PtS quantum dots/Nb₂O₅ nanosheets with accelerated charge transfer for boosting photocatalytic H₂ production

Abstract

The rapid recombination rate of charges limits the improvement of photocatalytic hydrogen evolution performance related to semiconductor photocatalysts. An effective strategy to accelerate charge separation and transfer is the design...

Enhancing internal electric field by Zn2+ doping for promoting bulk-charge separation and improving visible photocatalytic activity of Bi2YO4Cl

“…7a and b, the eclipsing effect of electron and hole absorption results in wide negatively elicited absorption properties from 440 nm to 800 nm both in BY and BY-Zn2. 40 The TA kinetic curves of BY and BY-Zn2 probed at 620 nm are shown in Fig. 7c and d, respectively.…”

In situfabrication of MIL-68(In)@ZnIn2S4heterojunction for enhanced photocatalytic hydrogen production

“…The separation and transfer of photogenerated charges are closely related to the properties of the photocatalyst itself. 46 Therefore, a series of relevant spectroscopic and photoelectrochemical characterizations were carried out to reveal the behavior of photogenerated charge carriers. 47 The steady-state photoluminescence (PL) spectroscopy is an effective means to reflect the recombination of photogenerated electron–hole pairs.…”

CdS Nanorods and ZnCd-PBA Construct a Direct S-Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

“…The smaller the radius of the EIS arc, the easier it is for electrons to transfer and the better the separation effect between electrons and holes. , The fact that CZC-15 has the smallest radius of curvature in the EIS curve indicates that the photogenerated carriers of CZC-15 are easily transferred at the interface, and the electron and hole separation effect is good. The reason may be the construction of the S-scheme heterojunction between CdS and ZnCd-PBA, forming a new electron transfer channel and improving the separation of electrons and holes, , so that photogenerated electrons in CZC-15 can migrate more effectively to the active site, facilitating their participation in the hydrogen production reaction.…”

“…40,41 The fact that CZC-15 has the smallest radius of curvature in the EIS curve indicates that the photogenerated carriers of CZC-15 are easily transferred at the interface, and the electron and hole separation effect is good. The reason may be the construction of the S-scheme heterojunction between CdS and ZnCd-PBA, forming a new electron transfer channel and improving the separation of electrons and holes, 42,43 so that photogenerated electrons in CZC-15 can migrate more effectively to the active site, facilitating their participation in the hydrogen production reaction. The hydrogen evolution overpotentials of CdS, ZnCd-PBA, and CZC-15 catalysts were measured by linear scanning voltammetry (LSV) curve at a scan rate of 1 mV s −2 .…”