Probing interfacial charge transfer in heterojunctions for photocatalysis

Abstract

Photocatalytic reactions can sustainably employ inexhaustible solar energy for environmental remediation and conversion of photon energy into chemical energy, and thereby show great potential in alleviating the environmental stress and...

A Mesoporous CuO/CuSe Heterojunction Nanocomposite with Applications in Visible‐Light Photocatalysis and as an Electrochemical Phenol Sensor

“…Concurrently, photogenerated holes are transferred from the VB of CuO to the VB of CuSe. Therefore, the separation of photogenerated electrons‐holes pair is facilitated due to the simultaneous hole and electron transfer process [58,59] . The accumulated electrons at the interface position of two semiconductor (CuO and CuSe) reduce O 2 to O 2 .− superoxide radical.…”

“…Therefore, the separation of photogenerated electrons-holes pair is facilitated due to the simultaneous hole and electron transfer process. [58,59] The accumulated electrons at the interface position of two semiconductor (CuO and CuSe structure and extensive interface from close contact, which dramatically expedites the photogenerated charge carrier separation or transfer (Scheme 2). The reaction involved during photodegradation of dye has been written below: e…”

Progress on enhancing the charge separation efficiency of carbon nitride for robust photocatalytic H2 production

“…The main reason lies in the high recombination rate of photo-induced charges, leading to less electron involvement in the H 2 evolution reaction. 29,30 For photocatalysis, ''no charge, no reaction'' is clear, the charge separation and transfer are crucial for photocatalytic performance. As shown in Fig.…”

Metal organic framework-derived transition metal-doped CoSx nanocage for enhanced visible light-assisted methanol electrocatalytic oxidation

“…The fast recombination will hamper the participation of the e À -h + pair in photocatalytic reactions. Several approaches to inhibit charge carrier recombination in heterogeneous photocatalysis are described in previous literature, [21][22][23] such as morphology control, doping, construction of junctions, and cocatalyst loading. Doping heteroatoms is an effective way to tailor the physicochemical property and reactivity of surface catalysts.…”