Fast one-pot synthesis of a Se-rich MnCdSe solid solution for highly efficient cocatalyst-free photocatalytic H₂ evolution

Abstract

Designing high-efficiency and stable metal selenides for visible-light-induced photocatalytic H2 production has been challenging. Here, a novel class of Se-rich MnCdSe solid solutions with tunable band structure is fabricated through...

Construction of a unique 2D/0D NiO/ZnCdS p–n hetero junction photocatalyst with highly improved photocatalytic H2 generation capacity

“…Significantly, the photocurrent intensity of 5% NiO/ZnCdS was much higher than that of ZnCdS, suggesting that the formation of a NiO/ZnCdS heterojunction could remarkably enhance the photogenerated charge separation. 53,54…”

“…Significantly, the photocurrent intensity of 5% NiO/ZnCdS was much higher than that of ZnCdS, suggesting that the formation of a NiO/ZnCdS heterojunction could remarkably enhance the photogenerated charge separation. 53,54 Steady-state photoluminescence (PL) spectroscopy and timeresolved photoluminescence (TRPL) spectroscopy were used to gain deep insights into the dynamic charge transfer. 55 As displayed in Fig.…”

Porous Zn1–xCdxSe/ZnO Nanorod Photoanode Fabricated from ZnO Building Blocks Grown on Zn Foil for Photoelectrochemical Solar Hydrogen Production

“…35 In Se 3d XPS graph, a binding energy peak appeared at 53.8 and 54.65 eV for Se 3d 5/2 and Se 3d 3/2 , respectively, signifying the chemical state Se 2− . 24,36 The enhanced XPS peak intensity might be due to the presence of elemental Se on the surface of the Zn 1−x Cd x Se/ZnO NR-160 photoanode. The N 1s peak was detected at 400.02 eV, belonging to the N−H bond of the ZnSe(en) 0.5 /ZnO NR electrode.…”

Femtosecond transient absorption spectroscopy investigation into the electron transfer mechanism in photocatalysis

“…Compared with single photocatalysts, HPs exhibit significantly enhanced photocatalytic performance due to spatially separated photogenerated electrons and holes. 52,53 To elucidate the performance enhancement mechanism of heterojunctions, it is crucial to investigate the dynamics of photogenerated carriers inside HPs, especially the ultrafast interfacial electron transfer process. [54][55][56] The fs-TAS measurements can monitor the electron transfer process in ps and fs, and their applications in HPs deserve extensive attention.…”