Efficient visible-light-driven photocatalytic H2 evolution over MoO2-C/CdS ternary heterojunction with unique interfacial microstructures

Wei, Wenkang; Tian, Qinfen; Sun, Huasheng; Liu, Ping; Zheng, Yi; Fan, Mizi; Zhuang, Jiandong

doi:10.1016/j.apcatb.2019.118153

Cited by 103 publications

(39 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently found photocatalytic materials for water splitting to produce H 2 are very limited. It is known that titanium dioxide (TiO 2 ), [ 3–5 ] graphitic carbon nitride (g‐C 3 N 4 ), [ 6–10 ] metal sulfides (including cadmium sulfide (CdS), and [ 11–13 ] zinc sulfur (ZnS) [ 14–16 ] are typical effective photocatalysts. However, Bi‐based semiconductor materials such as Bi 2 O 2 CO 3 , [ 17–19 ] Bi 2 MoO 6 , [ 20,21 ] Bi 2 WO 6 , [ 22,23 ] and BiOX (X = Cl, Br, and I) [ 24,25 ] as a very important type of photocatalysts only draw considerable attention lately.…”

Section: Introductionmentioning

confidence: 99%

Spatially Separating Redox Centers on Z‐Scheme ZnIn₂S₄/BiVO₄ Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

Chen

Zheng

et al. 2020

Small

209

View full text Add to dashboard Cite

Photocatalysis technology using solar energy for hydrogen (H2) production still faces great challenges to design and synthesize highly efficient photocatalysts, which should realize the precise regulation of reactive sites, rapid migration of photoinduced carriers and strong visible light harvest. Here, a facile hierarchical Z‐scheme system with ZnIn2S4/BiVO4 heterojunction is proposed, which can precisely regulate redox centers at the ZnIn2S4/BiVO4 hetero‐interface by accelerating the separation and migration of photoinduced charges, and then enhance the oxidation and reduction ability of holes and electrons, respectively. Therefore, the ZnIn2S4/BiVO4 heterojunction exhibits excellent photocatalytic performance with a much higher H2‐evolution rate of 5.944 mmol g−1 h−1, which is about five times higher than that of pure ZnIn2S4. Moreover, this heterojunction shows good stability and recycle ability, providing a promising photocatalyst for efficient H2 production and a new strategy for the manufacture of remarkable photocatalytic materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Spatially Separating Redox Centers on Z‐Scheme ZnIn₂S₄/BiVO₄ Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

Chen

Zheng

et al. 2020

Small

209

View full text Add to dashboard Cite

show abstract

“…Au/D-TiO 2 (treated at 150°C) exhibited the highest photocatalytic H 2 production rate of 3,142.33 μmol h −1 g −1 , suggesting that the construction of Au/D-TiO 2 could effectively boost the production activity of photocatalytic H 2 . Besides, the production rate of photocatalytic H 2 first increased and then declined when the treated temperature of D-TiO 2 increased from 100°to 200°C for Au/D-TiO 2 samples, indicating that the treated temperature could efficiently adjust the defects of TiO 2 nanosheets and effect the H 2 production activity [34][35][36].…”

Section: Resultsmentioning

confidence: 97%

Defective Titanium Dioxide-supported Ultrasmall Au Clusters for Photocatalytic Hydrogen Production

Zhang

et al. 2020

Front. Phys.

View full text Add to dashboard Cite

Ultrasmall precious metal clusters have attracted extensive attention for providing a very specific surface and promoting electron transfer. In this work, ultrasmall Au clusters based on defective TiO2 nanosheets (Au/D-TiO2) were prepared and introduced into photocatalytic hydrogen evolution. Different defects of TiO2 nanosheets (D-TiO2) were constructed using a heating process and then loaded with Au clusters. Compared with bare TiO2, Au clusters established on defective TiO2 nanosheets with a narrower band gap showed higher light absorption performances, resulting in obviously enhanced photocatalytic hydrogen production performances. The Au/D-TiO2 displayed the greatly enhanced photocatalytic hydrogen evolution activity of 3,142.33 μmol h−1 g−1, which was over 45 times than the pure TiO2. The results showed that the catalysts had good prospects in the field of photocatalytic hydrogen production.

show abstract

“…Compared with Zn 0.5 Cd 0.5 S, the CZCS-3 sample had an upward tail absorption phenomenon in the region > 500 nm, which could indicate that a mixed interface structure was formed between Zn 0.5 Cd 0.5 S and CoS 2 . [37] It could also be explained that, compared with a single sample of Zn 0.5 Cd 0.5 S, the addition of CoS 2 improved the light response performance of CZCS-3 in the 500-800 nm region. Figures 4b-d were the sample band gap (E g ) value determined according to Tauc formula: αhv = A(hv-E g ) n .…”

Section: Resultsmentioning

confidence: 98%

Construction of CoS₂/Zn_0.5Cd_0.5S S‐Scheme Heterojunction for Enhancing H₂ Evolution Activity Under Visible Light

Zhao

et al. 2021

Chemistry A European J

View full text Add to dashboard Cite

In the field of photocatalysis, building a heterojunction is an effective way to promote electron transfer and enhance the reducibility of electrons. Herein, the S-scheme heterojunction photocatalyst (CoS 2 /Zn 0.5 Cd 0.5 S) of CoS 2 nanospheres modified Zn 0.5 Cd 0.5 S solid solution was synthesized and studied. The H 2 evolution rate of the composite catalyst reached 25.15 mmol g À 1 h À 1 , which was 3.26 times that of single Zn 0.5 Cd 0.5 S, whereas pure CoS 2 showed almost no hydrogen production activity. Moreover, CoS 2 /Zn 0.5 Cd 0.5 S had excellent stability and the hydrogen production rate after six cycles of experiments only dropped by 6.19 %. In addition, photoluminescence spectroscopy and photoelectrochemical experiments had effectively proved that the photogenerated carrier transfer rate of CoS 2 /Zn 0.5 Cd 0.5 S was better than CoS 2 or Zn 0.5 Cd 0.5 S single catalyst. In this study, the synthesized CoS 2 and Zn 0.5 Cd 0.5 S were both n-type semiconductors. After close contact, they followed an S-scheme heterojunction electron transfer mechanism, which not only promoted the separation of their respective holes and electrons, but also retained a stronger reduction potential, thus promoting the reduction of H + protons in photocatalytic experiments. In short, this work provided a new basis for the construction of S-scheme heterojunction in addition to being used for photocatalytic hydrogen production.

show abstract

Efficient visible-light-driven photocatalytic H2 evolution over MoO2-C/CdS ternary heterojunction with unique interfacial microstructures

Cited by 103 publications

References 39 publications

Spatially Separating Redox Centers on Z‐Scheme ZnIn₂S₄/BiVO₄ Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

Spatially Separating Redox Centers on Z‐Scheme ZnIn₂S₄/BiVO₄ Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

Defective Titanium Dioxide-supported Ultrasmall Au Clusters for Photocatalytic Hydrogen Production

Construction of CoS₂/Zn_0.5Cd_0.5S S‐Scheme Heterojunction for Enhancing H₂ Evolution Activity Under Visible Light

Contact Info

Product

Resources

About

Efficient visible-light-driven photocatalytic H2 evolution over MoO2-C/CdS ternary heterojunction with unique interfacial microstructures

Cited by 103 publications

References 39 publications

Spatially Separating Redox Centers on Z‐Scheme ZnIn2S4/BiVO4 Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

Spatially Separating Redox Centers on Z‐Scheme ZnIn2S4/BiVO4 Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

Defective Titanium Dioxide-supported Ultrasmall Au Clusters for Photocatalytic Hydrogen Production

Construction of CoS2/Zn0.5Cd0.5S S‐Scheme Heterojunction for Enhancing H2 Evolution Activity Under Visible Light

Contact Info

Product

Resources

About

Spatially Separating Redox Centers on Z‐Scheme ZnIn₂S₄/BiVO₄ Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

Spatially Separating Redox Centers on Z‐Scheme ZnIn₂S₄/BiVO₄ Hierarchical Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

Construction of CoS₂/Zn_0.5Cd_0.5S S‐Scheme Heterojunction for Enhancing H₂ Evolution Activity Under Visible Light