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Surface Modification of Hollow Structure TiO2 Nanospheres for Enhanced Photocatalytic Hydrogen Evolution.


ABSTRACT: Engineering the surface structure of semiconductor is one of the most promising strategies for improving the separation and transfer efficiency of charge, which is a key issue in photocatalysis. Here, we designed and fabricated the C decorated hollow TiO2 photocatalysts (C-TiO2), in which 3-aminophenol-formaldehyde resin (APF) spheres were used as template and carbon precursor. It was determined that the C content can be easily controlled by calcinating the APF spheres with different time. Moreover, the synergetic effort between the optimal C content and the formed Ti-O-C bonds in C-TiO2 were determined to increase the light absorption and greatly promote the separation and transfer of charge in the photocatalytic reaction, which is verified from UV-vis, PL, photocurrent, and EIS characterizations. Remarkably, the activity of the C-TiO2 is 5.5-fold higher than that of TiO2 in H2 evolution. A feasible strategy for rational design and construction of surface-engineered hollow photocatalysts to improve the photocatalytic performance was provided in this study.

SUBMITTER: Ning G 

PROVIDER: S-EPMC10004735 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Surface Modification of Hollow Structure TiO<sub>2</sub> Nanospheres for Enhanced Photocatalytic Hydrogen Evolution.

Ning Gaomin G   Zhang Yan Y   Shi Chunjing C   Zhao Chen C   Liu Mengmeng M   Chang Fangfang F   Gao Wenlong W   Ye Sheng S   Liu Jian J   Zhang Jing J  

Nanomaterials (Basel, Switzerland) 20230303 5


Engineering the surface structure of semiconductor is one of the most promising strategies for improving the separation and transfer efficiency of charge, which is a key issue in photocatalysis. Here, we designed and fabricated the C decorated hollow TiO<sub>2</sub> photocatalysts (C-TiO<sub>2</sub>), in which 3-aminophenol-formaldehyde resin (APF) spheres were used as template and carbon precursor. It was determined that the C content can be easily controlled by calcinating the APF spheres with  ...[more]

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