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Chen YA, Chou KH, Kuo YY, Wu CY, Hsiao PW, Chen PW, Yuan SH, Wuu DS. Formation of ZnO/Zn 0.5Cd 0.5Se Alloy Quantum Dots in the Presence of High Oleylamine Contents. NANOMATERIALS 2019; 9:nano9070999. [PMID: 31373313 PMCID: PMC6669603 DOI: 10.3390/nano9070999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/27/2019] [Accepted: 07/08/2019] [Indexed: 11/16/2022]
Abstract
To the best of our knowledge, this report presents, for the first time, the schematic of the possible chemical reaction for a one-pot synthesis of Zn0.5Cd0.5Se alloy quantum dots (QDs) in the presence of low/high oleylamine (OLA) contents. For high OLA contents, high-resolution transmission electron microscopy (HRTEM) results showed that the average size of Zn0.5Cd0.5Se increases significantly from 4 to 9 nm with an increasing OLA content from 4 to 10 mL. First, [Zn(OAc)2]–OLA complex can be formed by a reaction between Zn(OAc)2 and OLA. Then, Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) data confirmed that ZnO is formed by thermal decomposition of the [Zn(OAc)2]–OLA complex. The results indicated that ZnO grew on the Zn0.5Cd0.5Se surface, thus increasing the particle size. For low OLA contents, HRTEM images were used to estimate the average sizes of the Zn0.5Cd0.5Se alloy QDs, which were approximately 8, 6, and 4 nm with OLA loadings of 0, 2, and 4 mL, respectively. We found that Zn(OAc)2 and OLA could form a [Zn(OAc)2]–OLA complex, which inhibited the growth of the Zn0.5Cd0.5Se alloy QDs, due to the decreasing reaction between Zn(oleic acid)2 and Se2−, which led to a decrease in particle size.
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Affiliation(s)
- Yi-An Chen
- Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
- Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung 40227, Taiwan
| | - Kuo-Hsien Chou
- Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Yi-Yang Kuo
- Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Cheng-Ye Wu
- Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Po-Wen Hsiao
- Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Po-Wei Chen
- Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Shuo-Huang Yuan
- Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Dong-Sing Wuu
- Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
- Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung 40227, Taiwan.
- Research Center for Sustainable Energy and Nanotechnology, National Chung Hsing University, Taichung 40227, Taiwan.
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Zhang HX, Yang YT, Liu XJ. Study of Cadmium-Doped Zinc Oxide Nanocrystals with Composition and Size Dependent Band Gaps. CHINESE J CHEM PHYS 2018. [DOI: 10.1063/1674-0068/31/cjcp1708181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Hai-xiao Zhang
- Key Laboratory of Modern Acoustics, Ministry of Education, Institute of Acoustics, Nanjing University, Nanjing 210093, China
| | - Yue-tao Yang
- Key Laboratory of Modern Acoustics, Ministry of Education, Institute of Acoustics, Nanjing University, Nanjing 210093, China
| | - Xiao-jun Liu
- Key Laboratory of Modern Acoustics, Ministry of Education, Institute of Acoustics, Nanjing University, Nanjing 210093, China
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Cheng K, Han X, Meng J, Wang S, Du Z. A composition-tunable ZnxCd1−xSe/ZnO core–shell nanowire array: mechanisms for the enhanced charge separation and its photovoltaic applications. RSC Adv 2015. [DOI: 10.1039/c4ra15204b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The mechanism for enhanced charge separation was discussed and the charge transport model was established.
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Affiliation(s)
- Ke Cheng
- Key Lab for Special Functional Materials of Ministry of Education
- Collaborative Innovation Center of Nano Functional Materials and Applications
- Henan University
- Kaifeng
- P. R. China
| | - Xiao Han
- Key Lab for Special Functional Materials of Ministry of Education
- Collaborative Innovation Center of Nano Functional Materials and Applications
- Henan University
- Kaifeng
- P. R. China
| | - Jian Meng
- Key Lab for Special Functional Materials of Ministry of Education
- Collaborative Innovation Center of Nano Functional Materials and Applications
- Henan University
- Kaifeng
- P. R. China
| | - Shujie Wang
- Key Lab for Special Functional Materials of Ministry of Education
- Collaborative Innovation Center of Nano Functional Materials and Applications
- Henan University
- Kaifeng
- P. R. China
| | - Zuliang Du
- Key Lab for Special Functional Materials of Ministry of Education
- Collaborative Innovation Center of Nano Functional Materials and Applications
- Henan University
- Kaifeng
- P. R. China
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Ma A, Tang Z, Shen S, Zhi L, Yang J. Controlled synthesis of ZnxCd1−xS nanorods and their composite with RGO for high-performance visible-light photocatalysis. RSC Adv 2015. [DOI: 10.1039/c5ra01846c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Zn0.5Cd0.5S nanorods with a suitable bandgap and aspect ratio displayed the highest photoresponse to visible light. Zn0.5Cd0.5S/RGO nanocomposites with line-to-line interface exhibited enhanced photocatalytic activity.
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Affiliation(s)
- Anping Ma
- School of Materials Science and Engineering
- University of Shanghai for Science and Technology
- Shanghai
- P. R. China
- School of Environment and Architecture
| | - Zhihong Tang
- School of Materials Science and Engineering
- University of Shanghai for Science and Technology
- Shanghai
- P. R. China
| | - Shuling Shen
- School of Materials Science and Engineering
- University of Shanghai for Science and Technology
- Shanghai
- P. R. China
| | - Linjie Zhi
- School of Materials Science and Engineering
- University of Shanghai for Science and Technology
- Shanghai
- P. R. China
| | - Junhe Yang
- School of Materials Science and Engineering
- University of Shanghai for Science and Technology
- Shanghai
- P. R. China
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Li Y, Chopra N. Fabrication of nanoscale heterostructures comprised of graphene-encapsulated gold nanoparticles and semiconducting quantum dots for photocatalysis. Phys Chem Chem Phys 2015; 17:12881-93. [DOI: 10.1039/c5cp00928f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Patterned growth of multilayer graphene shell encapsulated gold nanoparticles (GNPs) and their covalent linking with inorganic quantum dots are demonstrated.
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Affiliation(s)
- Yuan Li
- Metallurgical and Materials Engineering Department
- Center for Materials for Information Technology (MINT)
- The University of Alabama
- Tuscaloosa
- USA
| | - Nitin Chopra
- Metallurgical and Materials Engineering Department
- Center for Materials for Information Technology (MINT)
- The University of Alabama
- Tuscaloosa
- USA
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