PtCu alloy cocatalysts for efficient photocatalytic CO₂ reduction into CH₄ with 100% selectivity

Abstract

In this paper, PtCu alloys with varying Pt/Cu ratios were deposited onto TiO2 nanocrystals to selectively photoreduce CO2 into CH4. The experimental results show that the appropriate Pt/Cu deposition ratio...

Construction of the Sn-doped defect pyrochlore oxide KNbMoO6·H2O/g-C3N4 composite and its photocatalytic reduction of CO2

“…However, from a kinetic point of view, the formation of CH 4 , which requires eight electrons, is more difficult than the two-electron reduction of CO 2 to CO. So dynamically it is easier to generate CO. 36,37 We also noticed that no product is detected in the reactor without adding a catalyst, light, CO 2 or water.…”

Promoting Photocatalytic Carbon Dioxide Reduction by Tuning the Properties of Cocatalysts

“…In a study by Zhao and colleagues in 2022, the authors investigated the selectivity and mechanism of CRR using photocatalysts loaded with PtCu alloy NPs composed of Pt and Cu [39c] . PtCuNPs/TiO 2 were prepared by the H 2 reduction method.…”

“…In a study by Zhao and colleagues in 2022, the authors investigated the selectivity and mechanism of CRR using photocatalysts loaded with PtCu alloy NPs composed of Pt and Cu. [39c] PtCuNPs/TiO 2 were prepared by the H 2 reduction method. X‐ray photoelectron spectroscopy measurements, STEM measurements, and energy‐dispersive X‐ray spectroscopy measurements confirmed the loading of the alloy NPs, consisting of Pt and Cu, on TiO 2 .…”

Improving the CO2 Hydrogenation Activity of Photocatalysts via the Synergy between Surface Frustrated Lewis Pairs and the CuPt Alloy

“…However, the composition and function of the nanoalloys vary in various specific applications. , Notably, the dissociation of H 2 is also a crucial issue in the photothermal catalytic CO 2 hydrogenation process . The efficient dissociation of H 2 promotes the formation of protonated/hydrated H, which provides H species for activated CO 2 and improves the CO 2 reduction efficiency . It is well known that metal nanoparticles are widely valued for their good ability to dissociate H 2 .…”

“…34 The efficient dissociation of H 2 promotes the formation of protonated/hydrated H, which provides H species for activated CO 2 and improves the CO 2 reduction efficiency. 35 It is well known that metal nanoparticles are widely valued for their good ability to dissociate H 2 . 36 Wang et al 27 found that Pt has a high ability to adsorb and dissociate H 2 and is often used as a co-catalyst.…”