The influence of hydrofluoric acid etching processes on the photocatalytic hydrogen evolution reaction using mesoporous silicon nanoparticles

2020 ◽  
Vol 222 ◽  
pp. 176-189 ◽  
Author(s):  
Sarah A. Martell ◽  
Ulrike Werner-Zwanziger ◽  
Mita Dasog
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Hydrofluoric Acid ◽  
Silicon Nanoparticles ◽  
Acid Etching ◽  
Mesoporous Silicon ◽  
Photocatalytic Hydrogen Evolution ◽  
Si Nanoparticles ◽  
Acid Treatments

In this work, the response of the photocatalytic activity of mp-Si nanoparticles to a series of HF acid treatments was investigated.

Facile synthesis of porous C-doped C3N4: fast charge separation and enhanced photocatalytic hydrogen evolution

2020 ◽  
Vol 44 (41) ◽  
pp. 17891-17898
Author(s):  
Yabin Jiang ◽  
Zhuogeng Lin ◽  
Yuying Zhang ◽  
Yuecheng Lai ◽  
Dong Liang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Charge Separation ◽  
Facile Synthesis ◽  
Photocatalytic Hydrogen Evolution ◽  
Fast Charge ◽  
Gaseous Bubbles

A facile gaseous-bubbles templating approach to synthesize porous C-doped g-C3N4 with enhanced photocatalytic activity for hydrogen evolution reaction.

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.

Rationally Designed Ta3N5@ReS2 Heterojunctions for Promoted Photocatalytic Hydrogen Production

2021 ◽  
Author(s):  
Xiaoqiang Zhan ◽  
Zhi Fang ◽  
Bing Li ◽  
Haitao Zhang ◽  
Leyao Xu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photocatalytic Hydrogen Production ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Active ◽  
Adsorption Processes

Highly-active heterojunctions hold the pivotal function in photocatalytic hydrogen evolution reaction (HER). Herein, Ta3N5@ReS2 photocatalysts are rationally designed via the combination of template-assisted, hydrothermal and solution-adsorption processes, in which few...

MXenes: Applications in electrocatalytic, photocatalytic hydrogen evolution reaction and CO2 reduction

2020 ◽  
Vol 486 ◽  
pp. 110850 ◽  
Author(s):  
Thang Phan Nguyen ◽  
Dinh Minh Tuan Nguyen ◽  
Dai Lam Tran ◽  
Hai Khoa Le ◽  
Dai-Viet N. Vo ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Co2 Reduction ◽  
Photocatalytic Hydrogen Evolution

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.

Optimization of the facet structure of cobalt oxide catalysts for enhanced hydrogen evolution reaction

2020 ◽  
Vol 10 (4) ◽  
pp. 1040-1047 ◽  
Author(s):  
Minghong Wu ◽  
Shuqiang Ke ◽  
Wenqian Chen ◽  
Shaomei Zhang ◽  
Min Zhu ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxide Catalysts ◽  
Photocatalytic Hydrogen Evolution ◽  
Facet Structure

The three different exposed crystal planes of Co3O4 catalysts, in which the {112} and {011} planes with abundant Co3+ sites exhibited photocatalytic hydrogen evolution activity superior to that of the {001} plane.

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