1Faculty of Chemical and Process Engineering Technology, Universiti Malaysia Pahang, 26300 Gambang, Pahang, Malaysia
2Faculty of Manufacturing and Mechatronic Engineering Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, 26600 Pekan, Pahang, Malaysia
3Department of Biotechnology Engineering, Kulliyyah of Engineering, International Islamic University, 50728 Kuala Lumpur, Malaysia
4 Petroleum and Chemical Engineering Programme, Faculty of Engineering, Universiti Teknologi Brunei, Jalan Tungku Link Gadong, BE1410, Brunei Darussalam
BibTex Citation Data :
@article{BCREC20627, author = {Hamidah Abdullah and Rohayu Jusoh and Wahaizad Safie and Ricca Rahman Nasaruddin and Maksudur Rahman Khan and Md Noor Arifin}, title = {Modification Strategies of Copper Molybdate-based Photocatalysts for Degradation of Organic Compounds in Wastewater: A Mini Review}, journal = {Bulletin of Chemical Reaction Engineering & Catalysis}, volume = {0}, number = {0}, year = {2026}, keywords = {Visible-light Photocatalysis; Copper Molybdate; Morphology Engineering; Defect Modulation; p-n Heterojunctions.}, abstract = { Visible-light photocatalysis has emerged as a sustainable tertiary‐treatment option. Within this arena, copper molybdate (CuMoO 4 ) is attractive because of its narrow bandgap enables direct solar harvesting while relying on earth-abundant elements. Yet pristine CuMoO 4 suffers from low surface area (< 10 m 2 g -1 ), rapid electron-hole recombination and Cu 2+ photocorrosion, which curb quantum yields and raise secondary-pollution concerns. This mini review critically synthesizes research published between 2019 and 2025 on strategies devised to surmount these limitations. Four major areas are surveyed: (i) morphology engineering that multiplies active-site density and deepens light scattering; (ii) plasmonic or single-atom noble-metal decoration that extends spectral response and accelerates interfacial charge separation via localized surface plasmon resonance; (iii) band-gap and defect modulation through doping or oxygen-vacancy creation, narrowing band gap and introducing long-lived trapping states and (iv) construction of p-n heterojunctions (e.g., ZnO/CuMoO 4 , graphitic carbon nitride/copper molybdate (g-C 3 N 4 /CuMoO 4 ) that yield order-of-magnitude rate enhancements by spatially separating redox half-reactions. The synthesis approaches, from hydrothermal and co-precipitation to thermal-decomposition and solid-state reactions directly influence crystallinity, morphology and defect chemistry, with optimal hydrothermal conditions (180 o C, 10 h) producing high-purity α-CuMoO 4 microspheres and oxygen-vacancy-rich Cu-rich phases delivering up to a 0.5 eV bandgap reduction. Emphasis is placed on correlating structural descriptors with pollutant-mineralization kinetics and on emerging green-synthesis trends. Remaining challenges and research priorities including stability against Cu leaching, scalable fabrication and in-situ mechanistic probes are highlighted to guide future catalyst design. }, issn = {1978-2993}, pages = {2--1} doi = {10.9767/bcrec.20627}, url = {https://journal.bcrec.id/index.php/bcrec/article/view/20627} }
Refworks Citation Data :
Visible-light photocatalysis has emerged as a sustainable tertiary‐treatment option. Within this arena, copper molybdate (CuMoO4) is attractive because of its narrow bandgap enables direct solar harvesting while relying on earth-abundant elements. Yet pristine CuMoO4 suffers from low surface area (< 10 m2g-1), rapid electron-hole recombination and Cu2+ photocorrosion, which curb quantum yields and raise secondary-pollution concerns. This mini review critically synthesizes research published between 2019 and 2025 on strategies devised to surmount these limitations. Four major areas are surveyed: (i) morphology engineering that multiplies active-site density and deepens light scattering; (ii) plasmonic or single-atom noble-metal decoration that extends spectral response and accelerates interfacial charge separation via localized surface plasmon resonance; (iii) band-gap and defect modulation through doping or oxygen-vacancy creation, narrowing band gap and introducing long-lived trapping states and (iv) construction of p-n heterojunctions (e.g., ZnO/CuMoO4, graphitic carbon nitride/copper molybdate (g-C3N4/CuMoO4) that yield order-of-magnitude rate enhancements by spatially separating redox half-reactions. The synthesis approaches, from hydrothermal and co-precipitation to thermal-decomposition and solid-state reactions directly influence crystallinity, morphology and defect chemistry, with optimal hydrothermal conditions (180 oC, 10 h) producing high-purity α-CuMoO4 microspheres and oxygen-vacancy-rich Cu-rich phases delivering up to a 0.5 eV bandgap reduction. Emphasis is placed on correlating structural descriptors with pollutant-mineralization kinetics and on emerging green-synthesis trends. Remaining challenges and research priorities including stability against Cu leaching, scalable fabrication and in-situ mechanistic probes are highlighted to guide future catalyst design.
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