A NiS modified CdS/g-C3N4type-II heterojunction photocatalyst is constructed.The build of dual electron transfer channels enhances the electron transport.The optimized NiS/CdS/g-C3N4exhibits remarkable HER activity and stability.This work provides a new tactic for efficient charge separation and ...
DFT计算揭示了硫掺杂对能带结构的影响机理,所掺入硫原子的p轨道参与催化剂价带及导带的形成,从而造成价带顶及导带底的相应偏移。 图3. (a) UV-vis DRS and (b) corresponding plots of transformed Kubelka-Munk function versus photon energy for B-CN, S-CN and SS-CN. (c) XPS valence band spectra, ...
evolution. This work constructs a metal-free, all carbon-based photocatalytic system for efcient hydrogen evolution for the first time. Keywords: g-C 3 N 4 , composite, photocatalyic, hydrogen evolution, charge carrier separation and transfer ...
Driven by this inspiration, we have designed a g-C3N4photoanode through the chemical vapor deposition method and produced NiO as a water oxidation cocatalyst via the deposition of Ni followed by calcination. This scheme significantly enhances the binding force between carbon nitride and substrate and ...
In this work, we propose a strategy to enhance the ferromagnetism of 2D graphite carbon nitride (g-C3N4), which is facilitating the short-range exchange interaction by introducing in-planar boron bridges. As expected, the ferromagnetism of g-C3N4 was significantly enhanced after the introduction ...
Under the bridging effect of this intermolecular hydrogen bond, electrons would transfer from g-C3N4 to the H2O molecule, thereby lowering the Fermi level and enlarging work function of g-C3N4. Interestingly, regardless of the substitute, i.e. g-C3N4 multilayer, large supercell and nanotube, ...
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The higher photocatalytic performance was due to efficient charge carriers' separation at the heterojunction interface via an S-scheme (corroborated by work function, steady-state and time-resolved photoluminescence studies), enhanced utilisation of longer-wavelength photons (>460 nm) and higher surface ...
2022, Chemical Society Reviews Enhancing photoelectrochemical water splitting by combining work function tuning and heterojunction engineering 2019, Nature Communications View all citing articles on ScopusView full text Crown Copyright © 2018 Published by Elsevier B.V. All rights reserved. ...
It is well known that the work function of the photocatalyst or metal is the pre-requisite for inducing the charges transfer and the formation of heterojunction [69]. When the PC Ⅰ is intimate contact with the PC Ⅱ based on the following criteria, they may form a type‐II heterojunction...