Ti3+ self-doped mesoporous black TiO2/graphene assemblies for unpredicted-high solar-driven photocatalytic hydrogen evolution

Zhou, Guowei; Shen, Liyan; Xing, Zipeng; Kou, Xuejun; Duan, Shuxiang; Fan, Leilei; Hu, Meng; Xu, Qingguo; Zhang, Xunying; Li, Lihua; Zhao, Min; Mi, Jinxing; Li, Zhenzi

doi:10.1016/j.jcis.2017.06.097

Cited by 48 publications

(8 citation statements)

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“…Mesoporous structure TiO 2 owns kinds of preparation process mainly including solvothermal method, sol‐gel method, template method, hydrothermal method . Solvothermal method usually dissolves one or more precursor in organic solvent, but the solubility of precursor in organic solvent is not satisfactory.…”

Section: Introductionsupporting

confidence: 74%

Mesoporous Spherical TiO₂ with Outstanding Photocatalysis under Visible Light

et al. 2018

ChemistrySelect

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In the paper, mesoporous spherical TiO 2 was synthesized using Ti(SO 4 ) 2 and TiCl 3 as raw materials through one step hydrothermal and calcination method. Good dispersibility and high photocatalytic performance could be obtained without adding any organic dispersant. The preparation process of TiO 2 was simple and high efficient. The grain sizes were 29.0 nm, and the specific surfaces were 99.201 m 2 /g. The photocatalytic efficiency of the prepared samples degrading methyl orange was 1.85 times higher than that of the conventional P25 under visible light. In addition, the reaction mechanism of mesoporous spherical TiO 2 based on experiments was explained.[a] Dr.

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Section: Introductionsupporting

confidence: 74%

Mesoporous Spherical TiO₂ with Outstanding Photocatalysis under Visible Light

et al. 2018

ChemistrySelect

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“…5(A). The VB of BTG-10 is located at 2.68 eV, which is lower than the commonly used TiO 2 (3.0 eV) [26]. The insets in Fig.…”

Section: Resultsmentioning

confidence: 73%

“…In the Ti 2p XPS spectrum (Fig. 2(B) to the presence of a high Ti 3+ concentration [25][26][27]. All Ti 2p spectra are symmetrical on the low energy side, indicating that TiO 2 is not doped with carbon [17].…”

Section: Resultsmentioning

confidence: 92%

Synthesis and characterization of black TiO2/graphene composites with enhanced photocatalysis

Li¹,

Liu²,

Yang³

et al. 2020

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According to the composite design, a series of black TiO2/graphene composites were synthesized to improve its photocatalytic activity. TiO2 is generated in situ on the surface of graphene by a facile sol-gel method. The combination of graphene and TiO2 was beneficial for eliminating the opportunity of photogenerated electron-hole recombination due to the excellent conductivity of graphene. In the subsequent hydrogenation process, the self-doping Ti3+ was introduced accompanied by the crystallization of amorphous TiO2. The narrowed bandgap caused by self-doping Ti3+ enhanced the visible light absorption and make the composites appear black. Both of them improved the photocatalytic performance of the synthesized black TiO2/graphene composites. The band structure of the composite was analyzed by valence band XPS, revealing the reason for the high visible light catalytic performance of the composite. The results proved that the black TiO2/graphene composites synthesized show attractive potential for applications in environmental and energy issues.

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“…As a result, the recombination rate is inhibited, which subsequently enhances the photocatalytic activity. 106 Additionally, Qin and the team reported a binary heterostructure of nitrogen-doped B-TiO 2 nanosphere with CdS nanorods via hydrothermal route. They found that the TiO 2 part of the heterostructure is composed of pure anatase phase possessing Ti 3+ as well as oxygen vacancies.…”

Section: Strategies To Enhance the Photocatalytic Hydrogen Evolution ...mentioning

confidence: 99%

Black titania an emerging photocatalyst: review highlighting the synthesis techniques and photocatalytic activity for hydrogen generation

et al. 2021

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Ti3+ self-doped mesoporous black TiO2/graphene assemblies for unpredicted-high solar-driven photocatalytic hydrogen evolution

Cited by 48 publications

References 49 publications

Mesoporous Spherical TiO₂ with Outstanding Photocatalysis under Visible Light

Mesoporous Spherical TiO₂ with Outstanding Photocatalysis under Visible Light

Synthesis and characterization of black TiO2/graphene composites with enhanced photocatalysis

Black titania an emerging photocatalyst: review highlighting the synthesis techniques and photocatalytic activity for hydrogen generation

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Ti3+ self-doped mesoporous black TiO2/graphene assemblies for unpredicted-high solar-driven photocatalytic hydrogen evolution

Cited by 48 publications

References 49 publications

Mesoporous Spherical TiO2 with Outstanding Photocatalysis under Visible Light

Mesoporous Spherical TiO2 with Outstanding Photocatalysis under Visible Light

Synthesis and characterization of black TiO2/graphene composites with enhanced photocatalysis

Black titania an emerging photocatalyst: review highlighting the synthesis techniques and photocatalytic activity for hydrogen generation

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Product

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Mesoporous Spherical TiO₂ with Outstanding Photocatalysis under Visible Light

Mesoporous Spherical TiO₂ with Outstanding Photocatalysis under Visible Light