Sulphur vacancies-VS2@C3N4 drived by in situ supramolecular self-assembly for synergistic photocatalytic degradation of real wastewater and H2 production: Vacancies taming interfacial compact heterojunction and carriers transfer

Highly-efficient photocatalytic hydrogen evolution triggered by spatial confinement effects over co-crystal templated boron-doped carbon nitride hollow nanotubes

“…13 However, the low exciton separation efficiency has hindered the photocatalytic HER activity of traditional carbon nitride materials. 14 To further improve the HER activity of carbon nitride, various genius strategies like precious metal modication, 15 defect engineering, 16 elemental doping, 17 molecular design, 18 morphology control, 19 and heterojunction construction 20,21 have been proposed and engaged in previous work. Among all the approaches mentioned above, morphology engineering for photocatalysts has been proven to be an effective method for increasing photocatalytic activity.…”

Construction of Hexagonal Prism-like Defective BiOCL Hierarchitecture for Photocatalytic Degradation of Tetracycline Hydrochloride

“…Following the analysis of UV/Vis absorbance, the charge transfer and recombination behaviors were assessed using electrochemical impedance spectra (EIS) and PL emission spectra, respectively, as illustrated in Figure 5 b,c. The EIS Nyquist diagrams of 3D-BiOCl, as revealed in Figure 5 b, have a smaller curvature radius than BiOCl, showing that the defective hierarchical structure lowers the charge transfer resistance of 3D-BiOCl [ 55 , 56 , 57 ]. Furthermore, the fluorescence intensity of 3D-BiOCl in the 350–550 nm bands is substantially weakened compared with that of BiOCl, as seen in Figure 5 c. In general, the PL intensity is dictated by the recombination rate of photo-generated carriers; a weak PL intensity suggests a low recombination rate, implying that the hierarchical structure of 3D-BiOCl facilitates the transit of photo-generated carriers, so as to effectively suppress photo-generated charge recombination [ 58 , 59 , 60 ].…”

Recent strategies for activating the basal planes of transition metal dichalcogenides towards hydrogen production

“…So far, the synergistic effects have also been frequently observed in hydroxide/TMDC, 173–176 TMDC/TMDC, 177–180 oxide/TMDC, 181–183 and others. 184–187 As discussed in Section 2, the high adsorption energy of H 2 O hinders the generation of H ad intermediates, leading to sluggish kinetics in alkaline solution. To optimize HER pathways, Jiang et al prepared a Ni(OH) 2 /MoS 2 heterostructure, in which Ni(OH) 2 could serve as the dissociation promoter, thereafter, H 2 was generated on the MoS 2 basal plane.…”