Single-Atom Pd Supported on TiO<sub>2</sub> for the Photocatalytic Production of Hydrogen

Qiu, Zhi-shi; Zhou, Tong; Ma, Yi-wen; Ma, Yu-xiang; Lv, Tian-ping; Zhao, Jian-hong; Zhang, Jin; Zhang, Yu-min; Liu, Qing-ju

doi:10.1021/acsanm.3c04909

Cited by 4 publications

(1 citation statement)

References 40 publications

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“…Photocatalytic hydrogen production tests were performed under light irradiation to investigate the photocatalytic performance of the prepared catalysts. , As shown in Figure a, the hydrogen production rate of pure MCS is 724 μmol g –1 h –1 , while the H 2 production rate of the F-TiO 2 /MCS composite is 3197 μmol g –1 h –1 , which is 4.42 times that of MCS. The hydrogen production rate of pure TiO 2 is lower than that of F-TiO 2 (Figure S4).…”

Section: Resultsmentioning

confidence: 99%

Fluorinated-TiO₂/Mn_0.2Cd_0.8S S-Scheme Heterojunction with Rich Sulfur Vacancies for Photocatalytic Hydrogen Production

Cheng,

Hua,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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The quick recombination of photogenerated carriers and the high surface reaction barrier are two important aspects influencing photocatalytic hydrogen generation. In this paper, a sulfur vacancy-modified twodimensional (2D) fluorinated-TiO 2 nanosheet/Mn 0.2 Cd 0.8 S (F-TiO 2 /MCS) Sscheme heterojunction was synthesized by a simple hydrothermal method to accelerate photogenerated electron transfer. The formation of an S-scheme heterojunction between MCS nanoflowers and 2D F-TiO 2 enhances the efficacy of photocatalytic hydrogen generation by facilitating the separation of photogenerated electron−hole pairs. Meanwhile, the sulfur vacancies of F-TiO 2 /MCS change the local electronic structure of the heterojunction surface by capturing photogenerated electrons, resulting in a photocatalytic hydrogen evolution rate for F-TiO 2 /MCS of 3197 μmol g −1 h −1 , which is 4.42 times greater than that of the pure MCS. Experimental measurements and density functional theory (DFT) calculations show that the mutual synergy between the S-scheme heterojunction and the sulfur vacancies not only provides abundant H 2 adsorption active sites but also promotes interfacial charge separation and migration, which improves the photocatalytic performance of the F-TiO 2 /MCS composite. This work holds significance for the photocatalytic hydrogen production of sulfur vacancy-modified S-scheme heterojunctions.

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Section: Resultsmentioning

confidence: 99%

Fluorinated-TiO₂/Mn_0.2Cd_0.8S S-Scheme Heterojunction with Rich Sulfur Vacancies for Photocatalytic Hydrogen Production

Cheng,

Hua,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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Insights into performance and mechanism of improving methanol photoreforming on the ternary catalysts with p-n junction

Ding,

Jia,

Wang

2025

International Journal of Hydrogen Energy

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Indium Single Atoms Supported on S-Scheme Cu₃P/TiO₂ as a Photocatalyst for Hydrogen Production

Zhou,

Wang,

Luo

et al. 2024

ACS Appl. Nano Mater.

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Photocatalytic splitting of water for hydrogen production has great developing potentiality. However, owing to the high recombination of photogenerated electron–hole pairs, the low photocatalytic activity limits its application. Metal single atom loading is an effective method to enhance the photocatalytic activity, but further clarification of the micromechanism is needed and important. In this work, an S-scheme Cu3P/TiO2 photocatalyst loaded with the In single atom (InSA) was prepared by the photodeposition method. Irradiated by a 300 W Xe lamp, the H2 production rate of Cu3P/InSA-TiO2 reaches 8.50 mmol g–1 h–1, which is 10.6 times that of TiO2 and 1.4 times that of Cu3P/TiO2 (methanol as the scavenger). Further analysis and calculations with density functional theory suggest that the loaded InSA replace the surface Ti atoms of TiO2. The remarkable photocatalytic activity is ascribed to the fact that the S-scheme heterojunction greatly facilitates the separation of the photogenerated carriers, while the introduction of InSA provides a channel for the charge transport at the heterojunction interface, which further enhances the mobility and reduces the recombination of the photocarriers, thus enhancing the photocatalytic H2 evolution property. This work provides an effective method to increase the photocatalytic H2 production activity, as well as deepens the understanding of the activity-enhancing mechanism by loading a metal single atom.

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Single-Atom Pd Supported on TiO₂ for the Photocatalytic Production of Hydrogen

Cited by 4 publications

References 40 publications

Fluorinated-TiO₂/Mn_0.2Cd_0.8S S-Scheme Heterojunction with Rich Sulfur Vacancies for Photocatalytic Hydrogen Production

Fluorinated-TiO₂/Mn_0.2Cd_0.8S S-Scheme Heterojunction with Rich Sulfur Vacancies for Photocatalytic Hydrogen Production

Insights into performance and mechanism of improving methanol photoreforming on the ternary catalysts with p-n junction

Indium Single Atoms Supported on S-Scheme Cu₃P/TiO₂ as a Photocatalyst for Hydrogen Production

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Single-Atom Pd Supported on TiO2 for the Photocatalytic Production of Hydrogen

Cited by 4 publications

References 40 publications

Fluorinated-TiO2/Mn0.2Cd0.8S S-Scheme Heterojunction with Rich Sulfur Vacancies for Photocatalytic Hydrogen Production

Fluorinated-TiO2/Mn0.2Cd0.8S S-Scheme Heterojunction with Rich Sulfur Vacancies for Photocatalytic Hydrogen Production

Insights into performance and mechanism of improving methanol photoreforming on the ternary catalysts with p-n junction

Indium Single Atoms Supported on S-Scheme Cu3P/TiO2 as a Photocatalyst for Hydrogen Production

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Resources

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Single-Atom Pd Supported on TiO₂ for the Photocatalytic Production of Hydrogen

Fluorinated-TiO₂/Mn_0.2Cd_0.8S S-Scheme Heterojunction with Rich Sulfur Vacancies for Photocatalytic Hydrogen Production

Fluorinated-TiO₂/Mn_0.2Cd_0.8S S-Scheme Heterojunction with Rich Sulfur Vacancies for Photocatalytic Hydrogen Production

Indium Single Atoms Supported on S-Scheme Cu₃P/TiO₂ as a Photocatalyst for Hydrogen Production