The photocatalytic conversion of carbon dioxide into fuels and valuable chemicals is a promising avenue to address the challenge of environmental change. Plasma treatment as a popular and effective method to prepare and modify materials based on its ultra-high energy and efficiency has attracted significant attention. In this study, abundant Bi quantum dots (Bi QDs) are reduced in situ on the surface of black Bi₂WO₆ nanosheets using an effective dielectric barrier discharge (DBD) plasma technology. The reduction of Bi QDs leads to the generation of a large number of unsaturated coordination atoms, which improves the light absorption performance of Bi₂WO₆. Benefiting from the unique interface design, black Bi₂WO₆ shows superior CO generation rate, roughly threefold higher than that of pristine Bi₂WO₆ nanosheets. Our work provides new insights and can be a reference in plasma modification engineering of catalyst surfaces and photoreduction of CO₂.

中文翻译：

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等离子体诱导的钨酸黑铋作为光子收集器进行光催化二氧化碳转化

将二氧化碳光催化转化为燃料和有价值的化学物质是解决环境变化挑战的有前途的途径。等离子体处理作为一种制备和改性材料的流行而有效的方法，基于其超高的能量和效率已引起了广泛的关注。在这项研究中，使用有效的介电势垒放电（DBD）等离子体技术在黑色Bi ₂ WO ₆纳米片的表面上原位还原了丰富的Bi量子点（Bi QDs）。Bi QD的还原导致大量不饱和配位原子的产生，从而提高了Bi ₂ WO ₆的光吸收性能。受益于独特的界面设计，黑碧₂ WO ₆表现出优异的CO生成速率，大约比原始Bi ₂ WO ₆纳米片高三倍。我们的工作提供了新的见识，可以为催化剂表面的等离子体改性工程和CO _2的光还原提供参考。