Studies on the Stability of Pt/K2La2Ti3O10 Photocatalytic Hydrogen Evolution

2011 ◽  
Vol 233-235 ◽  
pp. 1646-1649 ◽  
Author(s):  
Wen Quan Cui ◽  
Yue Li Qi ◽  
Jun Cheng ◽  
Jin Shan Hu ◽  
Ying Hua Liang
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Valence State ◽  
High Photocatalytic Activity ◽  
Methanol Solution ◽  
Reaction Cell ◽  
Photocatalytic Hydrogen Evolution ◽  
Vis Spectroscopy ◽  
Photocatalytic Activities ◽  
The Stability

Pt/K2La2Ti3O10 was prepared by impregnating K2La2Ti3O10 into H2PtCl6 solution. The structure of the photocatalyst was studied by means of XRD, UV-Vis spectroscopy and XPS. And the photocatalytic activities of the samples were examined in a Pyrex reaction cell by splitting methanol solution. The result revealed that Pt/K2La2Ti3O10 photocatalyst showed much higher activity than pure K2La2Ti3O10 and kept a high photocatalytic activity even after 120 hours of illumination. XPS showed that the valence state of Pt was reduced from Ptto Pt0 during the illumination.

Constructing a 2D/2D heterojunction of MoSe2/ZnIn2S4 nanosheets for enhanced photocatalytic hydrogen evolution

CrystEngComm ◽  
2021 ◽  
Vol 23 (13) ◽  
pp. 2547-2555
Author(s):  
Ting Feng ◽  
Kaili Zhao ◽  
Haiyan Li ◽  
Wei Wang ◽  
Bohua Dong ◽  
...  
Keyword(s):  
Activation Energy ◽  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Active Sites ◽  
High Photocatalytic Activity ◽  
Photocatalytic Hydrogen Evolution ◽  
Water Reduction

2D/2D MoSe2/ZnIn2S4 heterojunctions exhibit high photocatalytic activity owing to MoSe2 as a cocatalyst, which provides more active sites, reducing the overpotential and the activation energy for water reduction.

A novel three-dimensional pyridine-pillared graphene assembly for enhanced electron transfer and photocatalytic hydrogen evolution

2018 ◽  
Vol 8 (11) ◽  
pp. 2818-2824 ◽  
Author(s):  
Linxia Zhang ◽  
Lixia Qin ◽  
Shi-Zhao Kang ◽  
Guodong Li ◽  
Xiangqing Li
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Rare Earth ◽  
Hydrogen Evolution ◽  
Three Dimensional ◽  
High Photocatalytic Activity ◽  
Rare Earth Ions ◽  
Photocatalytic Hydrogen Evolution

Novel 1,2-di(pyridine-4-ly)ethyne pillared GO composites with high photocatalytic activity were achieved with rare earth ions as interfacial linkers.

Cobalt ion redox and conductive polymers boosted the photocatalytic activity of the graphite carbon nitride–Co3O4 Z-scheme heterostructure

2021 ◽  
Vol 45 (1) ◽  
pp. 162-168
Author(s):  
Tao Li ◽  
Jiandong Cui ◽  
Yezhan Lin ◽  
Kecheng Liu ◽  
Rui Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Conductive Polymers ◽  
Cobalt Ion ◽  
Photocatalytic Hydrogen Evolution ◽  
Conductive Polyaniline

The enhanced photocatalytic hydrogen evolution performance of g-C3N4–Co3O4 2D–1D Z-scheme heterojunctions was achieved through the synergistic effect of the cobalt ion redox, conductive polyaniline, and a Co3O4 nanobelt.

scholarly journals Conjugated Polymer Donor-Molecular Acceptor Nanohybrids for Photocatalytic Hydrogen Evolution

2019 ◽  
Author(s):  
Haofan Yang ◽  
Xiaobo Li ◽  
Reiner Sebastian Sprick ◽  
Andrew I. Cooper
Keyword(s):  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Conjugated Polymers ◽  
Hydrogen Evolution ◽  
Conjugated Polymer ◽  
Apparent Quantum Yield ◽  
High Hydrogen ◽  
Photocatalytic Hydrogen Evolution ◽  
Efficient Charge ◽  
Donor Acceptor

A library of 237 organic binary/ternary nanohybrids consisting of conjugated polymers donors and both fullerene and non-fullerene molecular acceptors was prepared and screened for sacrificial photocatalytic hydrogen evolution. These donor-acceptor nanohybrids (DANHs) showed significantly enhanced hydrogen evolution rates compared with the parent donor or acceptor compounds. DANHs of <a></a><a>a polycarbazole</a>-based donor combined with a methanofullerene acceptor (PCDTBT/PC<sub>60</sub>BM) showed a high hydrogen evolution rate of 105.2 mmol g<sup>-1</sup> h<sup>-1</sup> under visible light (λ > 420 nm). This DANH photocatalyst produced 5.9 times more hydrogen than a sulfone-containing polymer (P10) under the same conditions, which is one of the most efficient organic photocatalysts reported so far. An apparent quantum yield of hydrogen evolution of 3.0 % at 595 nm was measured for this DANH. The photocatalytic activity of the DANHs, which in optimized cases reached 179.0 mmol g<sup>-1</sup> h<sup>-1</sup>, is attributed to efficient charge transfer at the polymer donor/molecular acceptor interface. We also show that ternary donor<sub>A</sub>-donor<sub>B</sub>-acceptor nanohybrids can give higher activities than binary donor-acceptor hybrids in some cases.

Fabrication of selective interface of ZnO/CdS heterostructures for more efficient photocatalytic hydrogen evolution

2018 ◽  
Vol 47 (35) ◽  
pp. 12162-12171 ◽  
Author(s):  
Xinlong Ma ◽  
Fei Zhao ◽  
Qinping Qiang ◽  
Tongyao Liu ◽  
Yuhua Wang
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Photocatalytic Hydrogen Evolution

Selective interface in ZnO/CdS heterostructure promote the photocatalytic activity.

Hydrogenated ZnIn2S4 microspheres: boosting photocatalytic hydrogen evolution by sulfur vacancy engineering and mechanism insight

2019 ◽  
Vol 21 (45) ◽  
pp. 25484-25494 ◽  
Author(s):  
Yanze Wang ◽  
Da Chen ◽  
Laishun Qin ◽  
Junhui Liang ◽  
Yuexiang Huang
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Sulfur Vacancy ◽  
Photocatalytic Hydrogen Evolution

The correlation between hydrogenation-induced surface sulfur vacancies and photocatalytic activity of hydrogenated ZnIn2S4 is tentatively proposed in this work.

Substituent effect of conjugated microporous polymers on the photocatalytic hydrogen evolution activity

2020 ◽  
Vol 8 (5) ◽  
pp. 2404-2411 ◽  
Author(s):  
Xiaomin Gao ◽  
Chang Shu ◽  
Chong Zhang ◽  
Wenyan Ma ◽  
Shi-Bin Ren ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Substituent Effect ◽  
Evolution Rate ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Hydrogen Evolution Rate ◽  
Conjugated Microporous Polymers

The influence of substituent groups on the photocatalytic activity of conjugated microporous polymers was investigated, and a high photocatalytic hydrogen evolution rate of 18.93 mmol h−1 g−1 was achieved by PyDF with fluorine atoms.

scholarly journals Reactivity and Mechanism of Photo- and Electrocatalytic Hydrogen Evolution by a Diimine Copper(I) Complex

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1302
Author(s):  
Maria Drosou ◽  
Fotios Kamatsos ◽  
George Ioannidis ◽  
Athanasios Zarkadoulas ◽  
Christiana A. Mitsopoulou ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Dft Calculations ◽  
Hydrogen Evolution ◽  
Molecular Mechanisms ◽  
High Photocatalytic Activity ◽  
Proton Exchange ◽  
H2 Evolution ◽  
Turnover Number ◽  
Proton Reduction ◽  
Insight Into

The tetrahedral copper(I) diimine complex [Cu(pq)2]BF4 displays high photocatalytic activity for the H2 evolution reaction with a turnover number of 3564, thus representing the first type of a Cu(I) quinoxaline complex capable of catalyzing proton reduction. Electrochemical experiments indicate that molecular mechanisms prevail and DFT calculations provide in-depth insight into the catalytic pathway, suggesting that the coordinating nitrogens play crucial roles in proton exchange and hydrogen formation.

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