Efficacy of Perovskite Photocatalysis: Challenges to Overcome,ACS Energy Letters

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Efficacy of Perovskite Photocatalysis: Challenges to Overcome
ACS Energy Letters ( IF 19.3 ) Pub Date : 2022-05-18 , DOI: 10.1021/acsenergylett.2c00765
Jeffrey T. DuBose _{1,

2} , Prashant V. Kamat _{1,

2,

3}

Affiliation

Having gained prominence in the design of high-efficiency solar cells, metal halide perovskites have taken center stage in photocatalysis. Despite the demonstrations of photocatalytic activity in inducing reduction and oxidation processes through visible-light excitation, the long-term stability of CsPbBr₃ and other perovskite nanocrystals and nanostructures still poses a challenge. This Perspective discusses how factors such as instability arising from labile ligands, ease of halide exchange, halide mobility under photoirradiation, chemical and morphological transformations in polar solvents, and difficulty in designing heterostructures pose major hurdles in developing halide perovskites as photocatalysts. The key examples of organic and inorganic transformations as well as interfacial charge-transfer processes discussed here present some unique features of perovskite photocatalysts and highlight the complexity in their utilization for future chemical conversion processes. Strategies to protect the perovskite surface are needed to maintain the required long-term stability in practical applications.

中文翻译：

钙钛矿光催化的功效：要克服的挑战

金属卤化物钙钛矿在高效太阳能电池的设计中获得了突出地位，在光催化领域占据了中心位置。_{尽管展示了通过可见光激发诱导还原和氧化过程的光催化活性，但 CsPbBr 3}的长期稳定性和其他钙钛矿纳米晶体和纳米结构仍然构成挑战。该观点讨论了不稳定配体引起的不稳定性、卤化物交换的容易性、光辐照下的卤化物迁移率、极性溶剂中的化学和形态转变以及设计异质结构的困难等因素如何成为发展卤化物钙钛矿作为光催化剂的主要障碍。这里讨论的有机和无机转化以及界面电荷转移过程的关键例子展示了钙钛矿光催化剂的一些独特特征，并强调了它们在未来化学转化过程中的应用的复杂性。需要采取保护钙钛矿表面的策略来保持实际应用中所需的长期稳定性。

更新日期：2022-05-18

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