Colour centre controlled formation of stable sub-nanometer transition metal clusters on TiO2 nanosheet for high efficient H2 production

Synergetic Subnano Ni‐ and Mn‐Oxo Clusters Anchored by Chitosan Oligomers on 2D g‐C3N4 Boost Photocatalytic CO2 Reduction

“…For 1.5Ni–5COS 20 –UCN, in the Ni 2p spectrum, two peaks centered at 856.1 and 873.9 eV are attributed to the Ni 2p3/2 and Ni 2p1/2 of oxidized Ni 2+ species. [ 54 ] For 1Mn–5COS 20 –UCN, in the Mn 2p spectrum, two peaks at 641.6 and 652.0 eV are ascribed to oxidized Mn 2+ species. [ 55 ] Hence, Ni or Mn species are proved to be successfully introduced and both are in oxidized states with the valences of +2.…”

Experimental and Theoretical Advances on Single Atom and Atomic Cluster‐Decorated Low‐Dimensional Platforms towards Superior Electrocatalysts

“…Light-assisted strategy, as a mild synthesis method, can synthesize ultra-small-sized metal catalysts by simply adjusting the light irradiation time, metal precursor types, pH, and other conditions without reducing agent, and at the same time controlling the size and valence state. [73][74][75][76][77] Gao's group [75] developed a convenient short-time (less than 5 min) photo-deposition strategy, in which three kinds of sub-nanometer high-density isolated TM clusters, including Fe, Co, and Ni, were loaded on ultrathin TiO 2 nanosheets, and the sizes and performance of clusters can be regulated by irradiation time(Figure 4A). There is no doubt that the existence of defects on the support provides the possibility for the anchoring of metal atoms.…”

“…His group [79] reported Pt/defective graphene (DG) SNACs through the redox reaction between [PtCl 4 ] 2− and DG recently (Figure 4C). In addition to [75] Copyright 2020, Elsevier. B) Ag/AgCl-BOC-D nanosheets, formation mechanism of Ag/AgCl ACEs, and corresponding HAADF-STEM image.…”

“…A) Synthetic schematic diagram of Fe, Co, Ni/TiO 2 nanosheets, and Ni/TiO 2 nanosheets under different irradiation time. Adapted with permission [75]. Copyright 2020, Elsevier.…”

M/TiO2 (M = Fe, Co, Ni, Cu, Zn) catalysts for photocatalytic hydrogen production under UV and visible light irradiation

“…This allows the injection of photogenerated electrons from the conduction band of the semiconductor into the metal. 29 Up to now few studies on the use of non-noble metals as cocatalysts have been reported [30][31][32][33] To analyse the photocatalytic behaviour of the prepared M/TiO 2 photocatalysts (M= Fe, Co, Ni, Cu, Zn) under both visible and UV light irradiation, TiO 2 was loaded with 2 wt% of selected transition metals. Hydrogen production profiles for TiO 2 impregnated catalysts are shown in Fig.…”