Preparation of CdS@CeO2 core/shell composite for photocatalytic reduction of CO2 under visible-light irradiation

Ijaz, Sana; Ehsan, Muhammad Fahad; Ashiq, Muhammad Naeem; Karamat, Nazia; He, Tao

doi:10.1016/j.apsusc.2016.08.098

Cited by 107 publications

(56 citation statements)

References 54 publications

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“…[6,8,10] Thanks to the joint effort of scholars in the international community,a na rray of photocatalytic materials for the pho-tocatalytic reductiono fC O 2 have been developed, [11][12][13] amongw hich metal oxide semiconductors have been extensively studied due to their high photocatalytic activity. [11,[14][15][16][17] Ther esearch outcomei ndicates that TiO 2 and ZnO have large band gap widths ( % 3.17eVa nd 3.2 eV for TiO 2 and ZnO,respectively). Under normal conditions,only ultraviolet light can inducec atalytic activity, andt hereby the utilization rate of solar light is very limited;t he cuprous oxide (Cu 2 O), on the other hand, is at ypical metallic p-type semiconductor with vacancies whose band gap width rangesb etween 2.0 and 2.2 eV.I ti sa ni deal photocatalyst applicable to the visible light spectrum and is favoredfor its low cost, easy-to-prepare nature,a nd environmental friendliness.H owever, Cu 2 O suffers from as trong tendency to undergo recombination of photoelectron-hole pairs, [18] which limits its photocatalysis efficiency.I na ddition, the Cu 2 On anoparticles are susceptible to agglomeration-inducedd eactivation during the application process.A lso,i ts strong dispersion in water makes the recycling very difficult.…”

Section: Introductionmentioning

confidence: 97%

“…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%

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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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Section: Introductionmentioning

confidence: 97%

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 photocatalytic reduction performance of this material exhibits 99% CO selective reduction of CO 2 ; this hybrid membrane's MOF activity is exceptional compared to other ever reported research findings [153,[274][275][276][277][278][279][280][281][282]. In addition, the incorporation of another semiconductor to the hybrid membrane increases photocatalytic photoinduced redox reaction by the prevalent facile exciton transfer with prohibited charge recombination, which is due to the provision of synergistic reaction between the MOF and semiconductor [137,283].…”

Section: Cds-based Composite Mofmentioning

confidence: 75%

Recent Innovation of Metal-Organic Frameworks for Carbon Dioxide Photocatalytic Reduction

2019

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The accumulation of carbon dioxide (CO2) pollutants in the atmosphere begets global warming, forcing us to face tangible catastrophes worldwide. Environmental affability, affordability, and efficient CO2 metamorphotic capacity are critical factors for photocatalysts; metal-organic frameworks (MOFs) are one of the best candidates. MOFs, as hybrid organic ligand and inorganic nodal metal with tailorable morphological texture and adaptable electronic structure, are contemporary artificial photocatalysts. The semiconducting nature and porous topology of MOFs, respectively, assists with photogenerated multi-exciton injection and adsorption of substrate proximate to void cavities, thereby converting CO2. The vitality of the employment of MOFs in CO2 photolytic reaction has emerged from the fact that they are not only an inherently eco-friendly weapon for pollutant extermination, but also a potential tool for alleviating foreseeable fuel crises. The excellent synergistic interaction between the central metal and organic linker allows decisive implementation for the design, integration, and application of the catalytic bundle. In this review, we presented recent MOF headway focusing on reports of the last three years, exhaustively categorized based on central metal-type, and novel discussion, from material preparation to photocatalytic, simulated performance recordings of respective as-synthesized materials. The selective CO2 reduction capacities into syngas or formate of standalone or composite MOFs with definite photocatalytic reaction conditions was considered and compared.

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“…[1][2][3][4][5][6] Over past few years, CdS, as an important semiconductor material, has been widely used in photocatalytic reactions. [7,8] However, CdS is proved to suffer photocorrosion under light, and its catalytic activity would be reduced. [9] And the catalytic stability of CdS is not enough to maintain high catalytic activity for a long time.…”

Section: Introductionmentioning

confidence: 99%

MoP₄ Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution

Liu

Jiang

et al. 2019

ChemCatChem

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In this work, MoP 4 nanoparticles were in situ loaded onto CdS nanorods (CdS NRs) via vapor-solid phase synthesis and the composite of MoP 4 /CdS proved to be active for photocatalytic hydrogen evolution under visible-light irradiation, in which MoP 4 nanoparticles can work as a novel and efficient cocatalyst. MoP 4 /CdS can achieve a much higher hydrogen evolution rate of 494.5 μmol h À 1 than that of the pristine CdS NRs (22.6 times), and even higher than of the noble metal Pt (2.0 %) loaded on CdS NRs, indicating that MoP 4 nanoparticles can replace noble metals as a potential cocatalyst with ultra-high catalytic activity.Based on the structural and photoelectrical characterization results, the catalytic mechanism of MoP 4 /CdS was proposed. The enhanced photocatalytic activity of MoP 4 /CdS is attributed to the promoted charge separation, low hydrogen evolution over-potential, a long average lifetime for photogenerated carriers and enhanced abilities to inhibit electron-hole pair recombination. In the field, this work provides guidance for the design and preparation of novel and efficient cocatalyst of phosphide.

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Preparation of CdS@CeO2 core/shell composite for photocatalytic reduction of CO2 under visible-light irradiation

Cited by 107 publications

References 54 publications

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

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

Recent Innovation of Metal-Organic Frameworks for Carbon Dioxide Photocatalytic Reduction

MoP₄ Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution

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Preparation of CdS@CeO2 core/shell composite for photocatalytic reduction of CO2 under visible-light irradiation

Cited by 107 publications

References 54 publications

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

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

Recent Innovation of Metal-Organic Frameworks for Carbon Dioxide Photocatalytic Reduction

MoP4 Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution

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Product

Resources

About

MoP₄ Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution