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Chau JHF, Lai CW, Leo BF, Juan JC, Lee KM, Qian X, Badruddin IA, Zai J. Direct Z-scheme Cu 2O/WO 3/TiO 2 nanocomposite as a potential supercapacitor electrode and an effective visible-light-driven photocatalyst. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 363:121332. [PMID: 38850906 DOI: 10.1016/j.jenvman.2024.121332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/22/2024] [Accepted: 05/30/2024] [Indexed: 06/10/2024]
Abstract
This paper presents the synthesis of visible light-responsive ternary nanocomposites composed of cuprous oxide (Cu2O), tungsten trioxide (WO3), and titanium dioxide (TiO2) with varying weight percentages (wt.%) of the Cu2O. The resulting Cu2O/WO3/TiO2 (CWT) nanocomposites exhibited band gap energy ranging from 2.35 to 2.90 eV. Electrochemical and photoelectrochemical (PEC) studies confirmed a reduced recombination rate of photoexcited charge carriers in the CWT nanocomposites, facilitated by a direct Z-scheme heterojunction. The 0.50CWT nanocomposite demonstrated superior photodegradation activity (2.29 × 10-2 min-1) against Reactive Black 5 (RB5) dye under visible light activation. Furthermore, the 0.50CWT nanocomposite exhibited excellent stability with 80.51% RB5 photodegradation retention after five cycles. The 0.50CWT electrode achieved a maximum specific capacitance of 66.32 F/g at 10 mA/g current density, with a capacitance retention of 95.17% after 1000 charge-discharge cycles, affirming its stable and efficient supercapacitor performance. This was supported by well-defined peaks in cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) curves, indicating pseudocapacitive properties.
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Affiliation(s)
- Jenny Hui Foong Chau
- Nanotechnology & Catalysis Research Center (NANOCAT), Institute for Advanced Studies, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Chin Wei Lai
- Nanotechnology & Catalysis Research Center (NANOCAT), Institute for Advanced Studies, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Bey Fen Leo
- Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Joon Ching Juan
- Nanotechnology & Catalysis Research Center (NANOCAT), Institute for Advanced Studies, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kian Mun Lee
- Nanotechnology & Catalysis Research Center (NANOCAT), Institute for Advanced Studies, Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Xuefeng Qian
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Irfan Anjum Badruddin
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia
| | - Jiantao Zai
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China.
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VafaeiAsl M, Keshavarz I, Shemirani F, Jamshidi P. Green synthesis of a novel magnetic Fe3O4@SiO2/TiO2@WO3 nanocomposite for methylene blue removal under UV and visible light irradiations. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04963-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Chau JHF, Lai CW, Leo BF, Juan JC, Johan MR. Advanced photocatalytic degradation of acetaminophen using Cu2O/WO3/TiO2 ternary composite under solar irradiation. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106396] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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