As one of the important types of two-dimensional materials, layered double hydroxides (LDHs) have been widely used in the biomedical field as carriers for drug delivery.
Low-cost high-efficiency H 2 evolution is indispensable for its large-scale applications in the future. In the research, we expect to build high active photocatalysts for sunlight-driven H 2 production by surface engineering to adjust the work function of photocatalyst surfaces, adsorption/ desorption ability of substrates and products, and reaction activation energy barrier. Single-atom Ptdoped TiO 2−x nanosheets (NSs), mainly including two facets of ( 001) and ( 101), with loading of Pt nanoparticles (NPs) at their edges (Pt/TiO 2−x -SAP) are successfully prepared by an oxygen vacancyengaged synthetic strategy. According to the theoretical simulation, the implanted single-atom Pt can change the surface work function of TiO 2 , which benefits electron transfer, and electrons tend to gather at Pt NPs adsorbed at (101) facet-related edges of TiO 2 NSs for H 2 evolution. Pt/TiO 2−x -SAP exhibits ultrahigh photocatalytic performance of hydrogen evolution from dry methanol with a quantum yield of 90.8% that is ∼1385 times higher than pure TiO 2−x NSs upon 365 nm light irradiation. The high H 2 generation rate (607 mmol g cata −1 h −1 ) of Pt/TiO 2−x -SAP is the basis for its potential applications in the transportation field with irradiation of UV−visible light (100 mW cm −2 ). Finally, lower adsorption energy for HCHO on Ti sites originated from TiO 2 (001) doping single-atom Pt is responsible for high selective dehydrogenation of methanol to HCHO, and H tends to favorably gather at Pt NPs on the TiO 2 (101) surface to produce H 2 .
Formic acid that can be produced by CO2 reduction are considered as liquid organic hydrogen carriers. Herein, Au nanorods loaded PCN-222(Cu) prepared by a seed-induced growth route exhibits highly selective...
Combining molecular transition-metal complexes and semiconductors is an effective way to create high-performance hybrid photocatalysts based on improvement of solar energy harvesting ability and photogenerated charge carrier separation efficiency.
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