Photocatalytic C–H activation for C–C/CN/C–S bond formation over CdS: effect of morphological regulation and S vacancies

Abstract

CdS catalytic materials were utilized to fabricate C–C, CN and C–S bonds for drug intermediates or other value-added products through the high bond energy, low polarity and strong inertia C–H bonds activation.

Manipulating the Spin State of Co Sites in Metal–Organic Frameworks for Boosting CO2 Photoreduction

“…Currently, spin-state regulation in heterogeneous photocatalysts is mainly limited to the creation of structural vacancies and elemental doping. [13][14][15][16]19 Unfortunately, vacancies and dopants are not definitely catalytically active for CO 2 reduction, and sometimes, vacancies are even recombination centers of electrons and holes. 3 Meanwhile, vacancies and dopants in catalysts are not homogeneously distributed, and accordingly, only the local spin state is changed.…”

Photoexcited Electron and Hole Polaron Formation in CdS Single Crystals Revealed by Femtosecond Time-Resolved IR Spectroscopy

“…This technique is also valuable for modifying complex molecular structures at later stages. 11,12 A noteworthy example is the study by Wang et al, which elucidated the mechanism of selective C−H activation through photoexcited holes in CdS nanorods, resulting in the high-efficiency synthesis of ethylene glycol with 90% selectivity. 13 This work has opened up a new direction for studying the mechanism of carriers in CdS, since, in general, chemical selectivity is associated with the free energy or the energy level of the photogenerated electrons.…”

“…In recent decades, cadmium sulfide (CdS) has garnered significant attention in the field of optoelectronics, with applications in quantum dot luminescence, − solar cell power, − lasers cooling, , and photocatalysis. , Particularly, the photocatalytic activation of carbon–hydrogen (C–H) bonds to form carbon–carbon (C–C) bonds enables the rapid diversification of simple and widely available starting materials. This technique is also valuable for modifying complex molecular structures at later stages. , A noteworthy example is the study by Wang et al, which elucidated the mechanism of selective C–H activation through photoexcited holes in CdS nanorods, resulting in the high-efficiency synthesis of ethylene glycol with 90% selectivity . This work has opened up a new direction for studying the mechanism of carriers in CdS, since, in general, chemical selectivity is associated with the free energy or the energy level of the photogenerated electrons.…”

Intercalation- and Vacancy-Enhanced Internal Electric Fields in ZnIn2S4 for Highly Efficient Photocatalytic H2O2 Production

“…12 The essence of strengthening the IEF is to enhance the uneven distribution of charge in materials, and defect engineering has been proven to be an effective strategy to increase the IEF. 13−15 For example, the polarized IEF induced by S vacancy, Bi/O vacancy pairs, and Zn/S dual-vacancy could effectively facilitate the spatial charge separation and directional transfer, resulting in the significant enhancement of the photocatalytic activity of CdS, 16 Bi 24 O 31 Br 10 , 17 and ZnIn 2 S 4 , 18 respectively. Accordingly, it can be concluded that certain defects can contribute to the improvement of the IEF of ZnIn 2 S 4 .…”