Visible-Light Driven Overall Conversion of CO₂ and H₂O to CH₄ and O₂ on 3D-SiC@2D-MoS₂ Heterostructure

Abstract

A marigold-like SiC@MoS 2 nanoflower with a unique Z-scheme structure efficiently achieves the overall conversion of gas phase CO 2 with H 2 O (CO 2 (g) + 2H 2 O (g) = CH 4 + 2O 2 ) without any sacrificial reagents under visible light (λ ≥ 420 nm) irradiation. The CH 4 and O 2 evolution are 323 and 621 μL•g −1 •h −1 , and stable throughout 5 cycle reactions of total 40 h. This work demonstrates a breakthrough in artificial photosynthesis with the Z-scheme 1D heterojunction constructed by combining 2D semiconductor and 3D semiconductor based on the transfer balance of photogenerated electron and hole.

High‐Rate, Tunable Syngas Production with Artificial Photosynthetic Cells

“…Besides the traditional catalytic and electrocatalytic strategies, an alternative approach is to apply photoenergy for CO 2 conversion, including solar photovoltaic (PV) devices, photoelectrochemical (PEC) cells, and photocatalysis (PC) with electrons and protons derived from water . Photocatalyzed conversion by the excitation of solid inorganic catalysts or molecular catalysts with light generally yields low efficiency of less than 2.0 %, but is believed to be a promising means of addressing the issues of CO 2 conversion . The PEC approach, which, like electrolysis, exploits energetic electrons to drive the chemical conversion on the photocathode, may be more amenable to inexpensive, large‐scale syngas production, and thus has recently attracted more attention.…”

“…Direct efficient conversion of carbon dioxide into syngas (synthesis gas,C O + H 2 ), ac ritical C1 feedstock for the production of liquid hydrocarbon fuels and chemicals by Fischer-Tropsch processes,with low energy input is one of the formidable challenges in the sustainable chemical industry. [1] Besides the traditional catalytic and electrocatalytic strategies, [2] an alternative approach is to apply photoenergy for CO 2 conversion, including solar photovoltaic (PV) devices, photoelectrochemical (PEC) cells,a nd photocatalysis (PC) with electrons and protons derived from water. [3] Photocatalyzed conversion by the excitation of solid inorganic catalysts or molecular catalysts with light generally yields low efficiency of less than 2.0 %, but is believed to be apromising means of addressing the issues of CO 2 conversion.…”

High‐Rate, Tunable Syngas Production with Artificial Photosynthetic Cells

“…[1] Besides the traditional catalytic and electrocatalytic strategies, [2] an alternative approach is to apply photoenergy for CO 2 conversion, including solar photovoltaic (PV) devices, photoelectrochemical (PEC) cells,a nd photocatalysis (PC) with electrons and protons derived from water. [1] Besides the traditional catalytic and electrocatalytic strategies, [2] an alternative approach is to apply photoenergy for CO 2 conversion, including solar photovoltaic (PV) devices, photoelectrochemical (PEC) cells,a nd photocatalysis (PC) with electrons and protons derived from water.…”

High photoresponse and fast carrier mobility: Two‐dimensional rGO‐AgBr/Ag composite based on Z‐scheme heterointerface with plasma for hydrogen evolution

“…21,22 Based on these problems, lots of works aim to improve the performance of traditional photocatalysts, such as heterostructure fabrication, [23][24][25] metal/nonmetal doping, 26,27 plasma introduction, 28,29 composite with conductive materials, 30,31 crystal regulation, 32,33 surface modification, 34,35 defect formation 36,37 and so on. 21,22 Based on these problems, lots of works aim to improve the performance of traditional photocatalysts, such as heterostructure fabrication, [23][24][25] metal/nonmetal doping, 26,27 plasma introduction, 28,29 composite with conductive materials, 30,31 crystal regulation, 32,33 surface modification, 34,35 defect formation 36,37 and so on.…”