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Liu T, Du XJ, Li S, Wu QL, Guo Q, Liu ZZ, Zhao JP, Liu FC. Carbothermal redox reaction in constructing defective carbon as superior oxygen reduction catalysts. NANOSCALE 2022; 14:14248-14254. [PMID: 36129320 DOI: 10.1039/d2nr03617g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Defects can greatly promote the catalytic activity of a carbon-based electrocatalyst due to charge redistribution of its electroneutral π-conjugated structure. However, it is still a huge challenge to introduce enough defects into carbon-based materials to improve their catalytic activity. Herein, we report a new method for defect generation by the pyrolysis of the sulfur-nitrogen-containing coordination polymer [Zn(ptt)2]n (ptt = 1-phenyl-1H-tetrazole-5-thiol). A series of controlled experiments clearly demonstrates that the carbothermal reduction reaction of zinc sulfide with carbon at a high temperature plays an important role in creating defects and enhancing the catalytic activity for the oxygen reduction reaction (ORR) of the carbon-based materials. The ZnS/C-1100 with a high content of defects and a small number of ZnS nanoparticles exhibits excellent ORR electrocatalytic performances in alkaline media, in which the half-wave potential (0.894 V vs. RHE), stability, and methanol tolerance are all superior to that of a 20 wt% Pt/C catalyst. Moreover, the ZnS/C-1100 driven ZAB (zinc air battery) exhibits a stable discharge at 10 mA, a peak power density of 134 mW cm-2 and a cathode current density of 265 mA cm-2, which are significantly better than that catalyzed by 20 wt% Pt/C under the same conditions. This research not only develops a new highly active catalyst, but also provides a new method for the preparation of defect-rich carbon materials.
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Affiliation(s)
- Tao Liu
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, TKL of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China.
| | - Xin-Jie Du
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, TKL of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China.
| | - Shuai Li
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, TKL of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China.
| | - Qi-Long Wu
- School of Environment and Science, Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan Campus, Brisbane, QLD 4111, Australia
| | - Qi Guo
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, TKL of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China.
| | - Zhi-Zhuang Liu
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, TKL of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China.
| | - Jiong-Peng Zhao
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, TKL of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China.
| | - Fu-Chen Liu
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, TKL of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China.
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Zhong Y, Wang S, Zhang S, Zhang L. Carbon-quantum-dot-modified ZnS nanospheres for highly efficient electrocatalytic hydrogen evolution. NEW J CHEM 2022. [DOI: 10.1039/d2nj00664b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CQDs modified ZnS nanospheres are modulated by tuning the addition of l-cysteine, and the CQDs attached on ZnS nanospheres plays an important role in improving the electron mobility and active areas, which determine the electrocatalytic performance.
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Affiliation(s)
- Yueyao Zhong
- School of Materials Science and Engineering, Shandong Jianzhu University, Jinan, 250100, P. R. China
| | - Shouzhi Wang
- Institute of Novel Semiconductors, State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Shiying Zhang
- School of Science, Shandong Jianzhu University, Jinan, 250100, P. R. China
| | - Lei Zhang
- Institute of Novel Semiconductors, State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
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Wasim Khan M, Zuo X, Yang Q, Tang H, Rehman KMU, Wu M, Li G. Quantum dot embedded N-doped functionalized multiwall carbon nanotubes boost the short-circuit current of Ru(ii) based dye-sensitized solar cells. NANOSCALE 2020; 12:1046-1060. [PMID: 31845950 DOI: 10.1039/c9nr09227g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Here, we report zinc sulfide quantum dots, ZnS(QDs), moored on N-doped functionalized multiwall carbon nanotubes (MWCNTs) wrapped with reduced graphene oxide (rGO). The MWCNTs have a tangled network, a particular surface area, and a distinctive hollow structure that may be suitable for use as a counter electrode (CE) material. A ZnS@N.f-MWCNTs@rGO composite as the CE on a fluorine-doped tin oxide substrate in a dye-sensitized solar cell (DSSC) was fabricated using a doctor blade technique. The electrochemical performance showed that at the electrolyte/CE interface, the ZnS(QDs) and N-doped functionalized MWCNTs wrapped with rGO (ZnS@N.f-MWCNTs@rGO) electrode has a lower transfer charge resistance (Rct) and a greater catalytic capacity than naked ZnS(QDs). A power conversion efficiency (PCE) of 9.4% was attained for this DSSC gadget, which is higher than that of a DSSC gadget utilizing ZnS(QDs), ZnS@N.f-MWCNTs, ZnS@rGO and Pt. Also, the DSSC device using ZnS@N.f-MWCNTs@rGO had a fill factor (FF) that was better than the other counter electrodes. The cyclic voltammetry and electrochemical impedance spectra (EIS) electron transfer measurements showed that ZnS@N.f-MWCNTs@rGO films can provide fast electron transfer from the electrolyte to the CE and great electrocatalytic activity to reduce triiodide to a CE based on ZnS@N.f-MWCNTs@rGO in the DSSC.
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Affiliation(s)
- Muhammad Wasim Khan
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China
| | - Xueqin Zuo
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China
| | - Qun Yang
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China
| | - Huaibao Tang
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China and Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230601, P.R. China
| | - Khalid Mehmood Ur Rehman
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China and Department of Physics, Riphah International University, Faisalabad Campus, Pakistan
| | - Mingzai Wu
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China and Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230601, P.R. China
| | - Guang Li
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China and Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230601, P.R. China and Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P.R. China. and Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P.R. China
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Jiang L, Xu X, Yuan J, Zuo Y, Tao Y, Yao D, He G, Chen H. Heterogeneous activation of persulfate for the degradation of bisphenol A with Ni 2SnO 4–RGO. NEW J CHEM 2020. [DOI: 10.1039/c9nj05863j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The possible reaction mechanism of the activation of persulfate by Ni2SnO4–RGO for the degradation of BPA.
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Affiliation(s)
- Ling Jiang
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- China
| | - Xiangyang Xu
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- China
| | - Jingjing Yuan
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- China
| | - Yuanjie Zuo
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- China
| | - Yingrui Tao
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- China
| | - Dachuan Yao
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- China
| | - Guangyu He
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- China
| | - Haiqun Chen
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- China
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Tunable Nonlinear Optical Property of MnS Nanoparticles with Different Size and Crystal Form. NANOMATERIALS 2019; 10:nano10010034. [PMID: 31877785 PMCID: PMC7022266 DOI: 10.3390/nano10010034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 12/25/2022]
Abstract
It is significant to study the reason that semiconductor material has adjustable third-order optical nonlinearity through crystal form and dimensions are changed. αMnS nanoparticles with different crystal forms and sizes were successfully prepared by one-step hydrothermal synthesis method and their size-limited third-order nonlinear optical property was tested by Z-scan technique with 30 ps laser pulses at 532 nm wavelength. Nanoparticles of different crystal forms exhibited different NLO (nonlinear optical) responses. γMnS had stronger NLO response than αMnS because of higher fluorescence quantum yield. Two-photon absorption and the nonlinear refraction are enhanced as size of nanoparticlesreduced. The nanoparticles had maximum NLO susceptibility which was 3.09 × 10−12 esu. Susceptibility of αMnS increased about nine times than that of largest nanoparticles. However, it was reduced when size was further decreased. This trend was explained by the effects of light induced dipole moments. And defects in αMnS nanoparticles also had effect on this nonlinear process. MnS nanoparticles had potential application value in optical limiting and optical modulation.
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