Photocatalytic CO2 conversion to methanol by Cu2O/graphene/TNA heterostructure catalyst in a visible-light-driven dual-chamber reactor

Li, Fēi; Zhang, Li; Tong, Jincheng; Liu, Yingliang; Xu, Shengang; Cao, Yan; Cao, Shaokui

doi:10.1016/j.nanoen.2016.06.056

Cited by 130 publications

(72 citation statements)

References 57 publications

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“…Graphene protects Cu 2 O against photocorrosion, promotes charge separation and e − transfer across the heterojunction interfaces and inhibits the backward reaction by separating the photocatalytic reaction sites (Figure ). In addition, the enriched electron density of graphene allows the multi‐electron reduction of CO 2 to methanol, while its high surface area improved CO 2 adsorption . The important role of graphene was demonstrated in Cu 2 O/graphene binary composites where a six fold increase in CO evolution was observed .…”

Section: Cu‐based Materials For Co2 Photocatalytic Reductionmentioning

confidence: 98%

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Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

2018

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Problems derived from climate change dictate the reestablishment of our prospective in energy production. In this direction, converting solar energy through photocatalysis into suitable fuels such as hydrogen and carbon‐based fuels by water splitting and CO2 reduction, respectively, has been established as a promising approach. Currently, the main concern in this field is the development of cost‐effective and efficient photocatalysts. Among the different systems studied, Cu‐based photocatalysts are considered attractive candidates for both applications due to their relative low‐cost, the natural abundance of the constituents and their promising reactivity. In this review, the current progress in the field of Cu‐based photoactive materials for both H2 production and CO2 reduction will be discussed. Finally, an outlook on the challenges and future research directions is given.

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Section: Cu‐based Materials For Co2 Photocatalytic Reductionmentioning

confidence: 98%

“…Cu 2 O was coupled with graphene and TiO 2 nanotubes array (TNA) and applied in CO 2 photoreduction in a dual‐chamber reactor . Graphene was proven to have a multi‐role in the overall reaction mechanism.…”

Section: Cu‐based Materials For Co2 Photocatalytic Reductionmentioning

confidence: 99%

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

2018

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“…Graphene is a two dimensional monolayer of sp 2 hybridised carbon atoms, which due to its unique physical and electronic properties, has attracted global scientific interest and investment since its formal discovery/isolation in 2004 . The reduced form of the oxide of graphene, reduced graphene oxide (rGO), exhibits a high surface area, tunable band gap, and excellent electron mobility . rGO surfaces also possess a variety of chemically reactive oxygen functionalities that render it a versatile catalyst support and amenable to mixing with other semiconductors to form hybrid semiconductor composites with potentially superior photocatalytic properties .…”

Section: Introductionmentioning

confidence: 99%

Pompon Dahlia‐like Cu₂O/rGO Nanostructures for Visible Light Photocatalytic H₂ Production and 4‐Chlorophenol Degradation

et al. 2020

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Hierarchical Cu2O nanospheres with a Pompon Dahlia‐like morphology were prepared by a one‐pot synthesis employing electrostatic self‐assembly. Nanocomposite analogues were also prepared in the presence of reduced graphene oxide (rGO). Photophysical properties of the hierarchical Cu2O nanospheres and Cu2O/rGO nanocomposite were determined, and their photocatalytic applications evaluated for photocatalytic 4‐chlorophenol (4‐CP) degradation and H2 production. Introduction of trace (<1 wt %) rGO improves the apparent quantum efficiency (AQE) at 475 nm of hierarchical Cu2O for H2 production from 2.23 % to 3.35 %, giving an increase of evolution rate from 234 μmol.g−1.h−1 to 352 μmol.g−1.h−1 respectively. The AQE for 4‐CP degradation also increases from 52 % to 59 %, with the removal efficiency reaching 95 % of 10 ppm 4‐CP within 1 h. Superior performance of the hierarchical Cu2O/rGO nanocomposite is attributable to increased visible light absorption, reflected in a greater photocurrent density. Excellent catalyst photostability for >6 h continuous reaction is observed.

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“…Thanks to the joint effort of scholars in the international community, an array of photocatalytic materials for the photocatalytic reduction of CO 2 have been developed, among which metal oxide semiconductors have been extensively studied due to their high photocatalytic activity . The research outcome indicates that TiO 2 and ZnO have large band gap widths (≈3.17 eV and 3.2 eV for TiO 2 and ZnO, respectively).…”

Section: Introductionmentioning

confidence: 99%

Preparation of Cuprous Oxide Nanoparticles Coated with Aminated Cellulose for the Photocatalytic Reduction of Carbon Dioxide to Methanol

et al. 2018

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The present study utilizes microcrystalline cellulose as the raw material to prepare nanoscale cellulose crystal (NCC) particles through a hybrid method incorporating mixed acid and ultrasonic treatment. Furthermore, the NCC undergoes a surface modification through SOCl2 chlorination and ethylenediamine (EDA) passivation, which generates graphitized aminated cellulose doped with nitrogen (NCC‐EDA). This product, due to the coordination and dispersion effects of the functional groups (e.g., amido group) on its surface, is in turn used to coat Cu2O nanoparticles derived from the in situ reduction of CuCl2⋅2 H2O, which leads to a composite photocatalyst Cu2O/NCC‐EDA with relatively high catalytic activity. Besides the structural characterization, the present study also examines the characteristics of CH3OH prepared by visible‐light‐based photocatalytic reduction of CO2/H2O. The results indicate that the prepared Cu2O/NCC‐EDA are spherical particles with a diameter of approximately 50 nm, which are in possession of a tree‐structured rough shell capable of absorbing an increased amount of CO2. Under the radiation of visible light, the Cu2O in the prepared product is activated, yielding photoelectron–hole pairs. Driven by the nitrogen in the carrier, the formed photoelectron–hole pairs are subject to an efficient separation, and are thereby consumed by the oxidation–reduction reaction. As a result, a high activity for the photocatalyzed reduction of CO2 is obtained.

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Photocatalytic CO2 conversion to methanol by Cu2O/graphene/TNA heterostructure catalyst in a visible-light-driven dual-chamber reactor

Cited by 130 publications

References 57 publications

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Pompon Dahlia‐like Cu₂O/rGO Nanostructures for Visible Light Photocatalytic H₂ Production and 4‐Chlorophenol Degradation

Preparation of Cuprous Oxide Nanoparticles Coated with Aminated Cellulose for the Photocatalytic Reduction of Carbon Dioxide to Methanol

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Photocatalytic CO2 conversion to methanol by Cu2O/graphene/TNA heterostructure catalyst in a visible-light-driven dual-chamber reactor

Cited by 130 publications

References 57 publications

Photocatalysis for Hydrogen Production and CO2 Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO2 Reduction: The Case of Copper‐Catalysts

Pompon Dahlia‐like Cu2O/rGO Nanostructures for Visible Light Photocatalytic H2 Production and 4‐Chlorophenol Degradation

Preparation of Cuprous Oxide Nanoparticles Coated with Aminated Cellulose for the Photocatalytic Reduction of Carbon Dioxide to Methanol

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Product

Resources

About

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Pompon Dahlia‐like Cu₂O/rGO Nanostructures for Visible Light Photocatalytic H₂ Production and 4‐Chlorophenol Degradation