article · Micro and Nanostructures
Copper tungstate is gaining attention across multiple disciplines due to its distinctive functional characteristics. Recent advances in the synthesis, structural tuning, and modification of copper tungstate and its composite forms focus on improving photocatalytic efficiency through doping, heterojunction formation, and surface functionalisation. These modifications aim to enhance the production of reactive oxygen species to drive degradation reactions, alongside improvements in reaction kinetics and catalyst endurance. Despite these developments, copper tungstate faces several technical barriers, including poor intrinsic conductivity, charge-carrier recombination, and limited operational durability. Furthermore, practical deployment requires addressing synthesis reproducibility, scalability, economic feasibility, and environmental impacts. Developing copper tungstate materials into viable catalysts for sustainable water treatment will require hybrid system designs, deeper mechanistic understanding, and pilot-scale testing.
Clean water provision requires durable and cost-effective treatment technologies. Copper tungstate offers a sustainable base for photocatalytic systems that degrade harmful pollutants using reactive chemical species. Understanding how to enhance its performance and overcome structural inefficiencies is vital for developing practical, long-term water purification solutions that can operate reliably beyond laboratory settings.
This research targets water treatment applications, particularly for operators of industrial or municipal purification systems seeking sustainable photocatalytic catalysts. The technology remains at an early to intermediate stage of readiness: while material modifications show promise in comparative studies, significant barriers in scalability, synthesis reproducibility, operational stability, and economic viability must be resolved before pilot-scale validation and commercial deployment can take place.
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Copper tungstate (CuWO 4 ) has emerged as a material of interest due to its peculiar properties, which are of fundamental relevance across diverse fields. This review provides a comprehensive overview of recent progress in the synthesis, structural modification, and application of CuWO 4 and its composite materials, with particular emphasis on doping, heterojunction composites, and surface functionalisation as strategies explored to enhance its photocatalytic performance. The mechanistic pathways of Reactive Oxygen Species (ROS) generation are discussed, along with a comparative assessment of degradation performance, kinetic rate constants, and catalyst stability, based on analogous studies in the literature. The review also addresses the challenges and limitations of CuWO 4 , including issues related to intrinsic conductivity and charge-carrier recombination, operational stability under working conditions, scalability and reproducibility of synthesis methods, as well as associated environmental and economic considerations. In addition, the potential of CuWO 4 as catalysts for large-scale production in sustainable water treatment systems is examined, and the future directions and opportunities are elucidated. Overall, CuWO 4 and its composite materials are promising sustainable solutions for water treatment, with future efforts directed toward hybrid system development, mechanistic refinement, and pilot-scale validation.
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DOI: 10.1016/j.micrna.2026.208881
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