Advantageous Interfacial Effects of AgPd/g‐C₃N₄ for Photocatalytic Hydrogen Evolution: Electronic Structure and H₂O Dissociation

Abstract

Bimetallic AgPd nanoparticles have been synthesized before, but the interfacial electronic effects of AgPd on the photocatalytic performance have been investigated less. In this work, the results of hydrogene volution suggest that the bimetallic AgPd/g-C 3 N 4 sample has superiora ctivity to Ag/g-C 3 N 4 and Pd/g-C 3 N 4 photocatalysts. The UV/Vis diffuse reflectances pectroscopy,X -ray photoelectron spectroscopy, CO adsorption diffuse reflectance FTIR spectroscopy,a nd FTIR results demonstrate that in the AgPd/g-C 3 N 4 ,t he surface electronic structures of Pd and Ag are changed, which is beneficial for faster photogenerated electron transfera nd greater H 2 Om olecule adsorption.I nsitu ESR spectra suggest that, under visible light irradiation,t here is more H 2 Odissociation to radicals pecies on the AgPd/g-C 3 N 4 photocatalyst. Furthermore, DFT calculations confirm the interfacial electronic effects of AgPd/g-C 3 N 4 ,that is, Pd dÀ ···Ag d + ,and the activation energyo fH 2 Om olecule dissociation on AgPd/g-C 3 N 4 is the lowest,w hich is the main contributor to the enhanced photocatalytic H 2 evolution.[a] Dr.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Different Dimensionalities, Morphological Advancements and Engineering of g‐C3N4‐Based Nanomaterials for Energy Conversion and Storage

“…Consequently, bimetal co‐catalysts with broad structural and chemical functionalization were intensively explored. In the work by Zou et al., [216] the interstitial electronics interactions made by the bimetallic Ag‐Pd/g‐C 3 N 4 catalysts are more active than Ag/g‐C 3 N 4 and Pd/g‐C 3 N 4 . The Ag‐Pd nanostructures ranging in diameter from 4 to 6 nm were uniformly attached to g‐C 3 N 4 via polyol reductions.…”

Integration of plasmonic AgPd alloy nanoparticles with single-layer graphitic carbon nitride as Mott-Schottky junction toward photo-promoted H2 evolution

“…For Ag nanoparticles, the LSPR with high intensity in a region of 390-410 nm is observed. In the case of AgPd alloy, the intensity of the peak's changes with a change in the Ag:Pd ratio, so that for a ratio of 1:1 compared to 2:1, the effect of LSPR shows a greater reduction, which can be due to charge transfer to the Ag NPs surface 37,[72][73][74] . XRD planes of the bulk g-C 3 N 4 , SLCN and AgPd alloy nanoparticles supported on SLCN with different Ag:Pd ratios were revealed in Fig.…”

“…Accordingly, in recent years, photocatalytic degradation of FA to CO 2 and H 2 has been broadly studied in the literature [31][32][33][34][35] . Recent reports have shown that the design and manufacture of conjugated semiconductor polymers due to their advantages such as constancy in aqueous-medium, visible light absorbency, intramolecular charge transition, the low expense is one of the effective strategies [36][37][38] . Supported semiconductors with visible light absorption can be used to modify the photocatalytic operation of heterogeneous metal based catalysts for photo-decomposition formic acid 31,32,35,39,40 .…”

Electrochemical reactions catalyzed by carbon dots from computational investigations: functional groups, dopants, and defects

“…[16][17][18][19][20] Among them, one of the burgeoning applications of CDs is their use as multi-functional electrochemistry catalysts in various energy conversion processes. Besides, CDs are also oen employed as a catalyst support to anchor metals, 21 oxides, 22,23 nitrides, etc. in electrochemistry.…”