Rutile titanium dioxide prepared by hydrogen reduction of Degussa P25 for highly efficient photocatalytic hydrogen evolution

2016 ◽  
Vol 6 (14) ◽  
pp. 5693-5699 ◽  
Author(s):  
Fumiaki Amano ◽  
Masashi Nakata ◽  
Akira Yamamoto ◽  
Tsunehiro Tanaka
Keyword(s):  
Titanium Dioxide ◽  
Hydrogen Evolution ◽  
Quantum Efficiency ◽  
Hydrogen Reduction ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient ◽  
Degussa P25 ◽  
Rutile Titanium Dioxide

The quantum efficiency of reduced TiO2 was 46% under 390 nm irradiation, which was much higher than that of Degussa P25.

Highly Efficient Solar-driven Photocatalytic Hydrogen Evolution by Ternary 3D ZnIn2S4-MoS2 Microsphere/1D TiO2 Nanobelt Heterostructure

2021 ◽  
Author(s):  
Hanghang Zhou ◽  
Lan Wang ◽  
Hang Shi ◽  
Huan Zhang ◽  
Yue Wang ◽  
...  
Keyword(s):  
Energy Level ◽  
High Activity ◽  
Hydrogen Evolution ◽  
Solvothermal Method ◽  
Semiconductor Materials ◽  
Effective Strategy ◽  
Geometric Structures ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient ◽  
Tio2 Nanobelts

Combining different semiconductor materials with diverse geometric structures and energy level configurations is an effective strategy for constructing high-activity heterostructure photocatalyst. Using the solvothermal method, 1D TiO2 nanobelts were uniformly...

scholarly journals Band Engineering and Morphology Control of Oxygen-Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Yunyan Wu ◽  
Pan Xiong ◽  
Jianchun Wu ◽  
Zengliang Huang ◽  
Jingwen Sun ◽  
...  
Keyword(s):  
Surface Area ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Separation Efficiency ◽  
Physical Adsorption ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Hydrogen Evolution ◽  
Band Engineering ◽  
Highly Efficient

AbstractGraphitic carbon nitride (g-C3N4)-based photocatalysts have shown great potential in the splitting of water. However, the intrinsic drawbacks of g-C3N4, such as low surface area, poor diffusion, and charge separation efficiency, remain as the bottleneck to achieve highly efficient hydrogen evolution. Here, a hollow oxygen-incorporated g-C3N4 nanosheet (OCN) with an improved surface area of 148.5 m2 g−1 is fabricated by the multiple thermal treatments under the N2/O2 atmosphere, wherein the C–O bonds are formed through two ways of physical adsorption and doping. The physical characterization and theoretical calculation indicate that the O-adsorption can promote the generation of defects, leading to the formation of hollow morphology, while the O-doping results in reduced band gap of g-C3N4. The optimized OCN shows an excellent photocatalytic hydrogen evolution activity of 3519.6 μmol g−1 h−1 for ~ 20 h, which is over four times higher than that of g-C3N4 (850.1 μmol g−1 h−1) and outperforms most of the reported g-C3N4 catalysts.

D–π–A-type triphenylamine dye covalent-functionalized g-C3N4 for highly efficient photocatalytic hydrogen evolution

2020 ◽  
Vol 10 (6) ◽  
pp. 1609-1618 ◽  
Author(s):  
Chao Zhang ◽  
Jiandong Liu ◽  
Xingliang Liu ◽  
Shiai Xu
Keyword(s):  
Reaction Mechanism ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient

Reaction mechanism for the higher photocatalytic performance of H2 production of g-C3N4NSs/TC1 under visible light irradiation (λ ≥ 400 nm).

Highly efficient near-infrared light photocatalytic hydrogen evolution over MoS2 supported Ta2O5 combined with an up-conversion luminescence agent (β-Tm3+,Yb3+:NaYF4/MoS2–Ta2O5 nanocomposite)

2018 ◽  
Vol 42 (8) ◽  
pp. 6134-6143 ◽  
Author(s):  
Xiaoqing Shu ◽  
Cheng Zhao ◽  
Xu Zhang ◽  
Xudong Liu ◽  
Zhiqiang Xing ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient

The photocatalytic hydrogen evolution activity of Ta2O5 can be greatly enhanced by adding up-conversion luminescence agent (β-Tm3+,Yb3+:NaYF4) and co-catalyst (MoS2).

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