Stable Cu2O@g-C3N4 core@shell nanostructures: Efficient visible-light photocatalytic hydrogen evolution

Liu, Li; Qi, Yuehong; Hu, Jinshan; An, Weijia; Lin, Shuanglong; Liang, Yeru; Cui, Wenquan

doi:10.1016/j.matlet.2015.06.034

Cited by 59 publications

(14 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduction of Cu(I) to metallic copper, Cu(0) has been reported in the earlier studies on the construction of heterojunctions [13,20]. In the case of the Cu 2 O/g-C 3 N 4 composite structure containing metal oxide as a major component, essentially, no crystalline graphitic carbon nitride signature peaks are seen in the XRD patterns [15]. In the previous studies, hybrid structures of Cu 2 O with g-C 3 N 4 were prepared mainly via a chemical reduction process of Cu(II) precursor [11][12][13]20,29].…”

Section: Results and Discussion Physicochemical Propertiesmentioning

confidence: 81%

“…In the reported studies, Cu 2 O/g-C 3 N 4 based composite structures have been tested for the photocatalytic evolution of hydrogen from water splitting, oxidation of CO, and degradation of organic pollutants [11][12][13][14][15]17,20,29,30]. In comparison with individual components, a ternary composite, Cu 2 O-TiO 2 /g-C 3 N 4 exhibited a high photocatalytic efficiency for discoloration of organic dyes in the presence of hydrogen peroxide [17].…”

Section: Photocatalytic Efficiencymentioning

confidence: 99%

“…Synthesis of multimetal oxides of Cu(I) is one of the important strategies in gaining stability of the species [9,10]. Modifications of g-C 3 N 4 with Cu 2 O have been reported for photocatalytic applications [11][12][13][14][15]. Besides, a core-shell structure of Cu 2 O and g-C 3 N 4 is active as a sensor material [16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Solid-state Synthesis of Composite Structures of Various Cu(I)-based Oxides with g-C3 N4 for Harvesting Solar Energy

2018

AMSE

View full text Add to dashboard Cite

Development of novel materials for an efficient harvesting of solar energy towards applications in environment and energy sectors is an important area of research. A metal-free polymeric material, g-C3 N4 is modified with three Cu(I)- based oxides namely Cu2 O, CuVO3 , and Cu3 VO4 to extend the absorption of the solar spectrum. The composite structures are synthesized by a facile one-step solid-state reaction under inter atmosphere and atmospheric pressure. The amounts of loadings of Cu(I)-based oxides onto g-C3 N4 is varied from 2 wt.% to 10 wt.%. Powder XRD patterns showed that the graphitic structure of carbon nitride is maintained upon the construction of hybrid structures with Cu(I) oxides. SEM images show the textural transformation of the bulk structure of g-C3 N4 into nanosheets upon thermal retreatment. FT-IR spectra further confirmed the stability of g-C3 N4 observed in the XRD patterns. In comparison with the pristine g-C3 N4 , the DR-UV-Vis spectra of the modified solid powders demonstrated a clear red shift in the absorption towards higher wavelength and their better prospects in harvesting solar energy. Tauc plots derived from the DR-UV-Vis spectra showed a narrowing of the direct-allowed band gap upon modifications with Cu(I)-based oxides. The composites showed moderate activity in photocatalytic degradation of rhodamine B under irradiation from a solar simulator

show abstract

Section: Results and Discussion Physicochemical Propertiesmentioning

confidence: 81%

Section: Photocatalytic Efficiencymentioning

confidence: 99%

See 1 more Smart Citation

Solid-state Synthesis of Composite Structures of Various Cu(I)-based Oxides with g-C3 N4 for Harvesting Solar Energy

2018

AMSE

View full text Add to dashboard Cite

show abstract

“…Therefore, it is a crucial procedure to fabricate the composite photocatalyst of 2D g-C 3 N 4 nanosheets and 3D Cu 2 O nanospheres. Until now, the 2D/3D g-C 3 N 4 /Cu 2 O heterojunction with relatively evident benefits has been successfully reported [23]. However, a high efficient method in constructing the heterojunction is still needed.…”

Section: Introductionmentioning

confidence: 99%

Facile in-situ synthesis of 2D/3D g-C₃N₄/Cu₂O heterojunction for high-performance photocatalytic dye degradation

Zhang

Liang

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

Constructing heterojunction is a promising method to enhance visible-light utility and promote photogenerated e − -h + pairs separation of g-C 3 N 4 . Herein, the present work reported a g-C 3 N 4 /Cu 2 O heterojunction by a facile in situ synthetic strategy. The structure, morphology, optical, electrochemical and photocatalytic properties were investigated. The results showed the combination of g-C 3 N 4 nanosheets and Cu 2 O nanospheres resulted in the close contact interface and wide visiblelight response range, and fast separation of the photo-generated e − -h + pairs. The pristine g-C 3 N 4 showed weak photocatalytic performance towards methyl orange (MO) under visible-light irradiation, compared with pristine g-C 3 N 4 , the photocatalytic degradation rate of optimized g-C 3 N 4 /Cu 2 O composite demonstrates the substantially enhanced photocatalytic activity, which showed no obvious loss after five repeated use. The enhanced performance was ascribed to the synergistic effect of good visible-light harvesting and enhanced separation rate of the charge carriers.

show abstract

“…[1][2][3][4][5][6][7][8] However, the low photocatalytic efficiencies of existing catalysts fail to meet the requirements of industrialization and commercialization, greatly limiting the further development of photocatalysis. So it is urgent to explore new photocatalysts with high efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel visible light response Ag 10 Si 4 O 13 photocatalyst

Zhu

Wang

Huang

et al. 2016

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

Stable Cu2O@g-C3N4 core@shell nanostructures: Efficient visible-light photocatalytic hydrogen evolution

Cited by 59 publications

References 14 publications

Solid-state Synthesis of Composite Structures of Various Cu(I)-based Oxides with g-C3 N4 for Harvesting Solar Energy

Solid-state Synthesis of Composite Structures of Various Cu(I)-based Oxides with g-C3 N4 for Harvesting Solar Energy

Facile in-situ synthesis of 2D/3D g-C₃N₄/Cu₂O heterojunction for high-performance photocatalytic dye degradation

Synthesis of novel visible light response Ag 10 Si 4 O 13 photocatalyst

Contact Info

Product

Resources

About

Stable Cu2O@g-C3N4 core@shell nanostructures: Efficient visible-light photocatalytic hydrogen evolution

Cited by 59 publications

References 14 publications

Solid-state Synthesis of Composite Structures of Various Cu(I)-based Oxides with g-C3 N4 for Harvesting Solar Energy

Solid-state Synthesis of Composite Structures of Various Cu(I)-based Oxides with g-C3 N4 for Harvesting Solar Energy

Facile in-situ synthesis of 2D/3D g-C3N4/Cu2O heterojunction for high-performance photocatalytic dye degradation

Synthesis of novel visible light response Ag 10 Si 4 O 13 photocatalyst

Contact Info

Product

Resources

About

Facile in-situ synthesis of 2D/3D g-C₃N₄/Cu₂O heterojunction for high-performance photocatalytic dye degradation