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Das A, Liu D, Wary RR, Vasenko AS, Prezhdo OV, Nair RG. Enhancement of Photocatalytic and Photoelectrochemical Performance of ZnO by Mg Doping: Experimental and Density Functional Theory Insights. J Phys Chem Lett 2023; 14:4134-4141. [PMID: 37103474 DOI: 10.1021/acs.jpclett.3c00736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Doped ZnO nanostructures have shown great potential for solar energy applications. Considering the compatible ionic radius, Mg atoms can be doped into ZnO at different concentrations. The current work reports a combined experimental and density functional theory study on the influence of the Mg dopant concentration on ZnO performance simultaneously for photocatalytic dye removal and photoelectrochemical water splitting. Among all the samples, Mg(3)-ZnO (3 at. % Mg) exhibits superior sunlight-driven photocatalytic performance. The optimal Mg-ZnO shows an 8-fold increase in the photocatalytic activity compared to the pristine ZnO. Likewise, the most active photocatalyst shows high photoelectrochemical performance with a photocurrent response of 1.54 mA at the lowest onset potential, 11 times higher than the pristine ZnO. Tuning of the Mg content results in the generation of extra charge carriers and a reduced recombination rate, which are the crucial factors responsible for enhanced photocatalytic and photoelectrochemical performance.
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Affiliation(s)
| | | | - Riu Riu Wary
- Solar Energy Materials Research & Testing Laboratory, Department of Physics, National Institute of Technology Silchar, 788010 Silchar, Assam, India
| | - Andrey S Vasenko
- HSE University, 101000 Moscow, Russia
- I.E. Tamm Department of Theoretical Physics, P.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Oleg V Prezhdo
- Department of Chemistry, University of Southern California, 90089 Los Angeles, California, United States
- Department of Physics & Astronomy, University of Southern California, 90089 Los Angeles, California, United States
| | - Ranjith G Nair
- Solar Energy Materials Research & Testing Laboratory, Department of Physics, National Institute of Technology Silchar, 788010 Silchar, Assam, India
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Photodegradation of Rhodamine-B Dye under Natural Sunlight using CdO. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2022. [DOI: 10.9767/bcrec.17.2.14172.466-475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The present study includes synthesis of CdO thin film by simple and cost effective chemical bath deposition method. Cadmium monochloroaceatate were used for preparation of CdO thin film. The structural, optical properties of CdO thin film were investigated with the help of X-ray diffraction (XRD) and UV-Vis NIR double beam spectrometry. The XRD studies revealed that annealed thin film shows crystalline in nature having 48.4 nm in size. The optical band gap of thin film was found to be 2.13 eV. Scanning Electron Microscopy (SEM) images shows sphere like structure which is closely arranged with each other. The presence of functional group was confirmed by Fourier Transform Infra Red (FTIR). Brunauer–Emmett–Teller (BET) surface area analysis confirm formation of a mesoporous CdO with 6.01 m2/g surface area and 31.96 nm average pore diameter. The photocatalytic activity of prepared thin film was checked by using Rhodamine-B as a model dye under natural sunlight and found to be 48%. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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Zhao D, Guo K, Han S, Doronkin DE, Lund H, Li J, Grunwaldt JD, Zhao Z, Xu C, Jiang G, Kondratenko EV. Controlling Reaction-Induced Loss of Active Sites in ZnO x/Silicalite-1 for Durable Nonoxidative Propane Dehydrogenation. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05778] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dan Zhao
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29A, 18059 Rostock, Germany
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, Beijing 102249, P. R. China
| | - Ke Guo
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, Beijing 102249, P. R. China
| | - Shanlei Han
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29A, 18059 Rostock, Germany
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, Beijing 102249, P. R. China
| | - Dmitry E. Doronkin
- Institute of Catalysis Research and Technology and Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 20, 76131 Karlsruhe, Germany
| | - Henrik Lund
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29A, 18059 Rostock, Germany
| | - Jianshu Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, Beijing 102249, P. R. China
| | - Jan-Dierk Grunwaldt
- Institute of Catalysis Research and Technology and Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 20, 76131 Karlsruhe, Germany
| | - Zhen Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, Beijing 102249, P. R. China
| | - Chunming Xu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, Beijing 102249, P. R. China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, P. R. China
| | - Guiyuan Jiang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, Beijing 102249, P. R. China
| | - Evgenii V. Kondratenko
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29A, 18059 Rostock, Germany
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Dye degradation, antibacterial and in-silico analysis of Mg/cellulose-doped ZnO nanoparticles. Int J Biol Macromol 2021; 185:153-164. [PMID: 34157328 DOI: 10.1016/j.ijbiomac.2021.06.101] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 11/20/2022]
Abstract
Various concentrations of Mg into fixed amount of cellulose nanocrystals (CNC)-doped ZnO were synthesized using facile chemical precipitation. The aim of present study is to remove dye degradation of methylene blue (MB) and bactericidal behavior with synthesized product. Phase constitution, functional group analysis, optical behavior, elemental composition, morphology and microstructure were examined using XRD, FTIR, UV-Vis spectrophotometer, EDS and HR-TEM. Highly efficient photocatalytic performance was observed in basic medium (98%) relative to neutral (65%), and acidic (83%) was observed upon Mg and CNC co-doping. Significant bactericidal activity of doped ZnO nanoparticles depicted inhibition zones for G -ve and +ve bacteria ranging (2.20 - 4.25 mm) and (5.80-7.25 mm) for E. coli and (1.05 - 2.75 mm) and (2.80 - 4.75 mm) for S. aureus at low and high doses, respectively. Overall, doped nanostructures showed significant (P < 0.05) bactericidal efficacy against G +ve relative to G -ve. Furthermore, the molecular docking studies were employed to rationalize possible mechanism behind these in vitro bactericidal activities. In silico findings suggested CNC doped ZnO nanocomposites as possible inhibitors of β-lactamase (Binding score: -7.936 kcal/mol), DHFR (Binding score: -5.691 kcal/mol) and FabI (Binding score: -8.673 kcal/mol).
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Sahoo A, Miryala M, Dixit T, Klimkowicz A, Francis B, Murakami M, Rao MSR, Krishnan S. Femtosecond Pulse Ablation Assisted Mg-ZnO Nanoparticles for UV-Only Emission. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1326. [PMID: 32640733 PMCID: PMC7407115 DOI: 10.3390/nano10071326] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/26/2020] [Accepted: 06/28/2020] [Indexed: 12/21/2022]
Abstract
The need for improved UV emitting luminescent materials underscored by applications in optical communications, sterilization and medical technologies is often addressed by wide bandgap semiconducting oxides. Among these, the Mg-doped ZnO system is of particular interest as it offers the opportunity to tune the UV emission by engineering its bandgap via doping control. However, both the doped system and its pristine congener, ZnO, suffer from being highly prone to parasitic defect level emissions, compromising their efficiency as light emitters in the ultraviolet region. Here, employing the process of femtosecond pulsed laser ablation in a liquid (fs-PLAL), we demonstrate the systematic control of enhanced UV-only emission in Mg-doped ZnO nanoparticles using both photoluminescence and cathodoluminescence spectroscopies. The ratio of luminescence intensities corresponding to near band edge emission to defect level emission was found to be six-times higher in Mg-doped ZnO nanoparticles as compared to pristine ZnO. Insights from UV-visible absorption and Raman analysis also reaffirm this defect suppression. This work provides a simple and effective single-step methodology to achieve UV-emission and mitigation of defect emissions in the Mg-doped ZnO system. This is a significant step forward in its deployment for UV emitting optoelectronic devices.
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Affiliation(s)
- Anubhab Sahoo
- Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India; (A.S.); (T.D.); (B.F.)
| | - Muralidhar Miryala
- Superconducting Material Laboratory, Graduate School of Science and Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-Ku, Tokyo 135-8546, Japan; (M.M.); (M.M.)
| | - Tejendra Dixit
- Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India; (A.S.); (T.D.); (B.F.)
- Department of Electronics and Communication Engineering, Indian Institute of Information Technology Design and Manufacturing Kancheepuram, Chennai 600127, India
| | - Alicja Klimkowicz
- Department of Engineering Science and Mechanics, Shibaura Institute of Techno.logy, 3-7-5 Toyosu, Koto-Ku, Tokyo 135-8546, Japan;
| | - Bellarmine Francis
- Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India; (A.S.); (T.D.); (B.F.)
| | - Masato Murakami
- Superconducting Material Laboratory, Graduate School of Science and Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-Ku, Tokyo 135-8546, Japan; (M.M.); (M.M.)
| | | | - Sivarama Krishnan
- Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India; (A.S.); (T.D.); (B.F.)
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Intarasuwan K, Amornpitoksuk P, Suwanboon S, Graidist P, Maungchanburi S, Randorn C. Effect of Ag loading on activated carbon doped ZnO for bisphenol A degradation under visible light. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.07.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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7
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T. D, Rao KV, Bikshalu K, Malapati V, Sadasivuni KK. Non-enzymatic sensing of glucose using screen-printed electrode modified with novel synthesized CeO2@CuO core shell nanostructure. Biosens Bioelectron 2018; 111:166-173. [DOI: 10.1016/j.bios.2018.03.063] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 03/11/2018] [Accepted: 03/28/2018] [Indexed: 11/24/2022]
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8
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Enhanced photocatalytic activity of Ag-ZnO nanoparticles synthesized by using Padina gymnospora seaweed extract. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.04.073] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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9
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Juxtaposition of PES based hollow fiber membrane: Antifouling and antibacterial potential of LiCl mediated PVA–ZnO blend. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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10
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Oxidized guar gum–ZnO hybrid nanostructures: synthesis, characterization and antibacterial activity. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0747-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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11
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da Silva GTST, Carvalho KTG, Lopes OF, Gomes ES, Malagutti AR, Mastelaro VR, Ribeiro C, Mourão HAJL. Synthesis of ZnO Nanoparticles Assisted by N Sources and their Application in the Photodegradation of Organic Contaminants. ChemCatChem 2017. [DOI: 10.1002/cctc.201700756] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gelson T. S. T. da Silva
- Departamento de Química; Universidade Federal de São Carlos; Rodovia Washington Luiz, km 235 13.565-905 São Carlos SP Brazil
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Kele T. G. Carvalho
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Osmando F. Lopes
- Departamento de Química; Universidade Federal de São Carlos; Rodovia Washington Luiz, km 235 13.565-905 São Carlos SP Brazil
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Eliziana S. Gomes
- Departamento de Farmácia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
| | - Andréa R. Malagutti
- Departamento de Farmácia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
| | - Valmor R. Mastelaro
- Instituto de Física de São Carlos; Universidade de São Paulo; Avenida Trabalhador São-carlense, 400 13566-590 São Carlos SP Brazil
| | - Caue Ribeiro
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Henrique A. J. L. Mourão
- Instituto de Ciência e Tecnologia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
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12
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Sengupta D, Mondal B, Mukherjee K. Structural features and dye-sensitized solar cell performance of chemically synthesized F doped ZnO particles. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3743-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Introduction of a simple sensing device for monitoring of hydrogen peroxide based on ZnFe 2 O 4 nanoparticles/chitosan modified gold electrode. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Dayakar. T, Venkateswara Rao. K, Bikshalu. K, Rajendar. V, Park SH. Novel synthesis and structural analysis of zinc oxide nanoparticles for the non enzymatic glucose biosensor. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1472-1479. [DOI: 10.1016/j.msec.2017.02.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/29/2016] [Accepted: 02/07/2017] [Indexed: 10/20/2022]
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15
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Chun HS, Park D, Eun Lim S, Jeong KH, Park JS, Park HJ, Kang S, Kang KS, Park HG, An HR, Huh YS, Lee YC. Two zinc-aminoclays' in-vitro cytotoxicity assessment in HeLa cells and in-vivo embryotoxicity assay in zebrafish. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 137:103-112. [PMID: 27915140 DOI: 10.1016/j.ecoenv.2016.11.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 11/22/2016] [Accepted: 11/25/2016] [Indexed: 06/06/2023]
Abstract
Two zinc-aminoclays [ZnACs] with functionalized primary amines [(-CH2)3NH2] were prepared by a simple sol-gel reaction using cationic metal precursors of ZnCl2 and Zn(NO3)2 with 3-aminopropyl triethoxysilane [APTES] under ambient conditions. Due to the facile interaction of heavy metals with primary amine sites and Zn-related intrinsic antimicrobial activity, toxicity assays of ZnACs nanoparticles (NPs) prior to their environmental and human-health applications are essential. However, such reports remain rare. Thus, in the present study, a cell viability assay of in-vitro HeLa cells comparing ZnCl2, Zn(NO3)2 salts, and ZnO (~50nm average diameter) NPs was performed. Interestingly, compared with the ZnCl2, and Zn(NO3)2 salts, and ZnO NPs (18.73/18.12/51.49µg/mL and 18.12/15.19/46.10µg/mL of IC50 values for 24 and 48h), the two ZnACs NPs exhibited the highest toxicity (IC50 values of 21.18/18.36µg/mL and 18.37/17.09µg/mL for 24 and 48h, respectively), whose concentrations were calculated on Zn elemental composition. This might be due to the enhanced bioavailability and uptake into cells of ZnAC NPs themselves and their positively charged hydrophilicity by reactive oxygen species (ROS) generation, particularly as ZnACs exist in cationic NP's form, not in released Zn2+ ionic form (i.e., dissolved nanometal). However, in an in-vivo embryotoxicity assay in zebrafish, ZnACs and ZnO NPs showed toxic effects at 50-100µg/mL (corresponding to 37.88-75.76 of Zn wt% µg/mL). The hatching rate (%) of zebrafish was lowest for the ZnO NPs, particularly where ZnAC-[(NO3)2] is slightly more toxic than ZnAC-[Cl2]. These results are all very pertinent to the issue of ZnACs' potential applications in the environmental and biomedical fields.
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Affiliation(s)
- Hang-Suk Chun
- Department of Predictive Toxicology, Korea Institute of Toxicology (KIT), Daejeon 34114, Republic of Korea
| | - Duckshin Park
- Korea Railroad Research Institute (KRRI), 176 Cheoldobakmulkwan-ro, Uiwang-si, Gyeonggi-do 16105, Republic of Korea
| | - Song Eun Lim
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Kwang-Hun Jeong
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Ji-Seon Park
- Department of Predictive Toxicology, Korea Institute of Toxicology (KIT), Daejeon 34114, Republic of Korea; Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Han-Jin Park
- Department of Predictive Toxicology, Korea Institute of Toxicology (KIT), Daejeon 34114, Republic of Korea
| | - Shinyoung Kang
- Department of Chemical and Biomolecular Engineering (BK21+ program), KAIST, 291 Daehakno, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Kyoung Suk Kang
- Department of Chemical and Biomolecular Engineering (BK21+ program), KAIST, 291 Daehakno, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hyun Gyu Park
- Department of Chemical and Biomolecular Engineering (BK21+ program), KAIST, 291 Daehakno, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Ha-Rim An
- Advanced Nano-surface Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Yun Suk Huh
- Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea.
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Khan A, Ahmed MI, Adam A, Azad AM, Qamar M. A novel fabrication methodology for sulfur-doped ZnO nanorods as an active photoanode for improved water oxidation in visible-light regime. NANOTECHNOLOGY 2017; 28:055602. [PMID: 28029100 DOI: 10.1088/1361-6528/aa51b6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Incorporation of foreign moiety in the lattice of semiconductors significantly alters their optoelectronic behavior and opens a plethora of new applications. In this paper, we report the synthesis of sulfur-doped zinc oxide (S-doped ZnO) nanorods by reacting ZnO nanorods with diammonium sulfide in vapor phase. Microscopic investigation revealed that the morphological features, such as, the length (2-4 μm) and width (100-250 nm) of the original hexagonal ZnO nanorods remained intact post-sulfidation. X-ray photoelectron spectroscopy analysis of the sulfide sample confirmed the incorporation of sulfur into ZnO lattice. The optical measurements suggested the extension of absorption threshold into visible region upon sulfidation. Photoelectrochemical (PEC) activities of pure and S-doped ZnO nanorods were compared for water oxidation in visible light (λ > 420 nm), which showed several-fold increment in the performance of S-doped ZnO sample; the observed amelioration in the PEC activity was rationalized in terms of preferred visible light absorption and low resistance of sulfide sample, as evidenced by optical and electrochemical impedance spectroscopy.
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Affiliation(s)
- A Khan
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
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17
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Tiwari N, Kumar S, Ghosh AK, Chatterjee S, Jha S, Bhattacharyya D. Structural investigations of (Mn, Dy) co-doped ZnO nanocrystals using X-ray absorption studies. RSC Adv 2017. [DOI: 10.1039/c7ra10748j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
EXAFS measurements on sol gel derived (Mn, Dy) co-doped ZnO nanocrystals show that oxygen vacancies are created near the Dy sites into ZnO lattice. Thus, oxygen vacancy assisted bound magnetic polarons contribute to the RTFM in the Dy doped samples.
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Affiliation(s)
- N. Tiwari
- Atomic & Molecular Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400 085
- India
- Homi Bhabha National Institute
| | - S. Kumar
- Hiroshima Synchrotron Radiation Center
- Hiroshima University
- Higashi-Hiroshima 739-0046
- Japan
| | - A. K. Ghosh
- Materials Research Laboratory
- Department of Physics
- Banaras Hindu University
- Varanasi-221 005
- India
| | - S. Chatterjee
- Department of Physics
- Indian Institute of Technology
- Banaras Hindu University
- Varanasi-221 005
- India
| | - S. N. Jha
- Atomic & Molecular Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400 085
- India
| | - D. Bhattacharyya
- Atomic & Molecular Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400 085
- India
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Balamurugan S, Balu A, Usharani K, Suganya M, Anitha S, Prabha D, Ilangovan S. Synthesis of CdO nanopowders by a simple soft chemical method and evaluation of their antimicrobial activities. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.psra.2016.10.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Lee J, Sorescu DC, Deng X. Tunable Lattice Constant and Band Gap of Single- and Few-Layer ZnO. J Phys Chem Lett 2016; 7:1335-40. [PMID: 27003692 DOI: 10.1021/acs.jpclett.6b00432] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Single and few-layer ZnO(0001) (ZnO(nL), n = 1-4) grown on Au(111) have been characterized via scanning tunneling microscopy (STM), scanning tunneling spectroscopy (STS), and density functional theory (DFT) calculations. We find that the in-plane lattice constants of the ZnO(nL, n ≤ 3) are expanded compared to that of the bulk wurtzite ZnO(0001). The lattice constant reaches a maximum expansion of 3% in the ZnO(2L) and decreases to the bulk wurtzite ZnO value in the ZnO(4L). The band gap decreases monotonically with increasing number of ZnO layers from 4.48 eV (ZnO(1L)) to 3.42 eV (ZnO(4L)). These results suggest that a transition from a planar to the bulk-like ZnO structure occurs around the thickness of ZnO(4L). The work also demonstrates that the lattice constant and the band gap in ultrathin ZnO can be tuned by controlling the number of layers, providing a basis for further investigation of this material.
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Affiliation(s)
- Junseok Lee
- National Energy Technology Laboratory, U.S. Department of Energy , Pittsburgh, Pennsylvania 15236, United States
- AECOM , P.O. Box 618, South Park, Pennsylvania 15129, United States
| | - Dan C Sorescu
- National Energy Technology Laboratory, U.S. Department of Energy , Pittsburgh, Pennsylvania 15236, United States
| | - Xingyi Deng
- National Energy Technology Laboratory, U.S. Department of Energy , Pittsburgh, Pennsylvania 15236, United States
- AECOM , P.O. Box 618, South Park, Pennsylvania 15129, United States
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Paul S, Ghosh S, Saha M, De SK. Enhanced photophysical properties of plasmonic magnetic metal-alloyed semiconductor heterostructure nanocrystals: a case study for the Ag@Ni/Zn1−xMgxO system. Phys Chem Chem Phys 2016; 18:13092-107. [DOI: 10.1039/c6cp00375c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multiple plasmonic magnetic Ag@Ni core–shell metal nanocrystal decorated Zn1−xMgxO nanoheterostructures have been synthesized and enhanced photophysical properties were found.
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Affiliation(s)
- Sumana Paul
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
| | - Sirshendu Ghosh
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
| | - Manas Saha
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
| | - S. K. De
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
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21
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Bhunia R, Yadav A, Jha S, Bhattacharyya D, Hussain S, Bhar R, Pal A. Probing local environment of Mn-doped nanocrystalline-ZnO/PVDF composite thin films by XPS and EXAFS studies. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.09.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Behera AK, Das P, Thakur I, Chatterjee S, Chatterjee S. Temporal wetting property of “Micro” versus “Nano” rods of ZnO grown using the pressure dependent aqueous solution method. NEW J CHEM 2015. [DOI: 10.1039/c5nj01453k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Study of temporal wetting properties of micro- and nano-rods of zinc oxide.
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Affiliation(s)
- Akshaya K. Behera
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar 751007
- India
| | - Pritam Das
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar 751007
- India
| | - Indrani Thakur
- Colloids and Materials Chemistry Department
- CSIR-Institute of Minerals and Materials Technology
- Acharya Vihar
- Bhubaneswar
- India
| | - Sriparna Chatterjee
- Colloids and Materials Chemistry Department
- CSIR-Institute of Minerals and Materials Technology
- Acharya Vihar
- Bhubaneswar
- India
| | - Shyamal Chatterjee
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar 751007
- India
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23
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Reddy DA, Kim DH, Rhee SJ, Lee BW, Liu C. Tunable blue-green-emitting wurtzite ZnS:Mg nanosheet-assembled hierarchical spheres for near-UV white LEDs. NANOSCALE RESEARCH LETTERS 2014; 9:20. [PMID: 24418612 PMCID: PMC3896820 DOI: 10.1186/1556-276x-9-20] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 12/27/2013] [Indexed: 05/30/2023]
Abstract
Mg-doped ZnS hierarchical spheres have been synthesized via hydrothermal method using mixed solvents of ethylenediamine and DI water without any surface-active agent. The surface morphology and microstructure studies revealed that the hierarchical spheres were consisted of many well-aligned nanosheets with width 10 nm and length about 50 ~ 100 nm. X-Ray diffraction results show that the ZnS:Mg hierarchical spheres have wurtzite structure with high crystallinity. The absorption edge in the diffuse reflection spectra shifts towards lower wavelength with increasing Mg concentration, indicating an expansion in the bandgap energy that is estimated to be in the range of 3.28 to 3.47 eV. Blue-green photoluminescence with tunable intensity and peak position was observed depending on the Mg content. The Mg2+-activated ZnS phosphor can be good candidates for blue-green components in near-UV white light-emitting diodes.
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Affiliation(s)
| | - Deok Hyeon Kim
- Department of Physics, Hankuk University of Foreign Studies, Gyeonggi 449-791, Republic of Korea
| | - Seuk Joo Rhee
- Department of Physics, Hankuk University of Foreign Studies, Gyeonggi 449-791, Republic of Korea
| | - Bo Wha Lee
- Department of Physics, Hankuk University of Foreign Studies, Gyeonggi 449-791, Republic of Korea
| | - Chunli Liu
- Department of Physics, Hankuk University of Foreign Studies, Gyeonggi 449-791, Republic of Korea
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24
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Siddheswaran R, Medlín R, Bělský P, Vavruňková V, Očenášek J, David B, Šutta P. Heterogeneous phase formation in diluted magnetic semiconducting Zn1−x−yCoxAlyO (CAZO) nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra02973a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This article reports a systematic investigation of the synthesis and structural characterization of composite CAZO [(Zn1−x−yCoxAlyO; x = 0.04, 0.03, 0.02; y = 0.01, 0.02, 0.03)] nanoparticles from combustion.
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Affiliation(s)
- R. Siddheswaran
- New Technologies Research Centre
- University of West Bohemia in Pilsen
- Plzeň-30614, Czech Republic
| | - R. Medlín
- New Technologies Research Centre
- University of West Bohemia in Pilsen
- Plzeň-30614, Czech Republic
| | - P. Bělský
- New Technologies Research Centre
- University of West Bohemia in Pilsen
- Plzeň-30614, Czech Republic
| | - V. Vavruňková
- New Technologies Research Centre
- University of West Bohemia in Pilsen
- Plzeň-30614, Czech Republic
| | - J. Očenášek
- New Technologies Research Centre
- University of West Bohemia in Pilsen
- Plzeň-30614, Czech Republic
| | - B. David
- CEITEC IPM
- Institute of Physics of Materials
- ASCR
- CZ-61662 Brno, Czech Republic
| | - P. Šutta
- New Technologies Research Centre
- University of West Bohemia in Pilsen
- Plzeň-30614, Czech Republic
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25
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Gao H, Zhu T, Zhao X, Deng Y. Synergetic effect of Zn substitution on the electron and phonon transport in Mg2Si0.5Sn0.5-based thermoelectric materials. Dalton Trans 2014; 43:14072-8. [DOI: 10.1039/c4dt01734j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Isoelectronic Zn substitution in Mg2Si0.5Sn0.5-based thermoelectric materials improved mobility without affecting carrier concentration, leading to an enhancement of ZT.
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Affiliation(s)
- Hongli Gao
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou, China
- School of Materials Science and Engineering
- BeiHang University
| | - Tiejun Zhu
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou, China
| | - Xinbing Zhao
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou, China
| | - Yuan Deng
- School of Materials Science and Engineering
- BeiHang University
- Beijing, China
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26
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Amin M, Shah NA, Bhatti AS, Malik MA. Effects of Mg doping on optical and CO gas sensing properties of sensitive ZnO nanobelts. CrystEngComm 2014. [DOI: 10.1039/c4ce00153b] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis, optical characterization and enhanced carbon monoxide (CO) gas sensing properties of magnesium (Mg) doped 1D zinc oxide (ZnO) nanobelts obtained via a vapor transport method.
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Affiliation(s)
- Muhammad Amin
- Thin Films Technology Laboratory
- Department of Physics
- COMSATS Institute of Information Technology
- Islamabad, Pakistan
| | - Nazar Abbas Shah
- Thin Films Technology Laboratory
- Department of Physics
- COMSATS Institute of Information Technology
- Islamabad, Pakistan
| | - Arshad Saleem Bhatti
- Centre for Micro & Nano Devices
- Department of Physics
- COMSATS Institute of Information Technology
- Islamabad, Pakistan
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27
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28
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Singh J, Kumar P, Hui KN, Jung J, Tiwari RS, Srivasatva ON. Morphological evolution, structural and optical investigations of ZnO:Mg (MgxZn1−xO (0 ≤ x ≤ 30%)) nanostructures. RSC Adv 2013. [DOI: 10.1039/c3ra23046e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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