钼酸铋基光催化剂在能源和环境中的应用研究进展

Review on bismuth molybdate based photocatalysts for energy and environmental applications

将太阳能转化为化学能并消除有害污染物是人类社会可持续发展面临的主要挑战。半导体光催化技术因其利用可持续的太阳能资源和环境友好等特点成为极具潜力的环境治理技术。钼酸铋(Bi_(2)MoO_(6))作为一种窄禁带半导体光催化剂,由于其结构的多样性和可调性而表现出巨大的潜力。但传统Bi_(2)MoO_(6)材料的光催化性能并不理想,其主要原因在于Bi_(2)MoO_(6)较差的电荷分离能力和较弱的还原能力等。构建异质结是促进Bi_(2)MoO_(6)电荷分离和提高其还原能力的有效策略。从提高Bi_(2)MoO_(6)光催化活性的角度,对Bi_(2)MoO_(6)的结构、合成方法及其在能源转化和环境净化方面的应用进行了综述和讨论,对异质结/同质结增强Bi_(2)MoO_(6)电荷分离能力的改进策略也进行了深入的讨论。最后,对Bi_(2)MoO_(6)材料未来的发展方向给出了展望。

Converting solar energy into chemical energy and eliminating harmful pollutants are the major challenges for sustainable social development.Semiconductor photocatalysis is an appealing and promising technology for sustainable energy production and environmental protection.Bismuth molybdate(Bi_(2)MoO_(6)),as a narrow band gap semiconductor photocatalyst,showed great potential due to its diversified and tunable structure.However,the photocatalytic performance of Bi 2MoO 6 was unsatisfactory mainly due to the poor charger separation and weak reducing capacity.The formation of heterojunction/homojunction was an effective strategy to enhance the charger separation and increase the reducing capacity of Bi_(2)MoO_(6).In this review,we have summarized the characteristics,synthetic methods,and applications of Bi_(2)MoO_(6) in energy production and environmental purification.More importantly,the modification strategies for enhanced charge separation of Bi_(2)MoO_(6) with heterojunction/homojunction are thoroughly discussed.Finally,the potential challenges of Bi_(2)MoO_(6) are propounded for future research.