Facilely anchoring Cu2O nanoparticles on mesoporous TiO2 nanorods for enhanced photocatalytic CO2 reduction through efficient charge transfer

Ge, Yanlin; Qiu, Pei; Xiong, Jinyan; Zhu, Xueteng; Cheng, Gang

doi:10.1016/j.cclet.2021.10.047

Cited by 120 publications

(37 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formation of a p-n heterojunction between the semiconductors eventually results in an internal electric field that facilitates electron migration to TiO 2 and hole transfer to Cu 2 O, resulting in efficient charge separation. 177 Another study used a simple hydrothermal approach to fabricate ZnFe 2 O 4 microspheres with Ag/TiO 2 NRs to create a Z-scheme heterojunction. Due to the direct Zscheme heterojunction, photogenerated electrons would presumably be transferred from CB of TiO 2 NRs to VB of ZnFe 2 O 4 , resulting in a longer lifetime with efficient electron utilization in the CO 2 photoreduction process.…”

Section: Tio 2 Coupling With Other Semiconductorsmentioning

confidence: 99%

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review

Alhebshi

Aldeen

Mim

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

Photocatalysis of carbon dioxide by the assistance of solar energy has been one of the most promising approaches to reduce CO 2 to renewable fuel. Several methods are pertained to enhance the photocatalytic activity for stimulating CO 2 reduction to selective fuels. Even though many researchers have been exploring methods of assembling a suitable semiconductor, practical constraints such as charge carrier recombination and low light utilization limit the photocatalytic activity. In this review, recent advancement in semiconductors and their characteristics toward the photoreduction of CO 2 has been comprehensively discussed. The major semiconductors that are discussed and analyzed based on their limitations in this review are TiO 2 , BiVO 4 , CdS, g-C 3 N 4 , ZnO, and MoS 2 -based composites. Initially, the fundamentals of heterogeneous photocatalysis such as the possible molecular pathways, product selectivity, and thermodynamics have been deliberated. Advancement in semiconductors in relation to quantum dots, heterojunction, and sacrificial reagent has been systematically analyzed. Doping and co-doping of semiconductors have proven to reduce the band gap notably and its outstanding electronic band position for the visible light photocatalysis has been identified. Furthermore, the developments of cocatalysts such as noble metals and nonmetals to stimulate photocatalysts performance in view of CO 2 reduction to value-added products have been disclosed. Specific developments in binary semiconductors through Z-scheme, S-scheme, and ternary heterojunction for charge separation and their characterization has been thoroughly deliberated. In addition, the role of doping, structural defects, as well as sensitization in enhancing the light harvesting abilities of the photocatalyst has been discoursed. The developments in photocatalytic reactors with their characteristics and limitations are also assiduously discussed. Finally, conclusions and future directions for photocatalysis of carbon dioxide toward renewable fuel production have been suggested.

show abstract

Section: Tio 2 Coupling With Other Semiconductorsmentioning

confidence: 99%

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review

Alhebshi

Aldeen

Mim

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

show abstract

“…The photocatalytic CO 2 reduction technology, which directionally converts CO 2 into high-value-added solar fuels driven by clean solar energy, has been widely regarded as an ingenious strategy to simultaneously solve the growing energy crisis and environmental pollution problems. − Regrettably, limited by the dissociation energy of the CO bond in CO 2 as high as 750 kJ mol –1 , the photoreduction of CO 2 faces the dilemma of low efficiency and low selectivity. , From the perspective of modern chemistry, such high dissociation energy originates from two “three-center four-electron π bonds” formed by mutually perpendicular p orbitals on C atoms and the parallel p orbitals of two O atoms. Thus, the key to overcoming such high dissociation energy of CO 2 is to weaken the delocalized π bonds.…”

Section: Introductionmentioning

confidence: 99%

Cu–S Bonds as an Atomic-Level Transfer Channel to Achieve Photocatalytic CO₂ Reduction to CO on Cu-Substituted ZnIn₂S₄

Liu

Yuan

Chen

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Due to the intrinsic chemically inert CO 2 with the dissociation energy of C�O bond as high as 750 kJ mol −1 , low efficiency and selectivity have become the most significant restraints for the practical application of photocatalytic CO 2 reduction. Renewing the electronic structure of adsorbed CO 2 on the catalyst surface through a rational catalyst design is crucial to achieving performance improvement. Herein, we prepared ZnIn 2 S 4 and Cu-substituted ZnIn 2 S 4 containing both Lewis acid and Lewis base sites as a model system for investigating the activation of CO 2 by M−S chemical bonds (M represents a metal site). The Cu−S chemical bond can effectively activate CO 2 as a vital electron channel and lower the Gibbs free energy for generating the essential intermediate *COOH. Besides, the Cu 0.7 -ZnIn 2 S 4 sample displays 74.8% selectivity for reducing CO 2 to CO with a rate of 47.2 μmol g −1 h −1 , roughly 7.14 times that of ZnIn 2 S 4 .

show abstract

“…In this issue, rational design of the fabrication method can not only tailor the conduction band (CB) position to meet the thermodynamics of splitting water to hydrogen, but also engineer the charge separation and transfer capability of TiO 2 . 6,11,20,21 In the synthesis of TiO 2 nanostructures, liquid Ti precursors [including TiCl 4 , 22 TiSO 4 , 23 and tetrabutyl orthotitanate (TBT) 24,25 ] have been widely used with different fabrication approaches. However, it suffers from the drawbacks of a fast hydrolysis rate and incontrollable structure.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In the synthesis of TiO 2 nanostructures, liquid Ti precursors [including TiCl 4 , TiSO 4 , and tetrabutyl orthotitanate (TBT) , ] have been widely used with different fabrication approaches. However, it suffers from the drawbacks of a fast hydrolysis rate and incontrollable structure.…”

Section: Introductionmentioning

confidence: 99%

Fabrication Approach Impact on Solar-to-Hydrogen Evolution of Protonic Titanate-Derived Nano-TiO₂

Xiong

et al. 2022

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

In terms of the traditional thermal transformation of TiO 2 from protonic titanate, herein, we study the impact of the fabrication method of protonic titanate on photocatalytic hydrogen evolution of the derived TiO 2 nanostructure. Present synthesis of TiO 2 nanostructures involves the structure engineering of protonic titanate with four different synthesis strategies and a subsequent calcination process for conversion of TiO 2 nanoflakes (hollow structure), nanorods, nanowires, and nanoflowers. Indeed, the TiO 2 nanoflakes exhibit the highest H 2 evolution rate of 3.63 mmol•g −1 •h −1 among the four different TiO 2 photocatalysts. With involvement of 3 wt % Pt, the corresponding H 2 production rate of the TiO 2 nanoflakes increases to 22.55 mmol•g −1 •h −1 , which is 3.18, 5.68, and 2.01 times higher than that of nanorods, nanowires, and nanoflowers, respectively. The band structure and photo/electrochemical analysis results propose that the negative conduction band position, fast photoinduced charge carrier separation, and abundant active sites contribute to excellent photocatalytic hydrogen evolution upon the TiO 2 nanoflakes.

show abstract

Facilely anchoring Cu2O nanoparticles on mesoporous TiO2 nanorods for enhanced photocatalytic CO2 reduction through efficient charge transfer

Cited by 120 publications

References 46 publications

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review

Cu–S Bonds as an Atomic-Level Transfer Channel to Achieve Photocatalytic CO₂ Reduction to CO on Cu-Substituted ZnIn₂S₄

Fabrication Approach Impact on Solar-to-Hydrogen Evolution of Protonic Titanate-Derived Nano-TiO₂

Contact Info

Product

Resources

About

Facilely anchoring Cu2O nanoparticles on mesoporous TiO2 nanorods for enhanced photocatalytic CO2 reduction through efficient charge transfer

Cited by 120 publications

References 46 publications

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO2reduction to energy efficient fuels: A review

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO2reduction to energy efficient fuels: A review

Cu–S Bonds as an Atomic-Level Transfer Channel to Achieve Photocatalytic CO2 Reduction to CO on Cu-Substituted ZnIn2S4

Fabrication Approach Impact on Solar-to-Hydrogen Evolution of Protonic Titanate-Derived Nano-TiO2

Contact Info

Product

Resources

About

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review

Cu–S Bonds as an Atomic-Level Transfer Channel to Achieve Photocatalytic CO₂ Reduction to CO on Cu-Substituted ZnIn₂S₄

Fabrication Approach Impact on Solar-to-Hydrogen Evolution of Protonic Titanate-Derived Nano-TiO₂