1
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Zuo S, Wang Y, Wan J. Enhanced peroxymonosulfate activation for emerging contaminant degradation via defect-engineered interfacial electric field in FeNC. J Colloid Interface Sci 2024; 678:713-721. [PMID: 39216398 DOI: 10.1016/j.jcis.2024.08.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 08/12/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
Peroxymonosulfate (PMS) activation technology has important application value in treating emerging contaminant (ECs), but it still faces challenges in achieving efficient electron transfer and metal valence cycling. In this study, the interfacial electric field characteristics of FeNC catalysts were adjusted by introducing NC defects to affect the electron transfer process, thereby enhancing the catalytic performance of PMS. It is found that in the FeNC structure, the shift of the charge generates an interfacial electric field, which can promote the directional transfer of electrons. Through quantitative structure-activity relationship (QSAR) analysis, it was confirmed that the defect played a decisive role in regulating the interfacial electric field and improving the catalytic reaction efficiency. The interfacial electric field-mediated superexchange interaction realizes the electron donor effect of organic pollutants and the effective electron transfer between the Fe site, accelerates the electron cycling of the Fe site, and realizes the rapid and stable catalysis of PMS. The increase of the occupancy state distribution of d orbitals near the Fermi level provides favorable conditions for electron transitions and catalytic activation of PMS. ECs can be converted into environmentally friendly, non-toxic and harmless substances through. This defect-controlled interface electric field strategy realizes rapid electron directional transfer, which provides a new solution for improving the catalytic efficiency of PMS and the safe treatment of ECs in water.
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Affiliation(s)
- Shiyu Zuo
- School of Environment and Energy, South China University of Technology, Guangzhou, China
| | - Yan Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China.
| | - Jinquan Wan
- School of Environment and Energy, South China University of Technology, Guangzhou, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
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2
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Xue X, Zhang J, Li M, Ao C, Wang Q, Zhao J, Zhang W, Lu C. Facile fabrication of three-dimensional nanofibrous foams of cellulose@g-C 3N 4@Cu 2O with superior visible-light photocatalytic performance. Carbohydr Polym 2023; 303:120455. [PMID: 36657843 DOI: 10.1016/j.carbpol.2022.120455] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/27/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
In this work, a unique three-dimensional nanofibrous foam of cellulose@g-C3N4@Cu2O was prepared via electrospinning followed by a foaming process. A cellulose solution in DMAc/LiCl containing g-C3N4 and CuSO4 was applied for electrospinning, while aqueous alkali was used as the coagulation bath. The solidification of electrospun cellulose/g-C3N4 nanofibers would be accompanied with in-situ formation of Cu(OH)2 nanoparticles. Interestingly, the hydrogen gas (H2) generated from NaBH4 could transform the two-dimensional membrane into a three-dimensional foam, leading to the increased specific surface area and porosity of the material. Meanwhile, the Cu(OH)2 nanoparticles attached on the electrospun nanofibers were reduced to Cu2O to form a p-n heterostructure between Cu2O and g-C3N4. The as-prepared cellulose@g-C3N4@Cu2O foam exhibited a high degradation efficiency (99.5 %) for the dye of Congo Red under visible light radiation. And ·O2- was discovered to be the dominant reactive species responsive for dye degradation. Moreover, the cellulose@g-C3N4@Cu2O could maintain its initial degradation efficiency even after seven cycles of reuse, suggesting the excellent stability and cycling performance.
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Affiliation(s)
- Xiaolin Xue
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Jian Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Mei Li
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Chenghong Ao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Qunhao Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Jiangqi Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China.
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China.
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3
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Zheng MW, Yang SJ, Pu YC, Liu SH. Mechanisms of biochar enhanced Cu 2O photocatalysts in the visible-light photodegradation of sulfamethoxazole. CHEMOSPHERE 2022; 307:135984. [PMID: 35964722 DOI: 10.1016/j.chemosphere.2022.135984] [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: 05/20/2022] [Revised: 07/16/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Cu2O nanoparticles are decorated with biochars derived from spent coffee grounds (denoted as Cu2O/SCG) and applied as visible-light-active photocatalysts in the sulfamethoxazole (SMX) degradation. The physicochemical properties of Cu2O/SCG are identified by various spectral analysis, electrochemical and photochemical techniques. As a result, the Cu2O/SCG exhibits the higher removal efficiency of SMX than the pristine Cu2O under visible light irradiation. We can observe that Cu2O could be incorporated onto the SCG biochars with rich oxygen vacancies/adsorbed hydroxyl groups. In addition, the Cu2O/SCG has the lower charge transfer resistance, faster interfacial electron transfer kinetics, decreased recombination of charge carriers and superior absorbance of visible light. The construction of band diagrams for Cu2O/SCG and pristine Cu2O via UV-vis spectra and Mott-Schottky plots suggest that the band energy shifts and higher carrier density of Cu2O/SCG may be responsible for the photocatalytic activity enhancements. From the radical scavenger experiments and electron paramagnetic resonance spectra, the aforementioned energy shifts could decrease the energy requirement of transferring photoinduced electrons to the potential for the formation of active superoxide radicals (·O2-) via one and two-electron reduction routes in the photocatalytic reaction. A proposed degradation pathway shows that ·O2- and h+ are two main active species which can efficiently degrade SMX into reaction intermediates by oxidation, hydroxylation, and ring opening. This research demonstrates the alternative replacement of conventional carbon materials for the preparation of biochar-assisted Cu2O photocatalysts which are applied in the environmental decontamination by using solar energy.
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Affiliation(s)
- Meng-Wei Zheng
- Department of Environmental Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Shan-Jen Yang
- Department of Materials Science, National University of Tainan, Tainan, 70005, Taiwan
| | - Ying-Chih Pu
- Department of Materials Science, National University of Tainan, Tainan, 70005, Taiwan
| | - Shou-Heng Liu
- Department of Environmental Engineering, National Cheng Kung University, Tainan, 70101, Taiwan.
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4
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Sun J, Wang L, Lu S, Wang Z, Chen M, Liang W, Lin X, Lin X. Environmentally Friendly g-C 3N 4/Sepiolite Fiber for Enhanced Degradation of Dye under Visible Light. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082464. [PMID: 35458658 PMCID: PMC9030453 DOI: 10.3390/molecules27082464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 03/29/2022] [Accepted: 04/07/2022] [Indexed: 11/16/2022]
Abstract
Herein, novel visible light active graphitic carbon nitride (g-C3N4)/sepiolite fiber (CN/SS) composites were fabricated via a facile calcination route, exploiting melamine and thiourea as precursors, and sepiolite fiber as support, for efficient degradation of organic dye methylene blue (MB). The as-prepared CN/SS composites were characterized by various characterization techniques based on structural and microstructural analyses. The effects of CN loading amount, catalyst dosage and initial concentration of dye on the removal rate of dye under visible light were systematically studied. The removal rate of MB was as high as 99.5%, 99.6% and 99.6% over the composites when the CN loading amount, catalyst dosage and initial concentration of dye were 20% (mass percent), 0.1 g, and 15 mg/L in 120 min, respectively. The active species scavenging experiments and electron paramagnetic resonance (EPR) measurement indicated that the holes (h+), hydroxyl radical (·OH) and superoxide radicals (·O2−) were the main active species. This study provides for the design of low-cost, environmentally friendly and highly efficient catalysts for the removal of organic dye.
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Affiliation(s)
- Jiayue Sun
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Ministry of Education, Guilin 541004, China; (J.S.); (L.W.); (S.L.)
- School of Environment and Resource, Guangxi Normal University, Guilin 541004, China
| | - Lianying Wang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Ministry of Education, Guilin 541004, China; (J.S.); (L.W.); (S.L.)
- School of Environment and Resource, Guangxi Normal University, Guilin 541004, China
| | - Simei Lu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Ministry of Education, Guilin 541004, China; (J.S.); (L.W.); (S.L.)
- School of Environment and Resource, Guangxi Normal University, Guilin 541004, China
| | - Zhuoyuan Wang
- School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, China;
| | - Menglin Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Ministry of Education, Guilin 541004, China; (J.S.); (L.W.); (S.L.)
- School of Environment and Resource, Guangxi Normal University, Guilin 541004, China
- Correspondence: (M.C.); (W.L.); (X.L.); (X.L.)
| | - Weixia Liang
- School of Medicine and Health, Guangxi Vocational & Technical Institute of Industry, Nanning 530001, China
- Correspondence: (M.C.); (W.L.); (X.L.); (X.L.)
| | - Xiu Lin
- Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin 541004, China
- Hospital, Guilin University of Technology, Guilin 541004, China
- Department of Public Health, International College, Krirk University, Bangkok 10220, Thailand
- Correspondence: (M.C.); (W.L.); (X.L.); (X.L.)
| | - Xiangfeng Lin
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Ministry of Education, Guilin 541004, China; (J.S.); (L.W.); (S.L.)
- School of Environment and Resource, Guangxi Normal University, Guilin 541004, China
- Correspondence: (M.C.); (W.L.); (X.L.); (X.L.)
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5
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Van KN, Huu HT, Nguyen Thi VN, Le Thi TL, Truong DH, Truong TT, Dao NN, Vo V, Tran DL, Vasseghian Y. Facile construction of S-scheme SnO 2/g-C 3N 4 photocatalyst for improved photoactivity. CHEMOSPHERE 2022; 289:133120. [PMID: 34863724 DOI: 10.1016/j.chemosphere.2021.133120] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/10/2021] [Accepted: 11/27/2021] [Indexed: 06/13/2023]
Abstract
The SnO2/g-C3N4 composites were fabricated via an annealing mixture of g-C3N4 and SnO2, which were obtained from calcinating melamine and hydrothermal treatment of SnCl4 solution, respectively. The photocatalytic properties of g-C3N4/SnO2 were studied over the degradation of Rhodamine B (RhB) under visible light, which exhibits a significantly improved photocatalytic activity compared to the single components, g-C3N4 and SnO2. The enhancement in photocatalytic activity of SnO2/g-C3N4 could be described by the S-scheme pathway, in which the effective charge transfer between components is demonstrated toward the suppression in recombination of the photogenerated electron-hole pairs within redox potential conservation. Besides, a new criterion, photochemical space-time yield, was applied to evaluate the photocatalytic performance of our samples.
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Affiliation(s)
- Kim Nguyen Van
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam.
| | - Ha Tran Huu
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam
| | - Viet Nga Nguyen Thi
- Faculty of Education, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam
| | - Thanh Lieu Le Thi
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam
| | | | - Thanh Tam Truong
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam
| | - Ngoc Nhiem Dao
- Institute of Materials Science, Vietnam Academy of Science and Technology, 100000, Viet Nam
| | - Vien Vo
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam.
| | - Dai Lam Tran
- Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, 11355, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Viet Nam.
| | - Yasser Vasseghian
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran.
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6
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Zuo S, Li D, Guan Z, Yang F, Xu H, Xia D, Wan J. Tailored d-Band Facilitating in Fe Gradient Doping CuO Boosts Peroxymonosulfate Activation for High Efficiency Generation and Release of Singlet Oxygen. ACS APPLIED MATERIALS & INTERFACES 2021; 13:49982-49992. [PMID: 34636557 DOI: 10.1021/acsami.1c15061] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In the field of heterogeneous catalysis, limitations of the surface reaction process inevitably make improving the catalytic efficiency to remove pollutants in water a major challenge. Here, we report a unique structure of Fe surface-gradient-doped CuO that improves the overall catalytic processes of adsorption, electron transfer, and desorption. Interestingly, gradient doping leads to an imbalanced charge distribution in the crystal structure, thereby promoting the adsorption and electron transport efficiency of peroxymonosulfate (PMS). The orbital hybridization of Fe also improves the electronic activity. More importantly, the occupied d-orbital distribution is closer to the lower energy level, which improves the desorption of the reaction intermediate (1O2). As a result, the production and desorption of 1O2 have been improved, resulting in excellent BPA degradation ability (kinetic rate increased by 67.3 times). Two-dimensional infrared correlation spectroscopy is used to better understand the doping process and catalytic mechanism of Fe-CuO. Fe-O changes before Cu-O and is more active. The Fe-required active sites, active species intensity, and kinetic reaction rates show a good correlation. This research provides a scientific basis for expanding the purification of toxic organic pollutants in complex water environments by heterogeneous catalytic oxidation.
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Affiliation(s)
- Shiyu Zuo
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, P. R. China
| | - Dongya Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, P. R. China
- Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan 430073, P. R. China
| | - Zeyu Guan
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, P. R. China
| | - Fan Yang
- School of Electronic and Electrical Engineering, Wuhan Textile University, Wuhan 430073, P. R. China
| | - Haiming Xu
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, P. R. China
| | - Dongsheng Xia
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, P. R. China
| | - Jinquan Wan
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
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7
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Efficient peroxymonosulfate nonradical activity of Zn-Mn-Al2O3@g-C3N4 via synergism of Zn, Mn doping and g-C3N4 composite. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118965] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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8
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Zuo S, Xia D, Guan Z, Yang F, Zhang B, Xu H, Huang M, Guo X, Li D. The polarized electric field on Fe2O3/g-C3N4 for efficient peroxymonosulfate activation: A synergy of 1O2, electron transfer and pollutant oxidation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118717] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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9
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Guan Z, Zuo S, Yang F, Zhang B, Xu H, Xia D, Huang M, Li D. The polarized electric field on Fe-N-C-S promotes non-radical process of peroxymonosulfate degrade diclofenac sodium. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Zuo S, Li D, Yang F, Xu H, Huang M, Guan Z, Xia D. Copper oxide/graphitic carbon nitride composite for bisphenol a degradation by boosted peroxymonosulfate activation: Mechanism of Cu-O covalency governs. J Colloid Interface Sci 2021; 603:85-93. [PMID: 34186413 DOI: 10.1016/j.jcis.2021.06.099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/13/2021] [Accepted: 06/15/2021] [Indexed: 10/21/2022]
Abstract
Surface structure can govern heterogeneous catalysis, resulting in its critical role in nonradical reactions. Here, we explored whether Cu-O covalency plays a critical role in controlling the inherent properties of copper oxide/graphitic carbon nitride (CuO-CN). Experiments and theoretical calculations show that, in contrast to the traditional concept of low-valent metal control activity, surface modification enlarges Cu-O covalency, and high-valent copper species at the surface easily bind peroxymonosulfate (PMS, (HSO5-)) anions. Therefore, optimized CuO-CN corresponds to a 14.8-fold higher kinetic reaction rate (0.10392 min-1) for PMS activation and pollutant degradation over those of unoptimized CuO-CN. Based on two-dimensional Fourier transform infrared correlation spectroscopy (2D-FT-IR-COS), Cu-O was determined to be the main active site. Cu-O is more active than other groups and acts before other groups. Benefiting from this electron transfer mechanism, CuO-CN shows good environmental tolerance (pH, anions, humic acid and actual water bodies such as tap water and groundwater). The established empirical kinetic model shows a strong linear correlation with the experimental kinetic reaction rate (> 0.94). CuO-CN/PMS can degrade organic pollutants efficiently for up to 30 days in a filter reactor. This work provides an understanding of the key role of the surface electronic structure in the nonradical activation of PMS and may provide support for improving the design of PMS catalysts.
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Affiliation(s)
- Shiyu Zuo
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China
| | - Dongya Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China; Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan 430073, PR China.
| | - Fan Yang
- School of Electronic and Electrical Engineering, Wuhan Textile University, Wuhan 430073, PR China
| | - Haiming Xu
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China
| | - Mingzhi Huang
- School of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Zeyu Guan
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China.
| | - Dongsheng Xia
- Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan 430073, PR China
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11
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Guo Y, Zhou C, Fang L, Liu Z, Li W, Yang M. Effect of pH on the Catalytic Degradation of Rhodamine B by Synthesized CDs/g-C 3N 4/Cu x O Composites. ACS OMEGA 2021; 6:8119-8130. [PMID: 33817471 PMCID: PMC8014920 DOI: 10.1021/acsomega.0c05915] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 03/03/2021] [Indexed: 05/08/2023]
Abstract
The narrow pH range of Fenton oxidation restricts its applicability in water pollution treatment. In this work, a CDs/g-C3N4/Cu x O composite was synthesized via a stepwise thermal polymerization method using melamine, citric acid, and Cu2O. Adding H2O2 to form a heterogeneous Fenton system can degrade Rhodamine B (Rh B) under dark conditions. The synthesized composite was characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and N2 adsorption/desorption isotherms. The results showed that CDs, Cu2O, and CuO were successfully loaded on the surface of g-C3N4. By evaluating the catalytic activity on Rh B degradation in the presence of H2O2, the optimal contents of citric acid and Cu2O were 3 and 2.8%, respectively. In contrast to a typical Fenton reaction, which is favored in acidic conditions, the catalytic degradation of Rh B showed a strong pH-dependent relation when the pH is raised from 3 to 11, with the removal from 45 to 96%. Moreover, the recyclability of the composite was evaluated by the removal ratio of Rhodamine B (Rh B) after each cycle. Interestingly, recyclability is also favored in alkaline conditions and shows the best performance at pH 10, with the removal ratio of Rh B kept at 95% even after eight cycles. Through free radical trapping experiments and electron spin resonance (ESR) analysis, the hydroxyl radical (•OH) and the superoxide radical (•O2 -) were identified as the main reactive species. Overall, a mechanism is proposed, explaining that the higher catalytic performance in the basic solution is due to the dominating surface reaction and favored in alkaline conditions.
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Affiliation(s)
- Yulian Guo
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Chunsun Zhou
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Lijuan Fang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Zhongda Liu
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Wen Li
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Miao Yang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
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12
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Zhang K, Ai Z, Huang M, Shi D, Shao Y, Hao X, Zhang B, Wu Y. Type II cuprous oxide/graphitic carbon nitride p-n heterojunctions for enhanced photocatalytic nitrogen fixation. J Catal 2021. [DOI: 10.1016/j.jcat.2021.01.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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13
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The p and d hybridization interaction in Fe-N-C boosts peroxymonosulfate non-radical activation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118025] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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14
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Magnetite/graphite carbon nitride composite for peroxymonosulfate non-radical activation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125895] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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15
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Zuo S, Xia D, Guan Z, Yang F, Cheng S, Xu H, Wan R, Li D, Liu M. Dual-functional CuO/CN for highly efficient solar evaporation and water purification. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117611] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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UiO-66-NH2/Cu2O composite as an enhanced visible light photocatalyst for decomposition of organic pollutants. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112625] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Jiang H, Li Y, Wang D, Hong X, Liang B. Recent Advances in Heteroatom Doped Graphitic Carbon Nitride (g-C3N4) and g-C3N4/Metal Oxide Composite Photocatalysts. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200309151648] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Industrial wastewater contains abundant organic dyes, antibiotics, pesticides,
chemical fertilizers or heavy metal ions, which seriously deteriorate the ecological environment.
Among the practical techniques for reducing water pollution, photocatalysis is a
kind of sustainable solar energy conversion technique for removing organic contaminants.
In this review, the advances in the preparation, modification, and doping of graphitic carbon
nitride (g-C3N4), including non-metal doping, metal doping, dual- or tri-doping, are
introduced firstly. Then, we systematically reviewed the recent progress of g-C3N4/metal
oxide composite photocatalysts, including a g-C3N4/n-type metal oxide, such as TiO2,
ZnO, SnO2, WO3, FexOy, CeO2, V2O5, MoO3, MnO2, Nb2O5, In2O3, and a g-C3N4/p-type
metal oxide, such as Co3O4, Bi2O3, NiO and Cu2O. At last, we summarized the design
principles for preparing heteroatom doped g-C3N4 and g-C3N4/metal oxide composites, and
forecast the promising research directions. The main objective is to provide a guideline for designing highperformance
heteroatom doped g-C3N4 and g-C3N4/metal oxide photocatalysts.
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Affiliation(s)
- Haiyan Jiang
- School of Environmental Science and Engineering, Fuxin 123000, China
| | - Yang Li
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, China
| | - Daohan Wang
- School of Environmental Science and Engineering, Fuxin 123000, China
| | - Xiaodong Hong
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, China
| | - Bing Liang
- School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
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18
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Ma Q, Hu X, Liu N, Sharma A, Zhang C, Kawazoe N, Chen G, Yang Y. Polyethylene glycol (PEG)-modified Ag/Ag 2O/Ag 3PO 4/Bi 2WO 6 photocatalyst film with enhanced efficiency and stability under solar light. J Colloid Interface Sci 2020; 569:101-113. [PMID: 32105898 DOI: 10.1016/j.jcis.2020.02.064] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/11/2020] [Accepted: 02/15/2020] [Indexed: 01/14/2023]
Abstract
Bi2WO6 photocatalyst possesses great photocatalytic properties, modification with Ag, Ag2O, and Ag3PO4 further improve its photocatalytic activity. Photocatalyst utilized as suspended powders in wastewater treatment imposes restrictions for practical application. Therefore, the design and fabrication of photocatalyst film with high efficiency and stability are crucial for practical application. In this study, polyethylene glycol (PEG) modified AP-BWO (A: Ag, Ag2O; P: Ag3PO4; BWO: Bi2WO6) photocatalyst film coated on glass substrate was firstly synthesized with excellent photocatalytic activity and stability. Bi2WO6based films were modified with different PEG molecular weight, dosage and coating layers, followed by characteristic analysis (SEM, TEM, XPS, UVvis, PL, and photocurrent density) and photodegradation test. Photodegradation showed that 2-layered of 12 g L-1 PEG2000 modified AP-BWO film exhibited the highest photocatalytic activity. XPS and TEM indicated that PEG2000-AP-BWO film was fabricated successfully. SEM and UV-vis denoted the photocatalyst film showed small particle size and strong visible-light absorption. Furthermore, PL and photocurrent density confirmed its low recombination and fast charge separation of electronhole pairs. The photocatalytic films showed high activity and stability in both 10-cycle repeatability experiments and tandem-type photocatalytic recycle system. Therefore, PEG2000-AP-BWO film with enhanced photocatalytic performance and stability was a promising alternative for wastewater treatment.
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Affiliation(s)
- Qiansu Ma
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Xiaohong Hu
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Na Liu
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Aditya Sharma
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Cheng Zhang
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Naoki Kawazoe
- Research Centre for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Guoping Chen
- Research Centre for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yingnan Yang
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan.
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19
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Verma A, Kumar S, Chang WK, Fu YP. Bi-functional Ag-Cu xO/g-C 3N 4 hybrid catalysts for the reduction of 4-nitrophenol and the electrochemical detection of dopamine. Dalton Trans 2020; 49:625-637. [PMID: 31859301 DOI: 10.1039/c9dt04309h] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The immense need to build highly efficient catalysts has always been at the forefront of environmental remediation research. Herein, we have synthesized dual-phase copper oxide containing Cu2O and CuO originating from the same reaction using hexamethyltetramine (HMT). Simultaneously, we coupled it with g-C3N4 (g-CN), constructing a triple synergetic heterojunction, which is reported significantly less often in the literature. Hydrothermal reactions led to the formation of various catalysts, namely, Ag-Cu2O-CuO-gCN (ACCG), Ag-CuO-gCN (ACG), Ag-Cu2O-CuO (ACC) and Ag-CuO (AC), which were thoroughly characterized via XRD and FESEM to gain structural, crystallographic and morphological insights. We clearly observed the pure phase formation of the catalysts and the development of sheet-like CuO and truncated octahedrons of Cu2O fused together within the g-CN framework. Also, XPS studies revealed the presence of copper in two different oxidation states, namely, Cu2+ and Cu+. BET analysis was performed to analyze the surface area and pore volume of the catalysts, which play very significant roles in catalytic reduction. The catalytic efficiencies of the catalysts were evaluated via the reduction of 100 ppm 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) without using any light irradiation. The most efficient catalyst was ACCG, revealing the reduction of 4-NP in 4 minutes. Both Cu2O and g-CN played significant roles in reduction, following zero-order kinetics, unlike that which is often reported in the literature. We also evaluated the catalytic reduction with different concentrations of 4-NP and tuning the catalyst amount as well. A mechanism was postulated based on the XRD results of the post-catalytic reduction catalyst. The ACCG catalyst was also successfully tested as an effective dopamine sensor. The GC/ACCG electrode exhibited oxidation peak current density of 0.28 mA cm-2, which was much higher than those of the other catalysts. This unique combination of pure phase materials to form a composite as an effective catalyst as well as a sensor is an exclusive effort towards environmental remediation.
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Affiliation(s)
- Atul Verma
- Department of Materials Science and Engineering, National Dong Hwa University, Hualien 97401, Taiwan.
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20
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Quantitative investigation into the enhancing utilization efficiency of H2O2 catalyzed by FeOCl under visible light. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112072] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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21
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Liu H, Zhu X, Han R, Dai Y, Sun Y, Lin Y, Gao D, Wang X, Luo C. Study on the internal electric field in the Cu2O/g-C3N4 p–n heterojunction structure for enhancing visible light photocatalytic activity. NEW J CHEM 2020. [DOI: 10.1039/c9nj05737d] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Cu2O/g-C3N4 p–n heterojunction efficiently removes tetracycline in the presence of a built-in electric field.
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Affiliation(s)
- Hao Liu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Xiaodong Zhu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Rui Han
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Yuxue Dai
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Yuanling Sun
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Yanna Lin
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Dandan Gao
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Xueying Wang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Chuannan Luo
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
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22
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Liu W, Zhou J, Hu Z. Nano-sized g-C3N4 thin layer @ CeO2 sphere core-shell photocatalyst combined with H2O2 to degrade doxycycline in water under visible light irradiation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.06.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Majeed Khan MA, Khan W, Kumar A, Alhazaa AN. Synthesis of nanosized Cu2O decorated single-walled carbon nanotubes and their superior catalytic activity. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123933] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Li Y, Chen X, Li L. Facile thermal exfoliation of Cu sheets towards the CuO/Cu 2O heterojunction: a cost-effective photocatalyst with visible-light response for promising sustainable applications. RSC Adv 2019; 9:33395-33402. [PMID: 35529164 PMCID: PMC9073361 DOI: 10.1039/c9ra06837f] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/01/2019] [Indexed: 11/21/2022] Open
Abstract
Unlike semiconductors, metals, especially the Cu element, usually show preeminent ductility and thermal expansivity; accordingly, herein, we report thermal treatment of a commercial copper sheet in air to obtain a black mass, i.e. CuO/Cu2O with a heterojunction, which has been proven to be a photocatalyst. Rapid cooling of the hot sheet detached/knocked off the oxidized layers from the sheet as a powder. The extent of the formation of copper oxides was determined by electrochemical impedance spectroscopy and transient photocurrent responses; in addition, other physical methods for the characterization of the catalyst were performed, and the catalyst exhibited applications in the mineralization of the rhodamine B (RhB) dye, a potential pollutant in water bodies. Moreover, the well-matched band structures of CuO/Cu2O manifested that CuO and Cu2O could serve as reduction sites and hole oxygen sites to generate the ·O2 - and ·OH species, respectively, which were subsequently affirmed by the DMPO electron spin resonance technique. In this study, we proposed a novel perspective towards the design of heterogeneous photocatalysts for organic pollutant treatment through a convenient solid-phase synthesis rather than a complicated liquid-phase synthesis. In addition to this, the resultant CuO/Cu2O photocatalyst proposed herein might inspire the researchers to focus on the preparation of more cost-effective photocatalysts for commercialization rather than complicated nanocomposites for pure theoretical research.
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Affiliation(s)
- Yixuan Li
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar Heilongjiang 161006 P. R. China
| | - Xi Chen
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar Heilongjiang 161006 P. R. China
- College of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin Heilongjiang 150090 P. R. China
| | - Li Li
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar Heilongjiang 161006 P. R. China
- College of Materials Science and Engineering, Qiqihar University Qiqihar Heilongjiang 161006 P. R. China
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25
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Sun Z, Fang W, Zhao L, Chen H, He X, Li W, Tian P, Huang Z. g-C 3N 4 foam/Cu 2O QDs with excellent CO 2 adsorption and synergistic catalytic effect for photocatalytic CO 2 reduction. ENVIRONMENT INTERNATIONAL 2019; 130:104898. [PMID: 31228786 DOI: 10.1016/j.envint.2019.06.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/15/2019] [Accepted: 06/04/2019] [Indexed: 06/09/2023]
Abstract
A unique heterostructure is developed based on a 3D photoactive semiconductor and a 0D Cu2O QDs for superb photocatalytic reduction CO2 into CO. It reported a novel and simple method to prepare a 3D g-C3N4 foam with micron-sized porous structures using ultrastable foam as a soft template for the first time. Moreover, Cu2O QDs are loaded onto 3D g-C3N4 foam through a simple photodeposition strategy. Systematically characterization demonstrated that g-C3N4 foam not only act as an excellent carrier for Cu2O QDs, but also greatly improve the photocatalytic performance by enhancing CO2 adsorption and gas transfer. Simultaneously, the rationally designed g-C3N4 foam/Cu2O QDs exhibited notablely enhancement in photocatalytic performance with 3.9 times and 11 times higher than that of g-C3N4 foam and bulk g-C3N4 powder. The excellent photocatalytic activity can be attributed to the unique porous structure and the synergistic effect between g-C3N4 foam and Cu2O QDs, which can speed up the transfer of charge carriers and urged the cumulation of photo-generated electrons on the Cu2O QDs. Our work provides new ideas for constructing 0D/3D hierarchical photocatalytic systems, which may provide guidance on designing efficient photocatalysts to maximize photocatalyst kinetics.
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Affiliation(s)
- Zhimin Sun
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Wei Fang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China.
| | - Lei Zhao
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China.
| | - Hui Chen
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Xuan He
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Weixin Li
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Pan Tian
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Zhaohui Huang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
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26
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Liu B, Mu L, Han X, Zhang J, Shi H. Highly efficient visible-light-driven photocatalytic activity of g-C3N4@Ag/AgVO3 composites for dye degradation and bacterial inactivation. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111866] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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27
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Li D, Zan J, Wu L, Zuo S, Xu H, Xia D. Heterojunction Tuning and Catalytic Efficiency of g-C3N4–Cu2O with Glutamate. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b04581] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dongya Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, P.R. China
- Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan, 430073, P.R. China
| | - Jie Zan
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, P.R. China
| | - Liping Wu
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, P.R. China
| | - Shiyu Zuo
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, P.R. China
| | - Haiming Xu
- Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan, 430073, P.R. China
| | - Dongsheng Xia
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, P.R. China
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