1
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Chen X, Chu B, Gu Q, Li W, Lin R, Chu J, Peng Z, Lu J, Wu D. Inhibition of Fusarium graminearum growth and deoxynivalenol accumulation in barley malt by protonated g-C3N4/oxygen-doped g-C3N4 homojunction. Food Res Int 2022; 162:112025. [DOI: 10.1016/j.foodres.2022.112025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/29/2022] [Accepted: 10/02/2022] [Indexed: 11/27/2022]
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2
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Rana AG, Schwarze M, Tasbihi M, Sala X, García-Antón J, Minceva M. Influence of Cocatalysts (Ni, Co, and Cu) and Synthesis Method on the Photocatalytic Activity of Exfoliated Graphitic Carbon Nitride for Hydrogen Production. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12224006. [PMID: 36432291 PMCID: PMC9697847 DOI: 10.3390/nano12224006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 05/23/2023]
Abstract
Exfoliated graphitic carbon nitride (ex-g-CN) was synthesized and loaded with non-noble metals (Ni, Cu, and Co). The synthesized catalysts were tested for hydrogen production using a 300-W Xe lamp equipped with a 395 nm cutoff filter. A noncommercial double-walled quartz-glass reactor irradiated from the side was used with a 1 g/L catalyst in 20 mL of a 10 vol% triethanolamine aqueous solution. For preliminary screening, the metal-loaded ex-g-CN was synthesized using the incipient wetness impregnation method. The highest hydrogen production was observed on the Ni-loaded ex-g-CN, which was selected to assess the impact of the synthesis method on hydrogen production. Ni-loaded ex-g-CN was synthesized using different synthesis methods: incipient wetness impregnation, colloidal deposition, and precipitation deposition. The catalysts were characterized by X-ray powder diffraction, X-ray photoelectron spectroscopy, nitrogen adsorption using the Brunauer-Emmett-Teller method, and transmission electron microscopy. The Ni-loaded ex-g-CN synthesized using the colloidal method performed best with a hydrogen production rate of 43.6 µmol h-1 g-1. By contrast, the catalysts synthesized using the impregnation and precipitation methods were less active, with 28.2 and 10.1 µmol h-1 g-1, respectively. The hydrogen production performance of the suspended catalyst (440 µmol m-2 g-1) showed to be superior to that of the corresponding immobilized catalyst (236 µmol m-2 g-1).
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Affiliation(s)
- Adeem Ghaffar Rana
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, Maximus-Von-Imhof-Forum 2, 85354 Freising, Germany
- Department of Chemical, Polymer and Composite Materials Engineering, University of Engineering and Technology (UET), Lahore 39161, Pakistan
| | - Michael Schwarze
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Minoo Tasbihi
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Xavier Sala
- Departament de Química, Unitat de Química Inorgànica, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Jordi García-Antón
- Departament de Química, Unitat de Química Inorgànica, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Mirjana Minceva
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, Maximus-Von-Imhof-Forum 2, 85354 Freising, Germany
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3
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Improved polyhydroxybutyrate production by Cupriavidus necator and the photocatalyst graphitic carbon nitride from fructose under low light intensity. Int J Biol Macromol 2022; 203:526-534. [PMID: 35120931 DOI: 10.1016/j.ijbiomac.2022.01.179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/26/2022] [Accepted: 01/28/2022] [Indexed: 11/21/2022]
Abstract
The photocatalyst graphitic carbon nitride (g-C3N4) is known to photostimulate the production of the bioplastic polyhydroxybutyrate (PHB) by Cupriavidus necator. In previous studies, the combination of C. necator and g-C3N4 increased PHB yield from either an organic or inorganic carbon substrate under a light intensity of 4200 lx. Here, different parameters including light intensity, pH, temperature, nitrogen and carbon concentrations, aeration, and inoculum size were explored to maximize PHB production by hybrid photosynthesis from fructose and visible light. A g-C3N4/C. necator culture grown with a lower light intensity of 2100 lx, an inoculum size of 128.30 × 106 CFU ml-1, and constant aeration produced 7.16 g l-1 d-1 PHB with a product yield from fructose of 60.94%. Furthermore, the ratio of incident photons harvested by g-C3N4 converted into NADPH+H+ by C. necator for PHB production was improved to 19.74% after the process optimization. In comparison, the PHB production rate of a non-optimized g-C3N4/C. necator system exposed to 4200 lx was only 2.94 g l-1 d-1 with a product yield from fructose of 33.29%. These results demonstrate that hybrid photosynthesis productivity can be significantly augmented by decreasing light intensity and adjusting other parameters, which is promising for future bioproduction applications.
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4
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Li M, Pan Q, Xiao M, Xiong J. Highly dispersed NiS 2 quantum dots as a promising cocatalyst bridged by acetylene black significantly improved the photocatalytic H 2 evolution performance of g-C 3N 4 nanosheets. RSC Adv 2022; 12:2603-2611. [PMID: 35425292 PMCID: PMC8979214 DOI: 10.1039/d1ra07110f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 12/18/2021] [Indexed: 11/21/2022] Open
Abstract
In this work, ternary nanocomposite (CNs-AB/NiS2) as a novel efficient H2 evolution photocatalyst without the use of noble metals was successfully synthesized by depositing acetylene black (AB) and ultra-fine NiS2 nanoparticles on the surface of CNs (g-C3N4) through ultrasonic dispersion and chemical vapor deposition methods, respectively. It was revealed that the loaded AB and NiS2 nanoparticles have significantly improved the photocatalytic H2 evolution efficiency of the CNs by improving the photogenerated electron-hole pair separation, visible light absorption and hydrogen evolution kinetics. Besides acting as a cocatalyst, AB served as a conductive electron bridge between CNs and NiS2, which accelerated the effective transfer of electrons from CNs to NiS2 and improved the H2 evolution kinetics of the NiS2 cocatalyst. The H2 evolution experiments revealed that the ternary photocatalyst CNs-AB/NiS210 displayed a H2 evolution rate of up to 2434.85 μmoL g-1 h-1, which was a 1.41 times enhancement compared to that of the binary composite CNs-NiS210 and was 12.43 times higher than that of the pure CNs. Moreover, the ternary photocatalyst CNs-AB/NiS210 not only exhibited excellent photocatalytic activity and stability in the tests, but provided a novel idea for the development of high-efficiency catalysts free of noble metals as well.
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Affiliation(s)
- Miaomiao Li
- School of Physics and Telecommunication Engineering, South China Normal University Guangzhou 510631 Guangdong China +86 020 85216860
| | - Qilin Pan
- School of Physics and Telecommunication Engineering, South China Normal University Guangzhou 510631 Guangdong China +86 020 85216860
| | - Mucang Xiao
- School of Physics and Telecommunication Engineering, South China Normal University Guangzhou 510631 Guangdong China +86 020 85216860
| | - Jianwen Xiong
- School of Physics and Telecommunication Engineering, South China Normal University Guangzhou 510631 Guangdong China +86 020 85216860
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5
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Wang L, Geng X, Zhang L, Liu Z, Wang H, Bian Z. Effects of various alcohol sacrificial agents on hydrogen evolution based on CoS 2@SCN nanomaterials and its mechanism. CHEMOSPHERE 2022; 286:131558. [PMID: 34293564 DOI: 10.1016/j.chemosphere.2021.131558] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 06/29/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
Visible light induced photocatalysis converted solar energy to chemical energy in the form of hydrogen. g-C3N4 modified by thermal oxidation etching, doped S, and nonprecious metal cocatalyst CoS2 (CoS2@SCN) were used for photocatalytic hydrogen production. And then the charge transfer behavior and mechanism of various alcohol sacrificial agents on hydrogen evolution was analyzed by optical characterization, impedance analysis, Mott-Schottky, and photocurrent tests. The relationship between the structure and catalytic performance was also explored using characterization methods. The results showed that CoS2 significantly improved the light absorption of g-C3N4, and carrier migration and separation. And when the sacrificial agent was triethanolamine, the nanocomposite CoS2@SCN exhibited best catalytic performance with the highest hydrogen activity of 223.6 μmol g-1 h-1, the minimum volume in-phase charge transfer resistance with 55.19 Ω and the maximum photocurrent and photocurrent density with 5.5 μA cm-2 and 0.63 mA cm-2. The more negatively charged surface of organic alcohols were, the easier they were to react with holes, thus enhanced charge transfer and hydrogen production efficiency. This report provides guidance for the selection of hydrogen producing sacrificial agents and preparation of highly charge-efficient catalysts. And it also provides a theoretical basis for hydrogen production from wastewater and environmental remediation.
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Affiliation(s)
- Li Wang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Xinle Geng
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Lu Zhang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Zehong Liu
- College of Water Sciences, Beijing Normal University, Beijing, 100875, PR China
| | - Hui Wang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China.
| | - Zhaoyong Bian
- College of Water Sciences, Beijing Normal University, Beijing, 100875, PR China.
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6
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A Tubular g-C3N4 Based Composite Photocatalyst Combined with Co3O4 Nanoparticles for Photocatalytic Degradation of Diesel Oil. Catal Letters 2021. [DOI: 10.1007/s10562-021-03583-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Sun D, Mao J, Wang Z, Li H, Zhang L, Zhang W, Zhang Q, Li P. Inhibition of Aspergillus flavus growth and aflatoxins production on peanuts over α-Fe 2O 3 nanorods under sunlight irradiation. Int J Food Microbiol 2021; 353:109296. [PMID: 34147839 DOI: 10.1016/j.ijfoodmicro.2021.109296] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 05/19/2021] [Accepted: 06/05/2021] [Indexed: 11/29/2022]
Abstract
Peanut is an important resource of edible oil and digestible protein in daily life, which is rich in the nutriments and antioxidants such as vitamins, minerals and polyphenols. However, peanut is susceptible to the contamination of Aspergillus flavus (A. flavus), which can produce highly carcinogenic toxins that brings serious threats to human health and food safety. Exploring green and effective methods to control A. flavus is meaningful. Herein, a green and economical way to control A. flavus on peanuts was demonstrated. It was found that the growth of A. flavus hyphae and germination of its spores could be inhibited in the presence of α-Fe2O3 nanorods under sunlight irradiation according to the agar diffusion method, flat colony counting method and fluorescence-based live/dead test. The diameter of inhibition zone was 22.3 ± 0.2 mm and the inhibition rate of spores germination was about 60 ± 5%, when the concentration of α-Fe2O3 was 10 mg/mL for 7 h sunlight irradiation. Most important, α-Fe2O3 showed the photocatalytic inhibition of A. flavus on peanuts under sunlight irradiation with the inhibition rate of about 90 ± 5%, and the production of aflatoxin B1 and aflatoxin B2 were reduced by 90 ± 2% and 70 ± 3%, respectively. By comparing the fat contents, protein contents, acid value, peroxide value and antioxidative compositions of peanuts, it was found that there was no obvious effect on the quality of peanuts after inhibition treatment. The findings provide a green, safe and economical strategy to control A. flavus on peanuts, which may be as a promising way to be used in food and agro-food preservation.
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Affiliation(s)
- Di Sun
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Jin Mao
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China.
| | - Zhijian Wang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Hui Li
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Liangxiao Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Wen Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Qi Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Peiwu Li
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
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8
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Li S, Liu W, Zhao S, Li Y, Chen K. Enhanced Photocatalytic Performance of NiS
2
/
g
‐C
3
N
4
/SnS
2
by Improving the Charge Diffusion on Both Valence Band and Conduction Band of Carbon Nitride. ChemistrySelect 2021. [DOI: 10.1002/slct.202100892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Shengfu Li
- School of Materials Science & Engineering Beijing Institute of Technology 5 South Street, Zhongguancun, Haidian District Beijing 100081 China
| | - Wei Liu
- School of Materials Science & Engineering Beijing Institute of Technology 5 South Street, Zhongguancun, Haidian District Beijing 100081 China
| | - Siwei Zhao
- School of Materials Science & Engineering Beijing Institute of Technology 5 South Street, Zhongguancun, Haidian District Beijing 100081 China
| | - Yi Li
- School of Materials Science & Engineering Beijing Institute of Technology 5 South Street, Zhongguancun, Haidian District Beijing 100081 China
| | - Kun Chen
- School of Materials Science & Engineering Beijing Institute of Technology 5 South Street, Zhongguancun, Haidian District Beijing 100081 China
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9
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Bao E, Long S, Zhang S, Li H, Zhang W, Zou J, Xu Q. A Ternary Photocatalyst with Double Heterojunctionsfor Efficient Diesel Oil Degradation. ChemistrySelect 2021. [DOI: 10.1002/slct.202004782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Er‐Peng Bao
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P R China
| | - Songtao Long
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P R China
| | - Shuoqing Zhang
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P R China
| | - Huan Li
- School of Chemical Engineering and Advanced Materials The University of Adelaide Adelaide SA 5005 Australia
| | - Weiguo Zhang
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P R China
| | - Jijun Zou
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P R China
| | - Qiang Xu
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P R China
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10
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Li Y, Li X, Wang XT, Jian LJ, Abdallah NIM, Dong XF, Wang CW. P-n Heterostructured design of decahedral NiS/BiVO4 with efficient charge separation for enhanced photodegradation of organic dyes. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125565] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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11
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Wang L, Zan L. Facile One‐Pot Solvothermal Synthesis of Noble Metal‐Free NiS Modified In
2
S
3
‐Based Photocatalyst for Highly Efficient Visible‐Light‐Driven Cr
6+
Removal. ChemistrySelect 2020. [DOI: 10.1002/slct.202002228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Linjuan Wang
- College of Chemistry and Molecular Science Wuhan University No. 299, Bayi Road, Wuchang District Wuhan City Hubei Province China
| | - Ling Zan
- College of Chemistry and Molecular Science Wuhan University No. 299, Bayi Road, Wuchang District Wuhan City Hubei Province China
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12
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Liang Y, Yang Y, Xu K, Yu T, Yang Q, Shi P, Yuan C. Crystal facets engineering and rGO hybridizing for synergistic enhancement of photocatalytic activity of nickel disulfide. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121402. [PMID: 31668761 DOI: 10.1016/j.jhazmat.2019.121402] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/23/2019] [Accepted: 10/04/2019] [Indexed: 06/10/2023]
Abstract
Crystal facets engineering and graphene hybridizing have been proved to be effective means to improve the photocatalytic activities of semiconductor photocatalysts in recent years. However, most of these efforts are concentrated in metal oxides. In the present study, crystal facets effect on the photocatalytic activity of metal sulfide NiS2 was studied for the first time. It was found that the {111}-faceted NiS2 nanocrystals showed improved photocatalytic activity in the degradation of various typical pollutants in water compared with {100}-faceted NiS2 nanocrystals. Moreover, through hybridizing with rGO nanosheets, the photocatalytic activity of the {111}-faceted NiS2 nanocrystals can be further improved, resulting in the complete degradation of heavy metal hexavalent chromium and organic dyes. The photocatalytic mechanism was studied in detail through theory calculation and experimental characterization. It was found that both the surface energies of Ni-terminated and S-terminated {111} facets were much higher than that of {100} facets, indicating that {111} facets were more active. Besides, rGO hybridizing can realize the effective separation of photogenerated electrons and holes. The results provide important guidance for the further development of efficient metal sulfide photocatalysts.
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Affiliation(s)
- Yan Liang
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China
| | - Yong Yang
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China.
| | - Keng Xu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China
| | - Ting Yu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China
| | - Qing Yang
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China
| | - Pengyuan Shi
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China
| | - Cailei Yuan
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China.
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13
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Xu J, Zhu J, Niu J, Chen M, Yue J. Efficient and Stable Photocatalytic Hydrogen Evolution Activity of Multi-Heterojunction Composite Photocatalysts: CdS and NiS 2 Co-modified NaNbO 3 Nanocubes. Front Chem 2020; 7:880. [PMID: 32039136 PMCID: PMC6985095 DOI: 10.3389/fchem.2019.00880] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/06/2019] [Indexed: 11/16/2022] Open
Abstract
In this study, a NaNbO3/CdS/NiS2 ternary composite photocatalyst containing no precious metals was successfully prepared by a simple hydrothermal method. The prepared ternary photocatalyst has a significant improvement in photocatalytic performance of hydrogen production from water splitting under visible light irradiation. The best sample NCN40% hydrogen production rate is 4.698 mmol g−1 h−1, which is about 24.7 times that of pure CdS sample. In addition, the stability of the composite catalyst in the long-term photocatalytic hydrogen production cycle is also improved. The reason for the enhanced hydrogen production performance may be the optimization of the microstructure of the catalyst and the reduction of photogenerated electron-hole recombination. The construction of multi-heterojunctions (NaNbO3-CdS, CdS–NiS2, and NaNbO3-NiS2) helps to reduce the recombination of carriers. Furthermore, the in-situ-formed NiS2 nanoparticles can serve as active sites for hydrogen evolution. All of these factors induced the improved photocatalytic activity of the as-prepared ternary photocatalyst.
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Affiliation(s)
- Jingjing Xu
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China
| | - Jiawei Zhu
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China
| | - Junfeng Niu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, China
| | - Mindong Chen
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China
| | - Junpeng Yue
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China
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14
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Zhang S, Qian X, Yan J, Chen K, Huang J. Nickel-decorated g-C3N4 hollow spheres as an efficient photocatalyst for hydrogen evolution and oxidation of amines to imines. NEW J CHEM 2020. [DOI: 10.1039/d0nj01218a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Photocatalysts composed of earth-abundant elements are highly desired for photocatalytic hydrogen evolution as well as oxidation of amines to imines without the requirement of precious metals.
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Affiliation(s)
- Shishen Zhang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xiaobing Qian
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Junqiu Yan
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Kelong Chen
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Jianhua Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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15
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Huang S, Xu Y, Ge F, Tian D, Zhu X, Xie M, Xu H, Li H. Tailoring of crystalline structure of carbon nitride for superior photocatalytic hydrogen evolution. J Colloid Interface Sci 2019; 556:324-334. [PMID: 31454624 DOI: 10.1016/j.jcis.2019.08.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/31/2019] [Accepted: 08/18/2019] [Indexed: 10/26/2022]
Abstract
Light absorption and carrier transfer, are two sequential and complementary steps related to photocatalysis performance, whereas the collective integration of these two aspects into graphitic carbon nitride (g-C3N4) photocatalyst through polycondensation optimization have seldom been achieved. Herein, we report on tailoring the crystalline structure of g-C3N4 by avoiding the formation of incompletely reacted N-rich intermediates and selective breaking the hydrogen bonds between the layers of g-C3N4 simultaneously. The obtained layer plane ordered porous carbon nitride (LOP-CN) material shows efficient photocatalytic H2 generation performance. The highest H2 evolution rate achieved is 53.8 μmol under λ ≥ 400 nm light irradiation, which is 7.4 times higher than that of g-C3N4 prepared by convention thermal polycondensation. The substantially boosted photocatalytic activity is mainly ascribed to the efficient charge separation on long-range atomic order layer plane and the extended visible light harvesting ability. This work highlights the importance of crystalline structure tailoring in improving charge separation and light absorption of g-C3N4 photocatalyst for boosting its photocatalytic H2 evolution activity.
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Affiliation(s)
- Shuquan Huang
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China
| | - Yuanguo Xu
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China.
| | - Feiyue Ge
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China
| | - Dong Tian
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, PR China
| | - Xingwang Zhu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Meng Xie
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Hui Xu
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China
| | - Huaming Li
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China.
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Wang H, Mao J, Zhang Z, Zhang Q, Zhang L, Zhang W, Li P. Photocatalytic degradation of deoxynivalenol over dendritic-like α-Fe₂O₃ under visible light irradiation. Toxins (Basel) 2019; 11:E105. [PMID: 30754708 PMCID: PMC6409584 DOI: 10.3390/toxins11020105] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/06/2019] [Accepted: 02/08/2019] [Indexed: 01/14/2023] Open
Abstract
Deoxynivalenol (DON) is a secondary metabolite produced by Fusarium, which is a trichothecene mycotoxin. As the main mycotoxin with high toxicity, wheat, barley, corn and their products are susceptible to contamination of DON. Due to the stability of this mycotoxin, traditional methods for DON reduction often require a strong oxidant, high temperature and high pressure with more energy consumption. Therefore, exploring green, efficient and environmentally friendly ways to degrade or reduce DON is a meaningful and challenging issue. Herein, a dendritic-like α-Fe₂O₃ was successfully prepared using a facile hydrothermal synthesis method at 160 °C, which was systematically characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). It was found that dendritic-like α-Fe₂O₃ showed superior activity for the photocatalytic degradation of DON in aqueous solution under visible light irradiation (λ > 420 nm) and 90.3% DON (initial concentration of 4.0 μg/mL) could be reduced in 2 h. Most of all, the main possible intermediate products were proposed through high performance liquid chromatography-mass spectrometry (HPLC-MS) after the photocatalytic treatment. This work not only provides a green and promising way to mitigate mycotoxin contamination but also may present useful information for future studies.
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Affiliation(s)
- Huiting Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (H.W.); (J.M.); (Z.Z.); (Q.Z.); (L.Z.); (W.Z.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Jin Mao
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (H.W.); (J.M.); (Z.Z.); (Q.Z.); (L.Z.); (W.Z.)
- Key Laboratory of Detection for Biotoxins, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China
| | - Zhaowei Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (H.W.); (J.M.); (Z.Z.); (Q.Z.); (L.Z.); (W.Z.)
- Key Laboratory of Detection for Biotoxins, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China
| | - Qi Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (H.W.); (J.M.); (Z.Z.); (Q.Z.); (L.Z.); (W.Z.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Key Laboratory of Detection for Biotoxins, Ministry of Agriculture, Wuhan 430062, China
- Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China
| | - Liangxiao Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (H.W.); (J.M.); (Z.Z.); (Q.Z.); (L.Z.); (W.Z.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China
| | - Wen Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (H.W.); (J.M.); (Z.Z.); (Q.Z.); (L.Z.); (W.Z.)
- Key Laboratory of Detection for Biotoxins, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China
- Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China
| | - Peiwu Li
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (H.W.); (J.M.); (Z.Z.); (Q.Z.); (L.Z.); (W.Z.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Key Laboratory of Detection for Biotoxins, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China
- Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China
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Wu P, Hu HY, Xie N, Wang C, Wu F, Pan M, Li HF, Wang XD, Zeng Z, Deng S, Dai GP. A N-doped graphene–cobalt nickel sulfide aerogel as a sulfur host for lithium–sulfur batteries. RSC Adv 2019; 9:32247-32257. [PMID: 35530806 PMCID: PMC9072958 DOI: 10.1039/c9ra05202j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/24/2019] [Indexed: 11/26/2022] Open
Abstract
Herein, three-dimensional (3D) N-doped reduced graphene oxide (N-rGO) nanosheets were decorated with a uniform distribution of Co–Ni–S (CNS) nanoparticles to form the CNS/N-rGO composite as a sulfur host material for lithium–sulfur batteries. The CNS nanoparticles and N in CNS/N-rGO strongly interact with polysulfides, whereas graphene, as a conductive network, can improve its electrical conductivity. A CNS/N-rGO/sulfur composite cathode was prepared via the sulfur melting diffusion method. The electrochemical study showed that the CNS/N-rGO/sulfur cathode delivered an initial discharge capacity of 1430 mA h g−1 at a current density of 0.1C. Moreover, it retained a specific capacity of 685 mA h g−1 after 300 cycles at 0.5C with a coulombic efficiency of 98%, which was better than that of commercial rGO. This composite was used as a sulfur cathode for a lithium–sulfur battery, exhibiting excellent rate capability and remarkable performance in terms of long cycling stability. Herein, three-dimensional (3D) N-doped reduced graphene oxide (N-rGO) nanosheets were decorated with a uniform distribution of Co–Ni–S (CNS) nanoparticles to form the CNS/N-rGO composite as a sulfur host material for lithium–sulfur batteries.![]()
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