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Sundarapandi M, Shanmugam S, Ramaraj R. Synthesis of Different Nano‐layer Shells (Mono‐, Bi‐, and Alloy Layers)‐Coated Gold Spherical Nanoparticles Core for Catalysis. ChemistrySelect 2023. [DOI: 10.1002/slct.202203389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Affiliation(s)
- Manickam Sundarapandi
- School of Chemistry, Centre for Photoelectrochemistry Madurai Kamaraj University Madurai 625021 India
| | - Sivakumar Shanmugam
- Department of Organic Chemistry, School of Chemistry Madurai Kamaraj University Madurai 625021 India
| | - Ramasamy Ramaraj
- School of Chemistry, Centre for Photoelectrochemistry Madurai Kamaraj University Madurai 625021 India
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2
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Su PG, Tsai MS, Lu CJ. Fabrication of noble metal (Au, Ag, Pt)/polythiophene/reduced graphene oxide ternary nanocomposites for NH 3 gas sensing at room temperature. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:4113-4121. [PMID: 36214083 DOI: 10.1039/d2ay01317g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Room temperature NH3 gas sensors composed of noble metal (Au, Ag or Pt)/polythiophene/reduced graphene oxide (Au, Ag or Pt/PTh/rGO) ternary nanocomposite films were fabricated using a simple one-pot redox reaction. The surface morphology and composition of Au, Ag or Pt/PTh/rGO ternary nanocomposite films were analyzed using Fourier transform infrared spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). Compared with Ag/PTh/rGO and Pt/PTh/rGO ternary nanocomposite films, obviously bright Au nanoparticles were observed on the surface of the massive lamination PTh film which wrapped the rGO, and encapsulated Au nanoparticles were observed in the Au/PTh/rGO film. Comparative gas sensing results showed that the Au/PTh/rGO ternary nanocomposite film had the highest response compared with Ag/PTh/rGO and Pt/PTh/rGO ternary nanocomposite films at room temperature, especially when the testing concentration of NH3 gas was below 5 ppm. The Au/PTh/rGO ternary nanocomposite film also had a fast response time and good reproducibility. The combination of the high catalytic activity of naked Au nanoparticles and the formation of effective carrier transfer channels by encapsulated Au nanoparticles was responsible for the improved response of the Au/PTh/rGO ternary nanocomposite film.
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Affiliation(s)
- Pi-Guey Su
- Department of Chemistry, Chinese Culture University, Taipei 111, Taiwan.
| | - Meng-Shian Tsai
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
| | - Chia-Jung Lu
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
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3
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Saha P, Akter R, Shah SS, Mahfoz W, Aziz MA, Ahammad AJS. Gold Nanomaterials and their Composites as Electrochemical Sensing Platforms for Nitrite Detection. Chem Asian J 2022; 17:e202200823. [PMID: 36039466 DOI: 10.1002/asia.202200823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/29/2022] [Indexed: 02/01/2023]
Abstract
Nitrite is one of the abundant toxic components existing in the environment and is likely to have a great potential to affect human health badly. For that reason, it has become crucial to build a reliable nitrite detection method. In recent years, several nitrite monitoring systems have been proposed. Compared with traditional analytical strategies, the electrochemical approach has a bunch of advantages, including low cost, rapid response, easy operation, simplicity, etc. In this case, noble metal nanomaterials, especially Au-based nanomaterials, have attracted attention in electrode modification because of higher catalytic activity, facile mass transfer, and broad active area for determining nitrite. This review is based on the state-of-the-art, which includes a variety of nanomaterials that have been coupled with AuNPs for the creation of nanocomposites, and the construction as well as development of electrochemical sensors for nitrite detection over the last few years (2016-2022). A background study on synthesizing different morphological AuNPs and nanocomposites has also been introduced. The fabrication methods and sensing capabilities of modified electrodes are given special consideration.
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Affiliation(s)
- Protity Saha
- Jagannath University, Chemistry, Department of Chemistry, 1100, BANGLADESH
| | - Riva Akter
- Jagannath University, Chemistry, Department of Chemistry, 1100, BANGLADESH
| | - Syed Shaheen Shah
- King Fahd University of Petroleum & Minerals, Physics Department, Building 6, 31261, Dhahran, SAUDI ARABIA
| | - Wael Mahfoz
- King Fahd University of Petroleum & Minerals, Chemistry, Chemistry Department, 31261, Dhahran, SAUDI ARABIA
| | - Md Abdul Aziz
- King Fahd University of Petroleum & Minerals, Center of Research excellence in Nanotechnology, KFUPM Box # 81, 31261, Dhahran, SAUDI ARABIA
| | - A J Saleh Ahammad
- Jagannath University, Chemistry, Department of Chemistry, 1100, BANGLADESH
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Nagai D, Isobe N, Inoue T, Okamoto S, Maki Y, Yamanobe T. Preparation of Various Nanomaterials via Controlled Gelation of a Hydrophilic Polymer Bearing Metal-Coordination Units with Metal Ions. Gels 2022; 8:gels8070435. [PMID: 35877520 PMCID: PMC9322127 DOI: 10.3390/gels8070435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/28/2022] [Accepted: 07/08/2022] [Indexed: 02/04/2023] Open
Abstract
We investigated the gelation of a hydrophilic polymer with metal-coordination units (HPMC) and metal ions (PdII or AuIII). Gelation proceeded by addition of an HPMC solution in N-methyl-2-pyrrolidone (NMP) to a metal ion aqueous solution. An increase in the composition ratio of the metal-coordination units from 10 mol% to 34 mol% (HPMC-34) increased the cross-linking rate with AuIII. Cross-linking immediately occurred after dropwise addition of an HPMC-34 solution to the AuIII solution, generating the separation between the phases of HPMC-34 and AuIII. The cross-linking of AuIII proceeded from the surface to the inside of the HPMC-34 droplets, affording spherical gels. In contrast, a decrease in the ratio of metal-coordination units from 10 mol% to 4 mol% (HPMC-4) decreased the PdII cross-linking rate. The cross-linking occurred gradually and the gels extended to the bottom of the vessel, forming fibrous gels. On the basis of the mechanism for the formation of gels with different morphologies, the gelation of HPMC-34 and AuIII provided nanosheets via gelation at the interface between the AuIII solution and the HPMC-34 solution. The gelation of HPMC-4 and PdII afforded nanofibers by a facile method, i.e., dropwise addition of the HPMC-4 solution to the PdII solution. These results demonstrated that changing the composition ratio of the metal-coordination units in HPMC can control the gelation behavior, resulting in different types of nanomaterials.
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Affiliation(s)
- Daisuke Nagai
- School of Food and Nutritional Science, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Shizuoka, Japan; (N.I.); (S.O.)
- Correspondence: ; Tel.: +81-54-264-5729
| | - Naoki Isobe
- School of Food and Nutritional Science, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Shizuoka, Japan; (N.I.); (S.O.)
| | - Tatsushi Inoue
- Division of Molecular Science, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Gunma, Japan; (T.I.); (T.Y.)
| | - Shusuke Okamoto
- School of Food and Nutritional Science, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Shizuoka, Japan; (N.I.); (S.O.)
| | - Yasuyuki Maki
- Department of Chemistry, Graduate School of Science, Kyusyu University, 744 Motooka, Fukuoka 819-0395, Fukuoka, Japan;
| | - Takeshi Yamanobe
- Division of Molecular Science, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Gunma, Japan; (T.I.); (T.Y.)
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5
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Alamgholiloo H, Rostamnia S, Pesyan NN. Anchoring and stabilization of colloidal PdNPs on exfoliated bis-thiourea modified graphene oxide layers with super catalytic activity in water and PEG. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125130] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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6
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Shanmugaraj K, Bustamante TM, Campos CH, Torres CC. Liquid Phase Hydrogenation of Pharmaceutical Interest Nitroarenes over Gold-Supported Alumina Nanowires Catalysts. MATERIALS 2020; 13:ma13040925. [PMID: 32093015 PMCID: PMC7078662 DOI: 10.3390/ma13040925] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/23/2020] [Accepted: 02/10/2020] [Indexed: 11/16/2022]
Abstract
In this work, Au nanoparticles, supported in Al2O3 nanowires (ANW) modified with (3-aminopropyl)trimethoxysilane were synthetized, for their use as catalysts in the hydrogenation reaction of 4-(2-fluoro-4-nitrophenyl)-morpholine and 4-(4-nitrophenyl)morpholin-3-one. ANW was obtained by hydrothermal techniques and the metal was incorporated by the reduction of the precursor with NaBH4 posterior to superficial modification. The catalysts were prepared at different metal loadings and were characterized by different techniques. The characterization revealed structured materials in the form of nanowires and a successful superficial modification. All catalysts show that Au is in a reduced state and the shape of the nanoparticles is spherical, with high metal dispersion and size distributions from 3.7 to 4.6 nm. The different systems supported in modified-ANW were active and selective in the hydrogenation reaction of both substrates, finding for all catalytic systems a selectivity of almost 100% to the aromatic amine. Catalytic data showed pseudo first-order kinetics with respect to the substrate for all experimental conditions used in this work. The solvent plays an important role in the activity and selectivity of the catalyst, where the highest efficiency and operational stability was achieved when ethanol was used as the solvent.
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Affiliation(s)
- Krishnamoorthy Shanmugaraj
- Departamento de Físico-Química, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile; (K.S.); (T.M.B.); (C.H.C.)
| | - Tatiana M. Bustamante
- Departamento de Físico-Química, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile; (K.S.); (T.M.B.); (C.H.C.)
| | - Cristian H. Campos
- Departamento de Físico-Química, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile; (K.S.); (T.M.B.); (C.H.C.)
| | - Cecilia C. Torres
- Departamento de Química, Facultad de Ciencias Exactas, Universidad Andres Bello, Sede Concepción, Autopista Concepción-Talcahuano 7100, Talcahuano 4300866, Chile
- Correspondence: ; Tel.: +56-41-2662151
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7
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A sensitive electrochemical genosensor for highly specific detection of thalassemia gene. Biosens Bioelectron 2019; 129:182-188. [DOI: 10.1016/j.bios.2019.01.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 01/12/2023]
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8
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Cohen S, Bilyachenko AN, Gelman D. Bifunctional Pincer Catalysts for Chemoselective Transfer Hydrogenation and Related Reactions. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801486] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shirel Cohen
- Institute of Chemistry, Edmond J. Safra Campus The Hebrew University of Jerusalem 91904 Jerusalem Israel
| | - Alexey N. Bilyachenko
- Peoples' Friendship University of Russia (RUDN University) Miklukho‐Maklay St., 6 117198 Moscow Russia
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Street 28 119991 Moscow Russia
| | - Dmitri Gelman
- Institute of Chemistry, Edmond J. Safra Campus The Hebrew University of Jerusalem 91904 Jerusalem Israel
- Peoples' Friendship University of Russia (RUDN University) Miklukho‐Maklay St., 6 117198 Moscow Russia
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9
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Kalita GD, Sarmah PP, Saikia PK, Saikia L, Das P. Selective hydrogenation of nitroarenes to amines by ligand-assisted Pd nanoparticles: influence of donor ligands on catalytic activity. NEW J CHEM 2019. [DOI: 10.1039/c8nj05932b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A simple and facile approach for the synthesis of tunable ligand-assisted Pd nanoparticles for selective hydrogenation of nitroarenes.
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Affiliation(s)
| | | | - Pallab Kr. Saikia
- Materials Sciences and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat
- India
| | - Lakshi Saikia
- Materials Sciences and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat
- India
| | - Pankaj Das
- Department of Chemistry
- Dibrugarh University
- Dibrugarh
- India
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10
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Sundarapandi M, Viswanathan P, Sivakumar S, Ramaraj R. Catalytic Activities of Mono- and Bimetallic (Gold/Silver) Nanoshell-Coated Gold Nanocubes toward Catalytic Reduction of Nitroaromatics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13897-13904. [PMID: 30365894 DOI: 10.1021/acs.langmuir.8b02096] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A new class of core-shell metallic nanostructures with tunable near-surface composition and surface morphology with excellent catalytic activity is reported. Very thin shells of metal nanoassemblies such as monolayer (Ag and Au), bilayer of Ag or Au, and AgAu alloy layer with controlled size and morphology were deposited onto a gold nanocube (AuNC) core. UV-vis absorption spectroscopy and high-resolution transmission electron microscopy analyses along with selected-area electron diffraction, energy dispersive X-ray spectroscopy, inductively coupled plasma mass spectrometer, and X-ray diffraction techniques were used to characterize the prepared core-shell nanocubes. High-angle annular dark field scanning transmission electron microscopy-energy dispersive X-ray spectroscopy mapping images were recorded for the bilayer shell and alloy layer shell in the core-shell nanostructures. Reduction of 4-nitroaniline in the presence of sodium borohydride was chosen to validate the catalytic activity of the prepared core-shell metal nanocubes. Interestingly, the AgAu alloy shell layer over the AuNC (AuNC1@Ag0.25Au0.25) showed excellent catalytic activity compared with the pristine AuNC and monolayer and bilayer core-shell nanostructures.
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Affiliation(s)
| | | | | | - Ramasamy Ramaraj
- School of Chemistry , Madurai Kamaraj University , Madurai 625021 , India
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11
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Ma M, Yang Y, Feng R, Jia L, Chen G, Li W, Lyu P. Preparation and characterization of magnetic hollow Fe3
O4
/P(GMA-EGDMA)-SO3
H/Au-PPy recyclable catalyst for catalytic reduction of 4-nitrophenol. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4534] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Mingliang Ma
- Research Institute of Functional Materials; Qingdao University of Technology; Qingdao China
| | - Yuying Yang
- Research Institute of Functional Materials; Qingdao University of Technology; Qingdao China
| | - Renjun Feng
- Research Institute of Functional Materials; Qingdao University of Technology; Qingdao China
| | - Li Jia
- Research Institute of Functional Materials; Qingdao University of Technology; Qingdao China
| | - Guopeng Chen
- Research Institute of Functional Materials; Qingdao University of Technology; Qingdao China
| | - Wenting Li
- Research Institute of Functional Materials; Qingdao University of Technology; Qingdao China
| | - Ping Lyu
- Research Institute of Functional Materials; Qingdao University of Technology; Qingdao China
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12
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Nishi N, Yajima I, Amano KI, Sakka T. Janus-Type Gold/Polythiophene Composites Formed via Redox Reaction at the Ionic Liquid|Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2441-2447. [PMID: 29336574 DOI: 10.1021/acs.langmuir.7b03792] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Janus-type Au/polythiophene (PT) composites have been prepared by utilizing the liquid/liquid interface between water (W) and a hydrophobic ionic liquid (IL) as the redox reaction site. AuCl4- is reductively deposited, and terthiophene is oxidatively polymerized spacio-selectively at the IL|W interface, leading to the formation of the Au/PT composites. The composites are Janus-type Au-attached PT plates with two surface morphologies, flat surface and flowerlike surface at the W and IL sides of the plates at the IL|W interface, respectively. Not only surface morphologies but also attached Au structures are different at the two surfaces; Au microurchins on the flat surface and dendritic Au nanofibers on the flowerlike surface. Optical and scanning electron microscopic observations have revealed that nanofibers and microurchins are formed at the early and later stage of the reaction, respectively. Electrochemistry at the IL|W interface has illustrated that electron transfer across the IL|W interface during the formation of the Janus-type Au/PT composites is coupled with ion transfer of AuCl4- to compensate for the charge unbalance in the two liquid phases. AuCl4- transferred into IL is found to be the source of the dendritic Au nanofibers formed at the IL side of the PT plates.
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Affiliation(s)
- Naoya Nishi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University , Kyoto 615-8510, Japan
| | - Ikumi Yajima
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University , Kyoto 615-8510, Japan
| | - Ken-Ichi Amano
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University , Kyoto 615-8510, Japan
| | - Tetsuo Sakka
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University , Kyoto 615-8510, Japan
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13
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Veerakumar P, Thanasekaran P, Lin KC, Liu SB. Well-dispersed rhenium nanoparticles on three-dimensional carbon nanostructures: Efficient catalysts for the reduction of aromatic nitro compounds. J Colloid Interface Sci 2017; 506:271-282. [DOI: 10.1016/j.jcis.2017.07.065] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/22/2017] [Accepted: 07/17/2017] [Indexed: 11/28/2022]
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14
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Du M, Liu Q, Huang C, Qiu X. One-step synthesis of magnetically recyclable Co@BN core–shell nanocatalysts for catalytic reduction of nitroarenes. RSC Adv 2017. [DOI: 10.1039/c7ra04907b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The possible mechanism for Co@BN catalyzed 4-nitrophenol reduction in the presence of NaBH4. Moreover, the 13.6 wt% Co@BN core–shell nanoparticles exhibited the excellent catalytic activity in hydrogenation of nitroaromatic compounds.
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Affiliation(s)
- Man Du
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Qiuwen Liu
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Caijin Huang
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Xiaoqing Qiu
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- China
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15
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Zhang W, Sun Y, Zhang L. Fabrication of High Efficient Silver Nanoparticle Catalyst Supported on Poly(glycidyl methacrylate)–Polyacrylamide. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03393] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Wenchao Zhang
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering (Ministry
of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, People’s Republic of China
| | - Yan Sun
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering (Ministry
of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, People’s Republic of China
| | - Lin Zhang
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering (Ministry
of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, People’s Republic of China
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16
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Wang Z, Fu H, Tian Z, Han D, Gu F. Strong metal-support interaction in novel core-shell Au-CeO2 nanostructures induced by different pretreatment atmospheres and its influence on CO oxidation. NANOSCALE 2016; 8:5865-5872. [PMID: 26579875 DOI: 10.1039/c5nr06929g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Yolk-shell Au/CeO2 (Y-Au/CeO2) and encapsulated Au/CeO2 (E-Au/CeO2) nanocatalysts were prepared by using silica templates. A strong metal-support interaction (SMSI) in the Au/CeO2 nanostructures induced by different pretreatment atmospheres and its influence on CO oxidation were studied. E-Au/CeO2 pretreated in O2 had the best performance, followed by Y-Au/CeO2 pretreated in O2, Y-Au/CeO2 pretreated in H2, and E-Au/CeO2 pretreated in H2. The reasons for the different activities were discussed. There were two kinds of strong metal-support interactions (SMSI) between Au and CeO2 termed as R-SMSI (pretreated in reductive atmosphere) and O-SMSI (pretreated in oxidation atmosphere). Because of the smaller size of the Au and the larger contact area, both the R-SMSI and O-SMSI of E-Au/CeO2 were larger than those of Y-Au/CeO2. The O-SMSI was accompanied by the formation of cationic Au species that were beneficial to the enhancing of activity. As expected, the activity of E-Au/CeO2 pretreated in O2 with a Au size less than 5 nm was higher than that of Y-Au/CeO2 pretreated in O2 with 25 nm Au. However, it is surprisingly found that the activity of Y-Au/CeO2 pretreated in H2 with 25 nm Au was higher than that of E-Au/CeO2 pretreated in H2 with a Au size less than 5 nm. R-SMSI resulted in the formation of a AuCe alloy that had a negative effect on the activity. Compared with E-Au/CeO2 pretreated in H2, Y-Au/CeO2 pretreated in H2 exhibited a smaller relative content of the AuCe alloy, leading to a better activity of Y-Au/CeO2 pretreated in H2.
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Affiliation(s)
- Zhihua Wang
- State Key Laboratory of Chemical Resources, Beijing University of Chemical Technology, Beijing 100029, China.
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17
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Gao Y, Gu J, Li L, Zhao W, Li Y. Synthesis of gold Nanoshells through Improved Seed-Mediated Growth Approach: Brust-like, in Situ Seed Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2251-8. [PMID: 26862881 DOI: 10.1021/acs.langmuir.5b04344] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Gold nanoshells have shown great potentials in various fields. However, the widely used seed-mediated growth method based on a silica template for gold nanoshells is a complex and time-consuming procedure. In this work, mercaptosilica was first used as a template to synthesize gold nanoshells through improved seed-mediated growth method. It is verified that gold seeds were formed and attached onto the mercaptosilica nanospheres through Brust-like, in situ process, which makes this method extremely time-saving and easy to manipulate. Importantly, the key factors affecting the in situ process were demonstrated, allowing fine control on the synthesis in a highly reproducible manner. The as-synthesized nanoshells are monodisperse with well-defined morphology and tunable near-IR plasmon resonance. Furthermore, other metal nanoparticles such as Pt and Pd could be grafted onto the surface of mercaptosilica nanospheres through the same Brust-like, in situ process. These provide new insights into seed attachment, and the improved seed-mediated growth approach based on Brust-like, in situ seed formation will take an important step forward toward the widespread application of gold nanoshells.
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Affiliation(s)
- Yongping Gao
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, China
| | - Jinlou Gu
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, China
| | - Liang Li
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, China
| | - Wenru Zhao
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, China
| | - Yongsheng Li
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, China
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18
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Chen Y, Wang Q, Wang T. One-pot synthesis of M (M = Ag, Au)@SiO2 yolk-shell structures via an organosilane-assisted method: preparation, formation mechanism and application in heterogeneous catalysis. Dalton Trans 2016; 44:8867-75. [PMID: 25869174 DOI: 10.1039/c5dt00925a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate the fabrication of yolk-shell catalysts consisting of a single M (M = Ag, Au) nanoparticle encapsulated within a hollow mesoporous organosilica shell via an organosilane-assisted strategy. The advantages of our method lie in its good controllability of the void space as well as the thickness of the mesoporous shell. The M@CTAB/SiO2 synthesized through a modified Stöber method can transform to yolk-shell structures after adding (3-aminopropyl)trimethoxysilane (APTMS)/TEOS or (3-aminopropyl)triethoxysilane (APTES)/TEOS into the synthetic medium. We give unambiguous evidence that the middle CTAB/SiO2 layer transforms into a less dense APTMS-rich organic-inorganic layer which was selectively removed in alkaline aqueous solution, while the amino-functionalized hybrid shells remain intact. Moreover, we discuss the role of alkylamino groups in the shell in the transformation from Ag@SiO2 nanorattles to hollow structures when impregnating the as-synthesized Ag@SiO2 nanorattles in HAuCl4 aqueous solution. The nanorattles also exhibit high catalytic activity for the catalytic reduction of p-nitrophenol.
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Affiliation(s)
- Yu Chen
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China.
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19
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Wu ZQ, Ji YG, Zhai YN, Li SN, Lee JM. The facile ionic liquid-assisted synthesis of hollow and porous platinum nanotubes with enhanced catalytic performances. RSC Adv 2016. [DOI: 10.1039/c6ra13451c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile one-pot synthetic method was developed to synthesize hollow and porous Pt nanotubes (Pt-HPNTs) using silica nanorods as a template, ionic liquid as a precipitator and reductant, and in situ generated KCl as an etching agent.
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Affiliation(s)
- Zhu-Qing Wu
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- PR China
| | - Yi-Gang Ji
- Jiangsu Key Laboratory of Biofunction Molecule
- Department of Life Sciences and Chemistry
- Jiangsu Second Normal University
- Nanjing 210013
- PR China
| | - Ya-Nan Zhai
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- PR China
| | - Shu-Ni Li
- Key Laboratory of Macromolecular Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- PR China
| | - Jong-Min Lee
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore 637459
- Singapore
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20
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Nabid MR, Bide Y, Shojaipour M, Dastar F. Yolk/Shell AuNPs@Polyethyleneimine-Derived Carbon Nanoparticles as Nanoreactor for Catalytic Nitroarenes Reduction. Catal Letters 2015. [DOI: 10.1007/s10562-015-1637-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Bae SE, Kim KJ, Hwang YK, Huh S. Simple preparation of Pd-NP/polythiophene nanospheres for heterogeneous catalysis. J Colloid Interface Sci 2015; 456:93-9. [DOI: 10.1016/j.jcis.2015.06.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/08/2015] [Accepted: 06/11/2015] [Indexed: 10/23/2022]
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22
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Aditya T, Pal A, Pal T. Nitroarene reduction: a trusted model reaction to test nanoparticle catalysts. Chem Commun (Camb) 2015; 51:9410-31. [PMID: 25872865 DOI: 10.1039/c5cc01131k] [Citation(s) in RCA: 409] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Nitrophenol reduction to aminophenol with a reducing agent is conveniently carried out in aqueous medium mainly with a metal or metal oxide catalyst. This reduction is presently considered as a benchmark reaction to test a catalyst nanoparticle. Thousands of original reports have enriched this field of nanoparticle catalyzed reaction. Synthesis of different metal and metal oxide nanoparticles and their composites along with their role as catalysts for nitrophenol reduction with varying reducing agents have been elucidated here. The progress of the reaction is conveniently monitored by UV-visible spectrophotometry and hence it becomes a universally accepted model reaction. In this review we have discussed the reaction kinetics considering its elegance and importance enlightening the long known Langmuir-Hinshelwood mechanism and Eley-Rideal mechanism at length, along with a few other mechanisms recently reported. A brief description of the synthetic procedures of various nanoparticles and their respective catalytic behaviour towards nitroarene reduction has also been accounted here.
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Affiliation(s)
- Teresa Aditya
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
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23
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Xu Y, Chen L, Wang X, Yao W, Zhang Q. Recent advances in noble metal based composite nanocatalysts: colloidal synthesis, properties, and catalytic applications. NANOSCALE 2015; 7:10559-10583. [PMID: 26036784 DOI: 10.1039/c5nr02216a] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This Review article provides a report on progress in the synthesis, properties and catalytic applications of noble metal based composite nanomaterials. We begin with a brief discussion on the categories of various composite materials. We then present some important colloidal synthetic approaches to the composite nanostructures; here, major attention has been paid to bimetallic nanoparticles. We also introduce some important physiochemical properties that are beneficial from composite nanomaterials. Finally, we highlight the catalytic applications of such composite nanoparticles and conclude with remarks on prospective future directions.
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Affiliation(s)
- Yong Xu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano and Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
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24
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Zhang W, Sun Y, Zhang L. In Situ Synthesis of Monodisperse Silver Nanoparticles on Sulfhydryl-Functionalized Poly(glycidyl methacrylate) Microspheres for Catalytic Reduction of 4-Nitrophenol. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01010] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Wenchao Zhang
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering of the Ministry
of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Yan Sun
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering of the Ministry
of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Lin Zhang
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering of the Ministry
of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
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25
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Xiong S, Wang Y, Zhu J, Yu J, Hu Z. Mussel-adhesive-inspired fabrication of multifunctional silver nanoparticle assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5504-5512. [PMID: 25919224 DOI: 10.1021/acs.langmuir.5b00820] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The assembly of metal nanoparticles (NPs) has attracted a great deal of attention recently because of their collective properties that could not be exhibited by individual NPs. Here a one-step approach was reported for the fabrication of spherical silver NP assemblies (AgNAs). The formation of AgNAs simply included the stirring of silver ammonia and 3,4-dihydroxy-l-phenylalanine (DOPA) in aqueous solution at room temperature, in which DOPA acted as a reductant for AgNPs first because of its reducing ability and then directed the assembly of AgNPs into AgNAs. The AgNAs exhibited hierarchical structure with controllable sizes ranging from 180 to 610 nm by adjusting the concentrations of reagents. The two individual components, AgNPs and polyDOPA, also allowed AgNAs with multiple functions as demonstrated in this study of durable catalytic activity, high SERS sensitivity, and good antioxidant properties. The thin polyDOPA layer coated on AgNAs further offered the opportunity to modify the surface of AgNAs. The results presented here may provide a green and facile approach to designing multifunctional NP assemblies.
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Affiliation(s)
- Shuqiang Xiong
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
| | - Yan Wang
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
| | - Jing Zhu
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
| | - Junrong Yu
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
| | - Zuming Hu
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
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26
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Yang J, Li Y, Zu L, Tong L, Liu G, Qin Y, Shi D. Light-concentrating plasmonic Au superstructures with significantly visible-light-enhanced catalytic performance. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8200-8208. [PMID: 25840556 DOI: 10.1021/acsami.5b01078] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Noble metals are well-known for their surface plasmon resonance effect that enables strong light absorption typically in the visible regions for gold and silver. However, unlike semiconductors, noble metals are commonly considered incapable of catalyzing reactions via photogenerated electron-hole pairs due to their continuous energy band structures. So far, photonically activated catalytic system based on pure noble metal nanostructures has seldom been reported. Here, we report the development of three different novel plasmonic Au superstructures comprised of Au nanoparticles, multiple-twinned nanoparticles and nanoworms assembling on the surfaces of SiO2 nanospheres respectively via a well-designed synthetic strategy. It is found that these novel Au superstructures show enhanced broadband visible-light absorption due to the plasmon resonance coupling within the superstructures, and thus can effectively focus the energy of photon fluxes to generate much more excited hot electrons and holes for promoting catalytic reactions. Accordingly, these Au superstructures exhibit significantly visible-light-enhanced catalytic efficiency (up to ∼264% enhancement) for the commercial reaction of p-nitrophenol reduction.
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Affiliation(s)
- Jinhu Yang
- †Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, People's Republic of China
| | - Ying Li
- †Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, People's Republic of China
| | - Lianhai Zu
- †Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, People's Republic of China
| | - Lianming Tong
- §Institute of Physics Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Guanglei Liu
- †Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, People's Republic of China
| | | | - Donglu Shi
- ∥Materials Science and Engineering Program, Department of Mechanical and Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio 45221, United States
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27
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Saha N, Sarkar A, Ghosh AB, Dutta AK, Bhadu GR, Paul P, Adhikary B. Highly active spherical amorphous MoS2: facile synthesis and application in photocatalytic degradation of rose bengal dye and hydrogenation of nitroarenes. RSC Adv 2015. [DOI: 10.1039/c5ra19442c] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The amorphous MoS2 was derived from the MoO2(acda)2 complex via a solvothermal route and this as-synthesized particles has been found to catalyze reduction of nitroarenes to corresponding amino compounds in presence of NaBH4.
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Affiliation(s)
- Namrata Saha
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
| | - Arpita Sarkar
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
| | - Abhisek Brata Ghosh
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
| | - Amit Kumar Dutta
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
| | - Gopala Ram Bhadu
- Department of Analytical Science
- Central Salt and Marine Chemicals Research Institute
- Bhavnagar 364002
- India
| | - Parimal Paul
- Department of Analytical Science
- Central Salt and Marine Chemicals Research Institute
- Bhavnagar 364002
- India
| | - Bibhutosh Adhikary
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
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28
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Lee H, Kim H, Choi TJ, Park HW, Chang JY. Preparation of a microporous organic polymer by the thiol–yne addition reaction and formation of Au nanoparticles inside the polymer. Chem Commun (Camb) 2015; 51:9805-8. [DOI: 10.1039/c5cc02269j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We prepared an Au NP loaded microporous polymer using the thiol–yne reaction and in situ reduction reaction, and investigated its catalytic activity.
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Affiliation(s)
- Hyunpyo Lee
- Department of Materials Science and Engineering
- College of Engineering
- Seoul National University
- Seoul 151-744
- Korea
| | - Hyungwoo Kim
- Department of Materials Science and Engineering
- College of Engineering
- Seoul National University
- Seoul 151-744
- Korea
| | - Tae Jin Choi
- Department of Materials Science and Engineering
- College of Engineering
- Seoul National University
- Seoul 151-744
- Korea
| | - Hyun Woo Park
- Department of Materials Science and Engineering
- College of Engineering
- Seoul National University
- Seoul 151-744
- Korea
| | - Ji Young Chang
- Department of Materials Science and Engineering
- College of Engineering
- Seoul National University
- Seoul 151-744
- Korea
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29
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Mild and Selective Hydrogenation of Nitro Compounds using Palladium Nanoparticles Supported on Amino-Functionalized Mesocellular Foam. ChemCatChem 2014. [DOI: 10.1002/cctc.201402488] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Fountoulaki S, Daikopoulou V, Gkizis PL, Tamiolakis I, Armatas GS, Lykakis IN. Mechanistic Studies of the Reduction of Nitroarenes by NaBH4 or Hydrosilanes Catalyzed by Supported Gold Nanoparticles. ACS Catal 2014. [DOI: 10.1021/cs500379u] [Citation(s) in RCA: 221] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Stella Fountoulaki
- Department
of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
| | - Vassiliki Daikopoulou
- Department
of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
| | - Petros L. Gkizis
- Department
of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
| | - Ioannis Tamiolakis
- Department
of Materials Science and Technology, University of Crete, University
Campus, 71003 Voutes
Heraklion, Crete, Greece
| | - Gerasimos S. Armatas
- Department
of Materials Science and Technology, University of Crete, University
Campus, 71003 Voutes
Heraklion, Crete, Greece
| | - Ioannis N. Lykakis
- Department
of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
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31
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Hong JY, Huh S. Facile preparation of SERS-active nanostructured Au spheres by simple reduction of AuCl4- ions with EDOT. J Colloid Interface Sci 2014; 418:360-5. [DOI: 10.1016/j.jcis.2013.12.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 12/10/2013] [Accepted: 12/12/2013] [Indexed: 10/25/2022]
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32
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Zhang Y, Wang Y, Yu J, Chen L, Zhu J, Hu Z. Polybenzimidazole assisted fabrication of multiwalled carbon nanotube buckypapers and their silver nanoparticle hybrids. RSC Adv 2014. [DOI: 10.1039/c4ra06445c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Multiwalled carbon nanotube buckypapers and their hybrids with Ag nanoparticles have been fabricated with the assistance of polybenzimidazole.
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Affiliation(s)
- Yanli Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Donghua University
- Shanghai, P. R. China
| | - Yan Wang
- College of Material Science and Engineering
- Donghua University
- Shanghai, P. R. China
| | - Junrong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Donghua University
- Shanghai, P. R. China
| | - Lei Chen
- College of Material Science and Engineering
- Donghua University
- Shanghai, P. R. China
| | - Jing Zhu
- College of Material Science and Engineering
- Donghua University
- Shanghai, P. R. China
| | - Zuming Hu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Donghua University
- Shanghai, P. R. China
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33
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Fu G, Ding L, Chen Y, Lin J, Tang Y, Lu T. Facile water-based synthesis and catalytic properties of platinum–gold alloy nanocubes. CrystEngComm 2014. [DOI: 10.1039/c3ce41848k] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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34
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Rawat NK, Ghosal A, Ahmad S. Influence of microwave irradiation on various properties of nanopolythiophene and their anticorrosive nanocomposite coatings. RSC Adv 2014. [DOI: 10.1039/c4ra06679k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The time and energy efficient microwave synthesis of nano polythiophene provides higher yield, smaller particle size, superior physico-mechanical properties and promising corrosion inhibition properties as compared to conventional synthesis.
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Affiliation(s)
- Neha Kanwar Rawat
- Materials Research Laboratory
- Dept of Chemistry
- Jamia Millia Islamia
- New Delhi, India
| | - Anujit Ghosal
- Materials Research Laboratory
- Dept of Chemistry
- Jamia Millia Islamia
- New Delhi, India
| | - Sharif Ahmad
- Materials Research Laboratory
- Dept of Chemistry
- Jamia Millia Islamia
- New Delhi, India
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35
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Li Z, Zhang L, Li Q, Hu J, Liu P, Feng S, Chen W, Li Y. Design and fabrication of ZnO/Ni heterogeneous binary arrays with selective control of structure, size and distance via stepwise colloidal lithography. RSC Adv 2013. [DOI: 10.1039/c3ra41931b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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