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Mujahid MH, Upadhyay TK, Khan F, Pandey P, Park MN, Sharangi AB, Saeed M, Upadhye VJ, Kim B. Metallic and metal oxide-derived nanohybrid as a tool for biomedical applications. Biomed Pharmacother 2022; 155:113791. [DOI: 10.1016/j.biopha.2022.113791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/29/2022] [Accepted: 10/02/2022] [Indexed: 11/02/2022] Open
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Eid K, Sliem MH, Al-Kandari H, Sharaf MA, Abdullah AM. Rational Synthesis of Porous Graphitic-like Carbon Nitride Nanotubes Codoped with Au and Pd as an Efficient Catalyst for Carbon Monoxide Oxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:3421-3431. [PMID: 30715897 DOI: 10.1021/acs.langmuir.8b03588] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The precise fabrication of efficient catalysts for CO oxidation is of particular interest in a wide range of industrial and environmental applications. Herein, a scalable method is presented for the controlled synthesis of graphitic-like porous carbon nitride nanotubes (gC3N4NTs) codoped with Au and Pd (Au/Pd/gC3N4NTs) as efficient catalysts for carbon monoxide (CO) conversion. This includes the activation of melamine with nitric acid in the presence of ethylene glycol and metal precursors followed by consecutive polymerization and carbonization. This drives the formation of porous one-dimensional gC3N4NT with an outstanding surface area of (320.6 m2 g-1) and an atomic-level distribution of Au and Pd. Intriguingly, the CO conversion efficiency of Au/Pd/gC3N4NTs was substantially greater than that for gC3N4NTs. The approach thus presented may provide new avenues for the utilization of gC3N4 doped with multiple metal-based catalysts for CO conversion reactions which had been rarely reported before.
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Affiliation(s)
- Kamel Eid
- Center for Advanced Materials , Qatar University , Doha 2713 , Qatar
| | - Mostafa H Sliem
- Center for Advanced Materials , Qatar University , Doha 2713 , Qatar
| | - Halema Al-Kandari
- Department of Health Environment , College of Health Sciences, Public Authority for Applied Education and Training , P.O. Box 1428, Faiha 72853 , Kuwait
| | - Mohammed A Sharaf
- Department of Maritime Transportation Management Engineering , İstanbul University-Cerrahpaşa , Avcilar, Istanbul 34320 , Turkey
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Taketoshi A, Ishida T, Ohashi H, Honma T, Haruta M. Preparation of gold clusters on metal oxides by deposition-precipitation with microwave drying and their catalytic performance for CO and sulfide oxidation. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62909-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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YAN Y, NIZAMIDIN P, TURDI G, KARI N, YIMIT A. Room-temperature H 2S Gas Sensor Based on Au-doped ZnFe 2O 4 Yolk-shell Microspheres. ANAL SCI 2017; 33:945-951. [DOI: 10.2116/analsci.33.945] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yin YAN
- College of Chemistry and Chemical Engineering, Xinjiang University
- College of Chemistry and Environmental Science, Kashgar University
| | - Patima NIZAMIDIN
- College of Chemistry and Chemical Engineering, Xinjiang University
| | - Gulmira TURDI
- College of Chemistry and Chemical Engineering, Xinjiang University
| | - Nuerguli KARI
- College of Chemistry and Chemical Engineering, Xinjiang University
| | - Abliz YIMIT
- College of Chemistry and Chemical Engineering, Xinjiang University
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Murayama T, Haruta M. Preparation of gold nanoparticles supported on Nb 2 O 5 by deposition precipitation and deposition reduction methods and their catalytic activity for CO oxidation. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(16)62508-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zhou Y, Li Y, Shen W. Shape Engineering of Oxide Nanoparticles for Heterogeneous Catalysis. Chem Asian J 2016; 11:1470-88. [DOI: 10.1002/asia.201600115] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Yan Zhou
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
| | - Yong Li
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
| | - Wenjie Shen
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
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Kundu S, Ravishankar N. Rapid synthesis of hybrids and hollow PdO nanostructures by controlled in situ dissolution of a ZnO nanorod template: insights into the formation mechanism and thermal stability. NANOSCALE 2016; 8:1462-1469. [PMID: 26677066 DOI: 10.1039/c5nr06730h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Hollow nanomaterials have attracted a lot of interest by virtue of their wide range of applications that arise primarily due to their unique architecture. A common strategy to synthesize hollow nanomaterials is by nucleation of the shell material over a preformed core and subsequent dissolution of the core in the second step. Herein an ultrafast, microwave route has been demonstrated, to synthesize PdO nanotubes in a single step using ZnO as a sacrificial template. The mechanism of the nanotube formation has been investigated in detail using control experiments. By tuning the starting ratio of PdCl2 : ZnO, hollow to hybrid PdO nanostructures could be obtained using the same method. Conversion of the PdO to Pd nanotubes has been shown by simple NaBH4 treatment. The thermal stability of the PdO nanotubes has been studied. The insights presented here are general and applicable for the synthesis of hybrids/hollow structures in other systems as well.
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Affiliation(s)
- Subhajit Kundu
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India.
| | - N Ravishankar
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India.
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Derrouiche S, La Fontaine C, Thrimurtulu G, Casale S, Delannoy L, Lauron-Pernot H, Louis C. Unusual behaviour of Au/ZnO catalysts in selective hydrogenation of butadiene due to the formation of a AuZn nanoalloy. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01664a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The loss of activity observed when Au/ZnO was activated under H2 was explained by the formation of AuZn alloy.
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Affiliation(s)
- Salim Derrouiche
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Camille La Fontaine
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Gode Thrimurtulu
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Sandra Casale
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Laurent Delannoy
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Hélène Lauron-Pernot
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Paris
| | - Catherine Louis
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Paris
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Liu MH, Chen YW, Liu X, Kuo JL, Chu MW, Mou CY. Defect-Mediated Gold Substitution Doping in ZnO Mesocrystals and Catalysis in CO Oxidation. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02093] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ming-Han Liu
- Department
of Chemistry and Center of Condensed Matter Science, National Taiwan University, Taipei 10617, Taiwan
| | - Yun-Wen Chen
- Institute
of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Xiaoyan Liu
- Department
of Chemistry and Center of Condensed Matter Science, National Taiwan University, Taipei 10617, Taiwan
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jer-Lai Kuo
- Institute
of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Ming-Wen Chu
- Center
of Condensed Matter Science, National Taiwan University, Taipei 10617, Taiwan
| | - Chung-Yuan Mou
- Department
of Chemistry and Center of Condensed Matter Science, National Taiwan University, Taipei 10617, Taiwan
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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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Kundu S, Kundu P, Van Tendeloo G, Ravishankar N. Au2S(x)/CdS nanorods by cation exchange: mechanistic insights into the competition between cation-exchange and metal ion reduction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:3895-3900. [PMID: 24889074 DOI: 10.1002/smll.201400524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 05/08/2014] [Indexed: 06/03/2023]
Abstract
It is well known that metals with higher electron affinity like Au tend to undergo reduction rather than cation-exchange. It is experimentally shown that under certain conditions cation-exchange is dominant over reduction. Thermodynamic calculation further consolidates the understanding and paves the way for better predictability of cation-exchange/reduction reactions for other systems.
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Affiliation(s)
- Subhajit Kundu
- Materials Research Centre, Indian Institute of Science, C.V. Raman Avenue, Bangalore, 560012, India
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Zhu YJ, Chen F. Microwave-assisted preparation of inorganic nanostructures in liquid phase. Chem Rev 2014; 114:6462-555. [PMID: 24897552 DOI: 10.1021/cr400366s] [Citation(s) in RCA: 317] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ying-Jie Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, People's Republic of China
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Rajendran R, Sohila S, Muralidharan R, Muthamizhchelvan C, Ponnusamy S. One-Pot Microwave Synthesis of Fluorescent Carbogenic Nanoparticles from Triton X-100 for Cell Imaging. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301093] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hu L, Zhang P, Sun Y, Bao S, Chen Q. ZnO/Co3O4Porous Nanocomposites Derived from MOFs: Room-Temperature Ferromagnetism and High Catalytic Oxidation of CO. Chemphyschem 2013; 14:3953-9. [DOI: 10.1002/cphc.201300807] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 10/10/2013] [Indexed: 11/11/2022]
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Kundu P, Anumol EA, Ravishankar N. Pristine nanomaterials: synthesis, stability and applications. NANOSCALE 2013; 5:5215-5224. [PMID: 23674238 DOI: 10.1039/c3nr00382e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Capping-free and linker-free nanostructures/hybrids possess superior properties due to the presence of pristine surfaces and interfaces. In this review, various methods for synthesizing pristine nanomaterials are presented along with the general principles involved in their morphology control. In wet chemical synthesis, the interplay between various reaction parameters results in diverse morphology. The fundamental principles behind the evolution of morphology including nanoporous aggregates of metals and other inorganic materials, 2D nanocrystals of metals is elucidated by capping-free methods in aqueous medium. In addition, strategies leading to the attachment of bare noble metal nanoparticles to functional oxide supports/reduced graphene oxide has been demonstrated which can serve as a simple solution for obtaining thermally stable and efficient supported catalysts with free surfaces. Solution based synthesis of linker-free oxide-semiconductor hybrids and capping-free metal nanowires on substrates are also discussed in this context with ZnO/CdS and ultrathin Au nanowires as examples. A simple and rapid microwave-assisted method is highlighted for obtaining such hybrids which can be employed for high-yield production of similar materials.
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Affiliation(s)
- Paromita Kundu
- Materials Research Centre, Indian Institute of Science, Bangalore, India
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Leelavathi A, Madras G, Ravishankar N. Origin of enhanced photocatalytic activity and photoconduction in high aspect ratio ZnO nanorods. Phys Chem Chem Phys 2013; 15:10795-802. [PMID: 23694926 DOI: 10.1039/c3cp51058a] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Faceted ZnO nanorods with different aspect ratios were synthesized by a solvothermal method by tuning the reaction time. Increased reaction leads to the formation of high aspect ratio ZnO nanorods largely bound by the prism planes. The high aspect ratio rods showed significantly higher visible light photocatalytic activity when compared to the lower aspect ratio structures. It is proposed that the higher activity is due to better charge separation in the elongated 1D structure. In addition, the fraction of unsaturated Zn(2+) sites is higher on the {1010} facets, leading to better adsorption of oxygen-containing species. These species enhance the production of reactive radicals that are responsible for photodegradation. The photocurrent for these ZnO nanostructures under solar light was measured and a direct correlation between photocurrent and aspect ratio was observed. Since the underlying mechanisms for photodegradation and photocurrent generation are directly related to the efficiency of electron-hole creation and separation, this observation corroborates that the charge separation processes are indeed enhanced in the high aspect ratio structures. The efficiency of photoconduction (electron-hole pair separation) could be further improved by attaching Au nanoparticles on ZnO, which can act as a sink for the electrons. This heterostructure exhibits a high chemisorption of oxygen, which facilitates the production of highly reactive radicals contributing to the high photoreactivity. The suggested mechanisms are applicable to other n-type semiconductor nanostructures with important implications for applications relating to energy and the environment.
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Affiliation(s)
- A Leelavathi
- Centre for Nanoscience and Engineering, Indian Institute of Science, Bangalore, 560012, India
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Singhania N, Anumol EA, Ravishankar N, Madras G. Influence of CeO2 morphology on the catalytic activity of CeO2–Pt hybrids for CO oxidation. Dalton Trans 2013; 42:15343-54. [DOI: 10.1039/c3dt51364e] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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