-919 Warsaw, Poland 10.3762
  • Chemical Synthesis and Flake Graphene, Institute of Electronic Materials Technology, Warsaw, Poland. Then, the GO flakes in water were transferred by solvent exchange into isopropanol (IPA) and were sonicated to achieve a stable GO-IPA suspension of a known concentration. The structure of the flakes was
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Published 07 Jan 2019

Size-selected Fe3O4–Au hybrid nanoparticles for improved magnetism-based theranostics

  • Maria V. Efremova,
  • Yulia A. Nalench,
  • Eirini Myrovali,
  • Anastasiia S. Garanina,
  • Ivan S. Grebennikov,
  • Polina K. Gifer,
  • Maxim A. Abakumov,
  • Marina Spasova,
  • Makis Angelakeris,
  • Alexander G. Savchenko,
  • Michael Farle,
  • Natalia L. Klyachko,
  • Alexander G. Majouga and
  • Ulf Wiedwald

Beilstein J. Nanotechnol. 2018, 9, 2684–2699, doi:10.3762/bjnano.9.251

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  • diameters of 6–44 nm (Fe3O4) and 3–11 nm (Au) were prepared by high temperature, wet chemical synthesis. High-quality Fe3O4 nanocrystals with bulk-like magnetic behavior were obtained as confirmed by the presence of the Verwey transition. The 25 nm diameter Fe3O4–Au hybrid nanomaterial sample (in aqueous
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Published 16 Oct 2018

Enhanced antineoplastic/therapeutic efficacy using 5-fluorouracil-loaded calcium phosphate nanoparticles

  • Shanid Mohiyuddin,
  • Saba Naqvi and
  • Gopinath Packirisamy

Beilstein J. Nanotechnol. 2018, 9, 2499–2515, doi:10.3762/bjnano.9.233

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  • , while aqueous-dissolved 5-FU comprises a dispersed phase. The calculated drug loading efficiency of 5-FU in CaP nanoparticles was 64%, which represents an improved drug encapsulation efficiency. The final yield of the chemical synthesis was found to be 10 mg/100 mL. UV–visible spectroscopic studies The
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Published 20 Sep 2018

Synthesis of rare-earth metal and rare-earth metal-fluoride nanoparticles in ionic liquids and propylene carbonate

  • Marvin Siebels,
  • Lukas Mai,
  • Laura Schmolke,
  • Kai Schütte,
  • Juri Barthel,
  • Junpei Yue,
  • Jörg Thomas,
  • Bernd M. Smarsly,
  • Anjana Devi,
  • Roland A. Fischer and
  • Christoph Janiak

Beilstein J. Nanotechnol. 2018, 9, 1881–1894, doi:10.3762/bjnano.9.180

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  • diameters of (1.5 ± 0.5) to (5 ± 1) nm. The characterization was completed by energy-dispersive X-ray spectroscopy (EDX). Keywords: ionic liquids; metal amidinates; rare-earth metal-fluoride nanoparticles; rare-earth metal nanoparticles; soft wet-chemical synthesis; Introduction Rare-earth (RE) elements
  • -methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIm][NTf2]) or propylene carbonate (PC) as reaction media RE-NPs were produced. This is an unusual and quite interesting result that we wish to highlight at this point. There exist only few reports on the wet-chemical synthesis of nanoparticles of rare-earth
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Published 28 Jun 2018

Cr(VI) remediation from aqueous environment through modified-TiO2-mediated photocatalytic reduction

  • Rashmi Acharya,
  • Brundabana Naik and
  • Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 1448–1470, doi:10.3762/bjnano.9.137

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  • transformation for the fine chemical synthesis [39][40][41][42] and (v) photodegradation of pollutants [43][44][45][46][47][48][49]. Semiconductor-based photocatalysis proceeds through following three steps: (1) absorption of light; (2) separation and transport of charge carriers; and (3) redox reactions on the
  • chemical synthesis Photocatalytic, selective, organic transformations are currently preferred over the conventional processes for synthesis of fine chemicals basically due to two reasons. The first one is to restrict the use of environmentally detrimental chemical reagents such as heavy metal catalysts
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Published 16 May 2018

Review on nanoparticles and nanostructured materials: history, sources, toxicity and regulations

  • Jaison Jeevanandam,
  • Ahmed Barhoum,
  • Yen S. Chan,
  • Alain Dufresne and
  • Michael K. Danquah

Beilstein J. Nanotechnol. 2018, 9, 1050–1074, doi:10.3762/bjnano.9.98

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  • useful in a nanomedicine application as they were found to reduce potential cellular toxicity [152]. However, the major drawbacks of these NPs are that they require more time for synthesis, are difficult to filter, and produce a low yield of NPs, as compared to chemical synthesis [153]. Novel nano
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Published 03 Apr 2018

The rational design of a Au(I) precursor for focused electron beam induced deposition

  • Ali Marashdeh,
  • Thiadrik Tiesma,
  • Niels J. C. van Velzen,
  • Sjoerd Harder,
  • Remco W. A. Havenith,
  • Jeff T. M. De Hosson and
  • Willem F. van Dorp

Beilstein J. Nanotechnol. 2017, 8, 2753–2765, doi:10.3762/bjnano.8.274

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  • , University of Ghent, B-9000 Ghent, Belgium Uniresearch B.V., 2628 XG Delft, Netherlands 10.3762/bjnano.8.274 Abstract Au(I) complexes are studied as precursors for focused electron beam induced processing (FEBIP). FEBIP is an advanced direct-write technique for nanometer-scale chemical synthesis. The
  • ; Introduction Electron microscopes, typically used for imaging and analysis, can be turned into a platform for nanoscale chemical synthesis using electron beam induced chemistry. The electron beam can act as a pen or an eraser on any solid sample, using a technique called focused electron beam induced
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Published 20 Dec 2017

Synthesis of metal-fluoride nanoparticles supported on thermally reduced graphite oxide

  • Alexa Schmitz,
  • Kai Schütte,
  • Vesko Ilievski,
  • Juri Barthel,
  • Laura Burk,
  • Rolf Mülhaupt,
  • Junpei Yue,
  • Bernd Smarsly and
  • Christoph Janiak

Beilstein J. Nanotechnol. 2017, 8, 2474–2483, doi:10.3762/bjnano.8.247

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  • constant, ILs are an ideal media for microwave reactions and for the stabilization of M-NPs [34][35][36][37]. Soft wet-chemical synthesis in organic solvents from metal-organic complexes is an essential method to obtain metal or metal alloy nanoparticles [38][39][40][41][42][43][44][45][46][47][48][49][50
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Published 22 Nov 2017

Calcium fluoride based multifunctional nanoparticles for multimodal imaging

  • Marion Straßer,
  • Joachim H. X. Schrauth,
  • Sofia Dembski,
  • Daniel Haddad,
  • Bernd Ahrens,
  • Stefan Schweizer,
  • Bastian Christ,
  • Alevtina Cubukova,
  • Marco Metzger,
  • Heike Walles,
  • Peter M. Jakob and
  • Gerhard Sextl

Beilstein J. Nanotechnol. 2017, 8, 1484–1493, doi:10.3762/bjnano.8.148

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  • on synthesis and characterization of multifunctional NPs based on CaF2. These NPs are produced by wet-chemical synthesis and doped with multiple ions leading to paramagnetism and fluorescence, making them suitable for T1-weighted MRI and PL microscopy. The characterization of the resulting NPs is
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Published 18 Jul 2017

Charge transport in organic nanocrystal diodes based on rolled-up robust nanomembrane contacts

  • Vineeth Kumar Bandari,
  • Lakshmi Varadharajan,
  • Longqian Xu,
  • Abdur Rehman Jalil,
  • Mirunalini Devarajulu,
  • Pablo F. Siles,
  • Feng Zhu and
  • Oliver G. Schmidt

Beilstein J. Nanotechnol. 2017, 8, 1277–1282, doi:10.3762/bjnano.8.129

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  • optoelectronics and spintronics [4][5][6]. Organic nanocrystals have drawn much attention in the community because high quality material can be efficiently generated by controlling the nanoscale physical growth and/or chemical synthesis process [7][8][9][10]. The deposition of organic conjugated molecules is
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Published 19 Jun 2017

Enhanced catalytic activity without the use of an external light source using microwave-synthesized CuO nanopetals

  • Govinda Lakhotiya,
  • Sonal Bajaj,
  • Arpan Kumar Nayak,
  • Debabrata Pradhan,
  • Pradip Tekade and
  • Abhimanyu Rana

Beilstein J. Nanotechnol. 2017, 8, 1167–1173, doi:10.3762/bjnano.8.118

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  • , University of Twente, 7500 AE, Enschede, Netherlands 10.3762/bjnano.8.118 Abstract We report enhanced catalytic activity of CuO nanopetals synthesized by microwave-assisted wet chemical synthesis. The catalytic reaction of CuO nanopetals and H2O2 was studied with the application of external light source and
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Published 30 May 2017

Optical response of heterogeneous polymer layers containing silver nanostructures

  • Miriam Carlberg,
  • Florent Pourcin,
  • Olivier Margeat,
  • Judikaël Le Rouzo,
  • Gérard Berginc,
  • Rose-Marie Sauvage,
  • Jörg Ackermann and
  • Ludovic Escoubas

Beilstein J. Nanotechnol. 2017, 8, 1065–1072, doi:10.3762/bjnano.8.108

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  • properties. Thin film layers with inclusions of differently shaped nanoparticles, such as nanospheres and nanoprisms, and of different sizes, are optically characterized. The nanoparticles are produced by a simple chemical synthesis at room temperature in water. The plasmonic resonance peaks of the different
  • visible wavelength range [15]. Progress in the chemistry of NP synthesis allowed us to choose a chemical process adapted to our study that produces NPs of different shapes and sizes. Among different NP production methods, chemical synthesis is easy to implement and produces NPs at low cost. Standard
  • physical vapor deposition methods require high energy sources, such as lasers [16], whereas chemical synthesis produces, among other shapes, nanospheres and nanoprisms of different sizes in water at room temperature. Taking advantage of the size and shape versatility of this chemical synthesis, we aim to
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Published 16 May 2017

Synthesis of graphene–transition metal oxide hybrid nanoparticles and their application in various fields

  • Arpita Jana,
  • Elke Scheer and
  • Sebastian Polarz

Beilstein J. Nanotechnol. 2017, 8, 688–714, doi:10.3762/bjnano.8.74

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Published 24 Mar 2017

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

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  • colloidal CdS nanoparticles (NPs) by a sono-chemical synthesis using BSA as a biotemplate [24][25][26]. BSA can construct surface functionalized colloidal CdS QDs with modified optical properties as compared to its bulk form. This can further be employed to render stable dispersion of CdS NPs without
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Published 23 Jan 2017

Functionalized platinum nanoparticles with surface charge trigged by pH: synthesis, characterization and stability studies

  • Giovanna Testa,
  • Laura Fontana,
  • Iole Venditti and
  • Ilaria Fratoddi

Beilstein J. Nanotechnol. 2016, 7, 1822–1828, doi:10.3762/bjnano.7.175

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  • stabilizer to protect the platinum nanoparticles [18]. However, an efficient separation of the colloid from solution could be difficult to reach [19]. Among the synthetic approaches, wet chemical synthesis offers the opportunity to introduce a selected functionalization onto the NP surface and generally give
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Published 24 Nov 2016

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

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  • nanostructures. Keywords: catalytic properties; chemical synthesis; nanostructures; semiconductors; transmission electron microscopy (TEM); Introduction In the past decade, there has been an increased interest in the photocatalytic degradation of various kinds of organic pollutants in water and soil [1]. Many
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Published 11 Nov 2016
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