College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, China.
College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, China.
Chemosphere. 2021 Jul;274:129793. doi: 10.1016/j.chemosphere.2021.129793. Epub 2021 Jan 28.
The low-cost and environmentally benign elemental red phosphorus (RP) is a new class of photocatalysts with tunable bandgaps (ca. 1.5-2.4 eV) and has a strong visible-light response. It has been considered as a promising metal-free photocatalyst for solving the energy crisis and environmental problems. Unfortunately, due to the low-charge carrier mobility, and serve charge trapping effects, its photocatalytic activity is still restricted in comparison with the traditional compound photocatalysts. Considerable efforts, such as morphology modification, cocatalysts addition, heterostructure construction, charge trapping mitigation, have been conducted to improve the photocatalytic activity of the RP photocatalysts. In this review, the physical and chemical properties and the synthetic strategies of the RP photocatalysts were summarized along with the application in environmental remediation accompanied by the photocatalytic reaction mechanism. Finally, an overview and outlook on the problems and future avenues in designing and constructing advanced RP photocatalysts were also proposed.
廉价且环境友好的元素红磷 (RP) 是一类新型的光催化剂，具有可调带隙（约 1.5-2.4 eV）和强可见光响应。它被认为是一种很有前途的无金属光催化剂，可用于解决能源危机和环境问题。不幸的是，由于载流子迁移率低和严重的电荷捕获效应，其光催化活性仍然受到限制，与传统的复合光催化剂相比还有差距。为了提高 RP 光催化剂的光催化活性，已经进行了大量的努力，例如形貌修饰、助催化剂添加、异质结构构建、电荷捕获缓解等。在本文综述中，总结了 RP 光催化剂的物理化学性质和合成策略及其在环境修复中的应用，并伴随着光催化反应机制。最后，还对设计和构建先进的 RP 光催化剂中存在的问题和未来的发展方向进行了概述和展望。
