Insight into the solar utilization of a novel Z-scheme Cs0.33WO3/CdS heterostructure for UV–Vis-NIR driven photocatalytic hydrogen evolution

Li, Ning; Fan, Haikuan; Dai, Yanjie; Kong, Jing; Ge, Lei

doi:10.1016/j.apsusc.2019.145200

Cited by 30 publications

(10 citation statements)

References 43 publications

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“…It is important to note that W 18 O 49 /Au/g-C 3 N 4 can achieve AQYs of 3.9 and 9.3% at 420 and 1200 nm, respectively. These performances surpass those of g-C 3 N 4 - and W 18 O 49 -based heterostructure photocatalysts as well as other state-of-the-art NIR-responsive photocatalysts reported up to date, as summarized in Table . ,,− In our study, the hydrogen production rate of W 18 O 49 /Au/g-C 3 N 4 (3465 μmol/g·h) is about 2.04 times that of W 18 O 49 /g-C 3 N 4 (1700 μmol/g·h), which shows the highest hydrogen production rate compared with the photocatalysts in Table . In addition, the other Z -scheme photocatalysts composed of other materials without g-C 3 N 4 and W 18 O 49 are summarized in Table S2. − As seen in the table, our W 18 O 49 /Au/g-C 3 N 4 catalyst shows the highest hydrogen production rate compared with other Z -scheme heterojunction catalysts published in the past 1–2 years.…”

Section: Resultsmentioning

confidence: 44%

Triple-Channel Charge Transfer over W₁₈O₄₉/Au/g-C₃N₄ Z-Scheme Photocatalysts for Achieving Broad-Spectrum Solar Hydrogen Production

Hong

Chen

Hsu

et al. 2021

ACS Appl. Mater. Interfaces

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Z-scheme heterojunctions are fundamentally promising yet practically appealing for photocatalytic hydrogen (H2) production owing to the enhanced redox power, spatial separation of charge carriers, and broad-spectrum solar light harvesting. The charge-transfer dynamics at Z-scheme heterojunctions can be accelerated by inserting charge-transfer mediators at the heterojunction interfaces. In this study, we introduce Au nanoparticle mediators in the Z-scheme W18O49/g-C3N4 heterostructure, which enables an improved H2 production rate of 3465 μmol/g·h compared with the direct Z-scheme W18O49/g-C3N4 (1785 μmol/g·h) under 1 sun irradiation. The apparent quantum yields of H2 production with W18O49/Au/g-C3N4 are 3.9% and 9.3% at 420 and 1200 nm, respectively. The improved photocatalytic H2 production activity of W18O49/Au/g-C3N4 is attributable to the triple-channel charge-transfer mechanism: channel IZ-scheme charge transfer facilitates charge separation and increased redox power of the photoexcited electrons; channels II and IIIthe localized surface plasmon resonances from Au (channel II) and W18O49 (channel III) enable light harvesting extension from visible to near-infrared wavelengths.

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Section: Resultsmentioning

confidence: 44%

Triple-Channel Charge Transfer over W₁₈O₄₉/Au/g-C₃N₄ Z-Scheme Photocatalysts for Achieving Broad-Spectrum Solar Hydrogen Production

Hong

Chen

Hsu

et al. 2021

ACS Appl. Mater. Interfaces

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“…83-1334), which is consistent with previous reports. [32,33] Besides the characteristic peaks of Cs x WO 3 , the distinct feature peaks at 2θ values of 27.2°, 37.9°and 39.7°, corresponding to (012), ( 104) and (110) crystallographic planes of rhombohedral Bi 0 (JCPDS, No. can also be detected in the Bi/Cs x WO 3 samples, confirming that Bi NPs were loaded on Cs x WO 3 .…”

Section: Methodsmentioning

confidence: 99%

Dual‐Plasmon Resonance Coupling Promoting Directional Photosynthesis of Nitrate from Air

Yang,

Li,

Xiao

et al. 2023

Angew Chem Int Ed

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Photocatalysis, particularly plasmon‐mediated photocatalysis, offers a green and sustainable approach for direct nitrogen oxidation into nitrate under ambient conditions. However, the unsatisfactory photocatalytic efficiency caused by the limited localized electromagnetic field enhancement and short hot carrier lifetime of traditional plasmonic catalysts is a stumbling block to the large‐scale application of plasmon photocatalytic technology. Herein, we design and demonstrate the dual‐plasmonic heterojunction (Bi/CsxWO3) achieves efficient and selective photocatalytic N2 oxidation. The yield of NO3‐ over Bi/CsxWO3 (694.32 μg g‐1 h‐1) are 2.4 times that over CsxWO3 (292.12 μg g‐1 h‐1) under full‐spectrum irradiation. The surface dual‐plasmon resonance coupling effect generates a surge of localized electromagnetic field intensity to boost the formation efficiency and delay the self‐thermalization of energetic hot carriers. Ultimately, electrons participate in the formation of •O2‐, while holes involve in the generation of •OH and the activation of N2. The synergistic effect of multiple reactive oxygen species drives the direct photosynthesis of NO3‐, which achieves the overall‐utilization of photoexcited electrons and holes in photocatalytic reaction. The concept that the dual‐plasmon resonance coupling facilitates the directional overall‐utilization of photoexcited carriers will pave a new way for the rational design of efficient photocatalytic systems.

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“…For instance, different types of heterojunctions such as but not limited to g-C 3 N 4 @WO 3 , UiO-66@g-C 3 N 4 , Co 3 O 4 @g-C 3 N 4 , and red phosphor@g-C 3 N 4 have been developed and presented excellent photocatalytic performance compared to their respective bare materials. Different Cs 0.33 WO 3 -based heterostructure photocatalysts such as CdS@Cs 0.33 WO 3 , SiO 2 @Cs 0.33 WO 3 , ZnO@Cs 0.33 WO 3 , and AgBr@Cs 0.33 WO 3 have also been developed and their findings reveal that the heterostructure showed outstanding photocatalytic properties compared with the two pristine materials. Previous works have been reported where Cs 0.33 WO 3 , was utilized as a UV- and NIR-absorbing photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Solar Light Driven g-C₃N₄@Cs_0.33WO₃ Heterojunction for the Photodegradation of Colorless Antibiotics

Tessema

Motora

2022

ACS Omega

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This study facilitates the synthesis of a graphitic carbon nitride/cesium tungsten oxide (g-C3N4@Cs0.33WO3) heterojunction using a solvothermal method. The photocatalytic activities of the prepared samples were examined for the photodegradation of colorless antibiotics, namely tetracycline, enrofloxacin, and ciprofloxacin, as well as cationic and anionic dyes, such as methyl orange, rhodamine B, neutral red, and methylene blue, under full-spectrum solar light. We have purposely selected different kinds of wastewater pollutants of colorless antibiotics and cationic and anionic organic dyes to investigate the potential application of this heterojunction toward different groups of water pollutants. The results revealed that the g-C3N4@Cs0.33WO3 heterojunction showed an outstanding photocatalytic activity toward all the pollutants with concentrations of 20 ppm each at pH 3 by photocatalytically removing 97% of tetracycline within 3 h, 98% of enrofloxacin within 2 h, 97% of ciprofloxacin within 2.25 h, 98% of methylene blue in 1 h, 99% of rhodamine B within 2 h, 99% of neutral red in 1.25 h, and 95% of methyl orange in 2 h. These findings indicate that the developed photocatalyst possesses excellent photocatalytic properties toward seven different water pollutants that make it a universal photocatalyst. The developed g-C3N4@Cs0.33WO3 oxide heterojunction also presented a photocatalytic performance better than those of reported solar light active photocatalysts for photodegradation of rhodamine B and tetracycline. The efficient photocatalytic performance of the heterojunction can be ascribed to its extended light-absorbing ability, effective charge separation and fast charge transfer properties, and a high surface area. Moreover, an active species detection experiment also confirmed that superoxide radicals, hydroxyl radicals, and holes played significant roles in the photocatalysis of the organic dyes and tetracycline.

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Insight into the solar utilization of a novel Z-scheme Cs0.33WO3/CdS heterostructure for UV–Vis-NIR driven photocatalytic hydrogen evolution

Cited by 30 publications

References 43 publications

Triple-Channel Charge Transfer over W₁₈O₄₉/Au/g-C₃N₄ Z-Scheme Photocatalysts for Achieving Broad-Spectrum Solar Hydrogen Production

Triple-Channel Charge Transfer over W₁₈O₄₉/Au/g-C₃N₄ Z-Scheme Photocatalysts for Achieving Broad-Spectrum Solar Hydrogen Production

Dual‐Plasmon Resonance Coupling Promoting Directional Photosynthesis of Nitrate from Air

Highly Efficient Solar Light Driven g-C₃N₄@Cs_0.33WO₃ Heterojunction for the Photodegradation of Colorless Antibiotics

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Insight into the solar utilization of a novel Z-scheme Cs0.33WO3/CdS heterostructure for UV–Vis-NIR driven photocatalytic hydrogen evolution

Cited by 30 publications

References 43 publications

Triple-Channel Charge Transfer over W18O49/Au/g-C3N4 Z-Scheme Photocatalysts for Achieving Broad-Spectrum Solar Hydrogen Production

Triple-Channel Charge Transfer over W18O49/Au/g-C3N4 Z-Scheme Photocatalysts for Achieving Broad-Spectrum Solar Hydrogen Production

Dual‐Plasmon Resonance Coupling Promoting Directional Photosynthesis of Nitrate from Air

Highly Efficient Solar Light Driven g-C3N4@Cs0.33WO3 Heterojunction for the Photodegradation of Colorless Antibiotics

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Triple-Channel Charge Transfer over W₁₈O₄₉/Au/g-C₃N₄ Z-Scheme Photocatalysts for Achieving Broad-Spectrum Solar Hydrogen Production

Triple-Channel Charge Transfer over W₁₈O₄₉/Au/g-C₃N₄ Z-Scheme Photocatalysts for Achieving Broad-Spectrum Solar Hydrogen Production

Highly Efficient Solar Light Driven g-C₃N₄@Cs_0.33WO₃ Heterojunction for the Photodegradation of Colorless Antibiotics