In situ photodeposition of cobalt on CdS nanorod for promoting photocatalytic hydrogen production under visible light irradiation

One‐Step Formation of Hybrid Nanocrystal Gels: Deposition of Metal Domains on CdSe/CdS Nanorod and Nanoplatelet Networks

“…In the recent two decades, control over the synthesis procedures and the understanding of charge carrier dynamics (thus, the catalytic behavior as well) in such systems attracted a paramount research interest. As a result, CdTe quantum dots (QDs), CdSe QDs, CdSe nanorods (NRs), CdS NRs and CdSe/CdS dot-in-rod NCs can be efficiently decorated with Ag, [18] Au, [19][20][21][22][23] Pt, [24][25][26] AuPd, [27] Ni, [28,29] Co [30][31][32][33] , Ni(OH) 2 , [34][35][36] or Co(OH) 2 [37] domains; furthermore, we also published a method for the site-selective growth of noble metals on CdSe/CdS core/crown NPLs. [38] The electronic structure of these hybrid NCs (i.e., band alignment, Fermi level) allows the enhancement of the light-induced charge carrier separation endowing them with high potential in photocatalytic applications such as water splitting [16,29,33,35,[37][38][39][40] or H 2 O 2 production.…”

“…As a result, CdTe quantum dots (QDs), CdSe QDs, CdSe nanorods (NRs), CdS NRs and CdSe/CdS dot-in-rod NCs can be efficiently decorated with Ag, [18] Au, [19][20][21][22][23] Pt, [24][25][26] AuPd, [27] Ni, [28,29] Co [30][31][32][33] , Ni(OH) 2 , [34][35][36] or Co(OH) 2 [37] domains; furthermore, we also published a method for the site-selective growth of noble metals on CdSe/CdS core/crown NPLs. [38] The electronic structure of these hybrid NCs (i.e., band alignment, Fermi level) allows the enhancement of the light-induced charge carrier separation endowing them with high potential in photocatalytic applications such as water splitting [16,29,33,35,[37][38][39][40] or H 2 O 2 production. [40,41] Except solely few examples, the abovementioned synthetic procedures take place in organic solvents and require external trigger to initiate the reduction of the metal precursors.…”

Recent Progress on Metal Sulfide Composite Nanomaterials for Photocatalytic Hydrogen Production

“…For instance, Chen et al developed an in-situ photodeposition method to load Co on CdS nanorods. That work reported a highest photocatalytic activity of 1299 µmol h −1 with the optimum loading of 1.0 wt % [87]. In comparison with nickel and iron, cobalt has the ability to improve the rate of H 2 generation.…”

Two dimensional Ni2P/CdS photocatalyst for boosting hydrogen production under visible light irradiation

“… 4 Recently, many non-precious metal co-catalysts have been developed, 5 such as metal sulfide, 6–8 metal carbide, 9,10 metal nitride, 7,11 metal phosphide 12–14 and metallic oxide. 15,16 To promote the activity of CdS photocatalysts, our group has tried several strategies, including: (1) Pt-based bi-metal cocatalysts, such as PtPd NPs, 17 PtNi NPs, 18 and PdNi NPs, 19 which can not only reduce the use of precious metals, but also improve the photocatalytic performance because of the synergistic effect of the bimetals; (2) nobel metal free cocatalysts, such as Ni 20 or Co, 21 also display high photocatalytic activity of H 2 generation; (3) structure redesign, such as PtNi x polyhedra, 22 PtNi x hollow structures 23 and PtNi x Co y concave nanocubes, 24 which provide more active sites for photocatalytic H 2 generation, and result in the promotion of activity of CdS; (4) dealloying PtNi x as a cocatalyst, which shows even higher activity in photocatalytic hydrogen generation. 25 …”