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Yang Z, Peng X, Zheng J, Wang Z. Plasma synthesis of oxygen vacancy-rich CuO/Cu 2(OH) 3NO 3 heterostructure nanosheets for boosting degradation performance. Phys Chem Chem Phys 2023; 25:29108-29119. [PMID: 37869910 DOI: 10.1039/d3cp03918h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Defect regulation and the construction of a heterojunction structure are effective strategies to improve the catalytic activity of catalysts. In this work, the rapid conversion of CuO to Cu2(OH)3NO3 was achieved by fixing nitrogen in air as NO3- using dielectric barrier discharge (DBD) plasma. This innovative approach resulted in the successful synthesis of a CuO/Cu2(OH)3NO3 nanosheet heterostructure. Notably, the samples prepared using plasma exhibit thinner thickness and larger specific surface area. Importantly, oxygen vacancies are introduced, simultaneously forming heterojunction interfaces within the CuO/Cu2(OH)3NO3 structure. CuO/Cu2(OH)3NO3 using plasma effectively degraded 96% of methyl orange within 8 min in the dark. The degradation rate is 81 and 23 times that of CuO and Cu2(OH)3NO3 using hydrothermal methods, respectively. The high catalytic activity is attributed to the large specific surface area, the abundance of active sites, and the synergy between oxygen vacancies and the strong heterojunction interfacial interactions, which accelerate the transfer of electrons and the production of reactive oxygen species (˙O2- and ˙OH). The mechanism of plasma preparation was proposed on account of microstructure characterization and online mass spectroscopy, which indicated that gas etching, gas expansion, and the repulsive force of electrons play key roles in plasma exfoliation.
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Affiliation(s)
- Zikun Yang
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, China.
| | - Xiangfeng Peng
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, China.
| | - Jingxuan Zheng
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, China.
| | - Zhao Wang
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, China.
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2
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He J, Wen X, Wu L, Chen H, Hu J, Hou X. Dielectric barrier discharge plasma for nanomaterials: Fabrication, modification and analytical applications. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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3
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Xu H, Peng X, Zheng J, Wang Z. Tuning nitrogen defects and doping sulfur in carbon nitride for enhanced visible light photocatalytic activity. Front Chem Sci Eng 2022. [DOI: 10.1007/s11705-022-2175-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Yu M, Zhang L, Wen J, Zhang H, Liu F, Lv Y, Zhao X. Photocatalytic Degradation of Composites with Magnesium Aluminum Hydrotalcite Derived Metal Oxides and g-C3N4. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02166-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Chen Q, Song B, Li X, Wang R, Wang S, Xu S, Reniers F, Lam CH. Enhancing the Properties of Photocatalysts via Nonthermal Plasma Modification: Recent Advances, Treatment Variables, Mechanisms, and Perspectives. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03062] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qianqian Chen
- School of Material Science and Engineering, Henan University of Technology, 100 Lianhua Street, Zhengzhou 450001, China
| | - Bing Song
- Scion, 49 Sala Street, Whakarewarewa, Rotorua 3010, New Zealand
| | - Xiaochen Li
- Department of Medical Imaging, Henan Provincial People’s Hospital & the People’s Hospital of Zhengzhou University, 7 Weiwu Road, Zhengzhou 450003, China
| | - Renjie Wang
- School of Material Science and Engineering, Henan University of Technology, 100 Lianhua Street, Zhengzhou 450001, China
| | - Shun Wang
- School of Material Science and Engineering, Henan University of Technology, 100 Lianhua Street, Zhengzhou 450001, China
| | - Sankui Xu
- School of Material Science and Engineering, Henan University of Technology, 100 Lianhua Street, Zhengzhou 450001, China
| | - François Reniers
- Chemistry of Surfaces, Interfaces, and Nanomaterials and Laboratoire de Chimie des Polymer̀es, Faculté des Sciences, Universite Libre de Bruxelles, ULB Boulevard du Triomphe, Brussels 1050, Belgium
| | - Chun Ho Lam
- School of Energy and Environment, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong
- State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong
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6
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Hasan MAM, Wang Y, Bowen CR, Yang Y. 2D Nanomaterials for Effective Energy Scavenging. NANO-MICRO LETTERS 2021; 13:82. [PMID: 34138309 PMCID: PMC8006560 DOI: 10.1007/s40820-021-00603-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 12/29/2020] [Indexed: 05/26/2023]
Abstract
The development of a nation is deeply related to its energy consumption. 2D nanomaterials have become a spotlight for energy harvesting applications from the small-scale of low-power electronics to a large-scale for industry-level applications, such as self-powered sensor devices, environmental monitoring, and large-scale power generation. Scientists from around the world are working to utilize their engrossing properties to overcome the challenges in material selection and fabrication technologies for compact energy scavenging devices to replace batteries and traditional power sources. In this review, the variety of techniques for scavenging energies from sustainable sources such as solar, air, waste heat, and surrounding mechanical forces are discussed that exploit the fascinating properties of 2D nanomaterials. In addition, practical applications of these fabricated power generating devices and their performance as an alternative to conventional power supplies are discussed with the future pertinence to solve the energy problems in various fields and applications.
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Affiliation(s)
- Md Al Mahadi Hasan
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, People's Republic of China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Yuanhao Wang
- SUSTech Engineering Innovation Center, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, People's Republic of China.
| | - Chris R Bowen
- Department of Mechanical Engineering, University of Bath, Bath, BA27AK, UK
| | - Ya Yang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, People's Republic of China.
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning, 530004, People's Republic of China.
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7
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Zheng J, Zhang B, Wang Z. Electron-assisted synthesis of g-C 3N 4/MoS 2 composite with dual defects for enhanced visible-light-driven photocatalysis. RSC Adv 2020; 11:78-86. [PMID: 35423020 PMCID: PMC8691062 DOI: 10.1039/d0ra10148f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/10/2020] [Indexed: 01/02/2023] Open
Abstract
g-C3N4/MoS2 composites were successfully prepared by an electron-assisted strategy in one step. Dielectric barrier discharge (DBD) plasma as an electron source, which has low bulk temperature and high electron energy, can etch and modify the surface of g-C3N4/MoS2. The abundant N and S vacancies were introduced in the composites by plasma. The dual defects promoted the recombination and formation of heterojunctions of the g-C3N4/MoS2 composite. It exhibited stronger light harvesting ability and higher charge separation efficiency than that of pure g-C3N4 and MoS2. Compared with the sample by traditional calcination method, the plasma-sample showed better performance for degrading rhodamine B (RhB) and methyl orange. RhB is completely degraded within 2 hours on g-C3N4/MoS2 by plasma. A mechanism for the photocatalytic degradation of organic pollutants via the composites was proposed. An electron-assisted strategy provides a green and effective platform to achieve catalysts with improved performance.
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Affiliation(s)
- Jingxuan Zheng
- National Engineering Research Centre of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
| | - Bo Zhang
- National Engineering Research Centre of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
| | - Zhao Wang
- National Engineering Research Centre of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
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Zhang B, Peng X, Wang Z. Noble Metal-Free TiO 2-Coated Carbon Nitride Layers for Enhanced Visible Light-Driven Photocatalysis. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E805. [PMID: 32340144 PMCID: PMC7221541 DOI: 10.3390/nano10040805] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/21/2020] [Accepted: 04/21/2020] [Indexed: 11/16/2022]
Abstract
Composites of g-C3N4/TiO2 were one-step prepared using electron impact with dielectric barrier discharge (DBD) plasma as the electron source. Due to the low operation temperature, TiO2 by the plasma method shows higher specific surface area and smaller particle size than that prepared via conventional calcination. Most interestingly, electron impact produces more oxygen vacancy on TiO2, which facilitates the recombination and formation of heterostructure of g-C3N4/TiO2. The composites have higher light absorption capacity and lower charge recombination efficiency. g-C3N4/TiO2 by plasma can produce hydrogen at a rate of 219.9 μmol·g-1·h-1 and completely degrade Rhodamine B (20mg·L-1) in two hours. Its hydrogen production rates were 3 and 1.5 times higher than that by calcination and pure g-C3N4, respectively. Electron impact, ozone and oxygen radical also play key roles in plasma preparation. Plasma has unique advantages in metal oxides defect engineering and the preparation of heterostructured composites with prospective applications as photocatalysts for pollutant degradation and water splitting.
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Affiliation(s)
| | | | - Zhao Wang
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (B.Z.); (X.P.)
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Lee GJ, Lee XY, Lyu C, Liu N, Andandan S, Wu JJ. Sonochemical Synthesis of Copper-doped BiVO 4/g-C 3N 4 Nanocomposite Materials for Photocatalytic Degradation of Bisphenol A under Simulated Sunlight Irradiation. NANOMATERIALS 2020; 10:nano10030498. [PMID: 32164266 PMCID: PMC7153604 DOI: 10.3390/nano10030498] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 02/27/2020] [Accepted: 03/05/2020] [Indexed: 01/31/2023]
Abstract
Copper-doped bismuth vanadate/graphitic carbon nitride (BiVO4/g-C3N4) nanocomposite materials were successfully fabricated using a sonochemical approach. Cu-doped BiVO4/g-C3N4 nanocomposite photocatalysts could improve electron/hole (e-/h+) pair separation, stability, and light-harvesting efficiency compared to pristine BiVO4 or g-C3N4, resulting in the enhancement of photocatalytic activity. The optimal parameters, such as pH value at 10, photocatalyst dosage of 0.4 g L-1, and 10 mol% Cu-doped BiVO4/g-C3N4 photocatalyst, were determined to degrade initial concentration of 20 ppm Bisphenol A, which could be completely removed after 90 min. Furthermore, the excessive doping of copper (> 10 mol%) could not synthesize the pure monoclinic scheelite phase, which substantially resulted in the reduction of the photocatalytic activity.
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Affiliation(s)
- Gang-Juan Lee
- Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan; (G.-J.L.); (X.-Y.L.)
| | - Xin-Yu Lee
- Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan; (G.-J.L.); (X.-Y.L.)
| | - Cong Lyu
- College of New Energy and Environment, Jilin University, Changchun 130021, China; (C.L.); (N.L.)
| | - Na Liu
- College of New Energy and Environment, Jilin University, Changchun 130021, China; (C.L.); (N.L.)
| | - Sambandam Andandan
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620015, India
| | - Jerry J. Wu
- Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan; (G.-J.L.); (X.-Y.L.)
- Correspondence: ; Tel.: +886-4-24517250 (ext. 5206); Fax: +886-4-24517686
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10
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Yu F, Di L. Plasma for Energy and Catalytic Nanomaterials. NANOMATERIALS 2020; 10:nano10020333. [PMID: 32075260 PMCID: PMC7075108 DOI: 10.3390/nano10020333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/11/2020] [Accepted: 02/13/2020] [Indexed: 12/27/2022]
Abstract
This Special Issue "Plasma for Energy and Catalytic Nanomaterials" of Nanomaterials is focused on advancements in synthesis and applications of energy and catalytic nanomaterials by plasma [...].
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Affiliation(s)
- Feng Yu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
- Bingtuan Industrial Technology Research Institute, Shihezi University, Shihezi 832003, China
- Correspondence: (F.Y.); (L.D.); Tel.: +86-0993-205-8775 (F.Y.)
| | - Lanbo Di
- College of Physical Science and Technology, Dalian University, Dalian 116622, China
- Correspondence: (F.Y.); (L.D.); Tel.: +86-0993-205-8775 (F.Y.)
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11
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Wu T, Kou Y, Zheng H, Lu J, Kadasala NR, Yang S, Guo C, Liu Y, Gao M. A Novel Au@Cu 2O-Ag Ternary Nanocomposite with Highly Efficient Catalytic Performance: Towards Rapid Reduction of Methyl Orange Under Dark Condition. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 10:E48. [PMID: 31878173 PMCID: PMC7023264 DOI: 10.3390/nano10010048] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/12/2019] [Accepted: 12/20/2019] [Indexed: 11/16/2022]
Abstract
Au@Cu2O core-shell nanocomposites (NCs) were synthesized by reducing copper nitrate on Au colloids with hydrazine. The thickness of the Cu2O shells could be varied by adjusting the molar ratios of Au: Cu. The results showed that the thickness of Cu2O shells played a crucial role in the catalytic activity of Au@Cu2O NCs under dark condition. The Au@Cu2O-Ag ternary NCs were further prepared by a simple galvanic replacement reaction method. Moreover, the surface features were revealed by TEM, XRD, XPS, and UV-Vis techniques. Compared with Au@Cu2O NCs, the ternary Au@Cu2O-Ag NCs had an excellent catalytic performance. The degradation of methyl orange (MO) catalyzed by Au@Cu2O-Ag NCs was achieved within 4 min. The mechanism study proved that the synergistic effects of Au@Cu2O-Ag NCs and sodium borohydride facilitated the degradation of MO. Hence, the designed Au@Cu2O-Ag NCs with high catalytic efficiency and good stability are expected to be the ideal environmental nanocatalysts for the degradation of dye pollutants in wastewater.
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Affiliation(s)
- Tong Wu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Yichuan Kou
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Hui Zheng
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Jianing Lu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | | | - Shuo Yang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (S.Y.); (C.G.)
| | - Chenzi Guo
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (S.Y.); (C.G.)
| | - Yang Liu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Ming Gao
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
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N-Doped Carbon-Coated ZnS with Sulfur-Vacancy Defect for Enhanced Photocatalytic Activity in the Visible Light Region. NANOMATERIALS 2019; 9:nano9121657. [PMID: 31766440 PMCID: PMC6956101 DOI: 10.3390/nano9121657] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/17/2019] [Accepted: 11/18/2019] [Indexed: 02/07/2023]
Abstract
In this work, N-doped carbon-coated ZnS with a sulfur-vacancy defect (ZnS@N-C) was performed for the visible-light-driven photodegradation of tetracycline hydrochloride (TCH). The obtained ZnS@N-C exhibited enhanced photocatalytic activity compared with ZnS for TCH removal. Among these ZnS@N-C composites, ZnS@N-C-3 with N-doped content of 3.01% (100 nm) presented the best visible-light photocatalytic activity and superior long-term photocatalytic stability after five cycle times for TCH removal in the visible light region. This may be ascribed to the interface between the N-doped carbon shell and ZnS with a sulfur-vacancy defect for efficient charge transfer and the restrained recombination of charge carriers. Electron spin resonance (ESR) results indicate that the ·O2‒ radical plays a crucial role in the enhanced photocatalytic activity of ZnS@N-C-3.
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Zheng X, Chen Q, Lv S, Fu X, Wen J, Liu X. Enhanced Visible-Light Photocatalytic Activity of Ag QDs Anchored on CeO 2 Nanosheets with a Carbon Coating. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1643. [PMID: 31752411 PMCID: PMC6915373 DOI: 10.3390/nano9111643] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 12/14/2022]
Abstract
Ag quantum dots (QDs) anchored on CeO2 nanosheets with a carbon coating (Ag/CeO2@C) (composites) were prepared via an in situ reduction approach for the photocatalytic degradation of Cr(VI) and tetracycline hydrochloride (TCH) in the visible-light region. The photocatalytic activity of Ag/CeO2@C was greatly affected by carbon content, Ag-doping content, Cr(VI) concentration, pH value, and inorganic ions. Enhanced photocatalytic activity was obtained by Ag/CeO2@C (compared to CeO2 and CeO2@C), of which 3-Ag/CeO2@C-2 with an Ag-doping content of 5.41% presented the best removal efficiency and the most superior stability after five cycles. ·O2- and ·OH radicals were crucial for the photocatalytic capacity of 3-Ag/CeO2@C-2. The combined effect of the surface plasma resonance (SPR) of Ag QDs, an electron trapper of carbon shells, and the redox activity of the Ce(III)/Ce(IV) coupling induced efficient charge transfer and separation, suppressing the recombination of electron-hole pairs.
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Affiliation(s)
- Xiaogang Zheng
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China;
- College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641100, China; (Q.C.); (X.F.)
| | - Qian Chen
- College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641100, China; (Q.C.); (X.F.)
| | - Sihao Lv
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China;
| | - Xiaojin Fu
- College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641100, China; (Q.C.); (X.F.)
| | - Jing Wen
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
| | - Xinhui Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;
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