The enhanced co-catalyst free photocatalytic hydrogen evolution and stability based on indenofluorene-containing donor-acceptor conjugated polymer dots/g-C3N4 nanosheets heterojunction

2019 ◽  
Vol 259 ◽  
pp. 118067 ◽  
Author(s):  
Wei Zhou ◽  
Tao Jia ◽  
Dongqiao Zhang ◽  
Zhikun Zheng ◽  
Wei Hong ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Conjugated Polymer ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution ◽  
Catalyst Free ◽  
Polymer Dots ◽  
Donor Acceptor

Synthesis of donor-acceptor-type conjugated polymer dots as organic photocatalysts for dye degradation and hydrogen evolution

Polymer ◽  
2021 ◽  
pp. 124004
Author(s):  
Yougjin Gwon ◽  
Seonyoung Jo ◽  
Hyun-Jun Lee ◽  
Soo Young Park ◽  
Taek Seung Lee
Keyword(s):  
Hydrogen Evolution ◽  
Conjugated Polymer ◽  
Dye Degradation ◽  
Polymer Dots ◽  
Donor Acceptor

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.

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.

scholarly journals Robust direct Z-scheme exciton transfer dynamics by architecting 3D BiOI MF-supported non-stoichiometric Cu0.75In0.25S NC nanocomposite for co-catalyst-free photocatalytic hydrogen evolution

RSC Advances ◽  
2022 ◽  
Vol 12 (3) ◽  
pp. 1265-1277
Author(s):  
Deeptimayee Prusty ◽  
Sriram Mansingh ◽  
Lopamudra Acharya ◽  
Lekha Paramanik ◽  
K. M. Parida
Keyword(s):  
Charge Transfer ◽  
Hydrogen Evolution ◽  
Transfer Mechanism ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution ◽  
Charge Transfer Mechanism ◽  
Catalyst Free ◽  
Exciton Transfer

Photon-assisted hydrogen evolution over a co-catalyst-free CIS–BOI composite abiding by the direct Z-scheme charge transfer mechanism.

scholarly journals Photocatalytic hydrogen evolution by co-catalyst-free TiO2/C bulk heterostructures synthesized under mild conditions

RSC Advances ◽  
2020 ◽  
Vol 10 (21) ◽  
pp. 12519-12534 ◽  
Author(s):  
Claudio Imparato ◽  
Giuseppina Iervolino ◽  
Marzia Fantauzzi ◽  
Can Koral ◽  
Wojciech Macyk ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution ◽  
Mild Conditions ◽  
Catalyst Free

Defective TiO2/C bulk heterostructures exhibit visible light photoresponsivity and remarkable H2 evolution rates under both UV and visible light irradiation.

Heterojunction ZnWO4/ZnFe2O4 composites with concerted effects and integrated properties for enhanced photocatalytic hydrogen evolution

2018 ◽  
Vol 8 (4) ◽  
pp. 1083-1093 ◽  
Author(s):  
Naveen Kumar Veldurthi ◽  
Neerugatti KrishnaRao Eswar ◽  
Satyapaul A. Singh ◽  
Giridhar Madras
Keyword(s):  
Hydrogen Evolution ◽  
Precipitation Method ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution ◽  
Catalyst Free ◽  
Co Precipitation

A novel co-catalyst free ZnWO4/ZnFe2O4 heterojunction composite was successfully synthesized using a facile co-precipitation method for photocatalytic H2 evolution.

Imidazole substituted Zinc (II) Phthalocyanines for co-catalyst-free Photoelectrochemical and Photocatalytic Hydrogen Evolution: Influence of the Anchoring Group

2021 ◽  
Author(s):  
Abdulcelil Yüzer ◽  
Eminegul Genc ◽  
Gülbin Kurtay ◽  
Gizem Yanalak ◽  
Emre Aslan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Zinc Phthalocyanine ◽  
H2 Evolution ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution ◽  
Catalyst Free ◽  
Anchoring Group

Novel zinc phthalocyanine derivatives, ZnPc-1 and ZnPc-2, consisting of one and four imidazole units, respectively, have been synthesized and utilized as panchromatic photosensitizers for the photocatalytic and photoelectrochemical H2 evolution....

Inert basal plane activation of two-dimensional ZnIn2S4via Ni atom doping for enhanced co-catalyst free photocatalytic hydrogen evolution

2020 ◽  
Vol 8 (26) ◽  
pp. 13376-13384 ◽  
Author(s):  
Xiaowei Shi ◽  
Liang Mao ◽  
Chao Dai ◽  
Ping Yang ◽  
Junying Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Basal Plane ◽  
Electron Lifetime ◽  
Two Dimensional ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution ◽  
Catalyst Free

Doping Ni atoms can trigger the HER activity of inert S atoms on the 2D ZnIn2S4 surface and prolong the electron lifetime.

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