Visible-light-responsive ternary metal tungstate (MWO₄) photocatalysts are being increasingly investigated for energy conversion and environmental purification applications owing to their striking features, including low cost, eco-friendliness, and high stability under acidic and oxidative conditions. However, rapid recombination of photoinduced electron–hole pairs and a narrow light response range to the solar spectrum lead to low photocatalytic activity of MWO₄-based materials, thus significantly hampering their wide usage in practice. To enable their widespread practical usage, significant efforts have been devoted, by developing new concepts and innovative strategies. In this review, we aim to provide an integrated overview of the fundamentals and recent progress of MWO₄-based photocatalysts. Furthermore, different strategies, including morphological control, surface modification, heteroatom doping, and heterojunction fabrication, which are employed to promote the photocatalytic activities of MWO₄-based materials, are systematically summarized and discussed. Finally, existing challenges and a future perspective are also provided to shed light on the development of highly efficient MWO₄-based photocatalysts.

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由于可见光响应性三元金属钨酸盐（MWO ₄）具有引人注目的特性，包括低成本，生态友好以及在酸性和氧化条件下的高稳定性，因此正在越来越多地被研究用于能量转换和环境净化应用。但是，光致电子-空穴对的快速复合以及对太阳光谱的狭窄光响应范围导致基于MWO ₄的材料的光催化活性降低，从而大大阻碍了它们在实践中的广泛使用。为了使它们能够广泛地实际使用，已经通过开发新的概念和创新的策略做出了巨大的努力。在这篇综述中，我们旨在对MWO的基本原理和最新进展提供一个综合的概述。₄基光催化剂。此外，系统地总结和讨论了不同的策略，包括形态控制，表面改性，杂原子掺杂和异质结制造，这些策略可用于促进基于MWO ₄的材料的光催化活性。最后，还提供了现有挑战和未来前景，以阐明高效的基于MWO ₄的光催化剂的开发。

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