Mian Md Manik, Liu Guijian
CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China Hefei 230026 China
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences Xi'an Shaanxi 710075 PR China.
RSC Adv. 2018 Apr 17;8(26):14237-14248. doi: 10.1039/c8ra02258e.
Incorporating photocatalytic nanoparticles with biochar templates can produce biochar-supported photocatalysts (BSPs) and combine the advantages of biochar with catalytic nanoparticles. The obtained composite exhibits excellent surface properties, crystallinity, chemical stability, recoverability, and higher photocatalytic competency than the bare semiconductor photocatalyst. The literature and advances in BSPs based on the combination of low-cost biochar and catalytic nanoparticles are presented in this review. Various synthetic techniques and physicochemical properties of BSPs are summarized. The article then discusses in detail the important role of biochar in influencing the photocatalytic performance of BSPs such as supporting nanoparticles, increasing the surface area and the number of active sites, shuttling electrons, acting as an electron reservoir, increasing charge separation, and reducing band gap energy. Furthermore, the synergistic effects of adsorption and photodegradation of organic pollutants by BSPs are discussed with in-depth mechanistic evidence. Finally, the application of BSPs in various fields and constructive suggestions for their future development are reported.
将光催化纳米颗粒与生物炭模板相结合可制备生物炭负载型光催化剂（BSP），并结合生物炭与催化纳米颗粒的优势。所得复合材料具有优异的表面性质、结晶度、化学稳定性、可回收性，且比裸半导体光催化剂具有更高的光催化能力。本综述介绍了基于低成本生物炭与催化纳米颗粒结合的BSP的相关文献和研究进展。总结了BSP的各种合成技术和物理化学性质。文章随后详细讨论了生物炭在影响BSP光催化性能方面的重要作用，如负载纳米颗粒、增加表面积和活性位点数量、穿梭电子、充当电子库、增加电荷分离以及降低带隙能量。此外，还深入讨论了BSP对有机污染物的吸附和光降解协同效应的机理证据。最后，报道了BSP在各个领域的应用及其未来发展的建设性建议。
