Ultrathin nanosheets of palladium in boosting its cocatalyst role and plasmonic effect towards enhanced photocatalytic hydrogen evolution

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 56800-56806 ◽  
Author(s):  
Yuzhen Zhu ◽  
Zaixiang Xu ◽  
Wenya Jiang ◽  
Wenjie Yin ◽  
Shuxian Zhong ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Catalytic Reaction ◽  
Light Absorption ◽  
Interfacial Area ◽  
Large Surface Area ◽  
Plasmonic Effect ◽  
Photocatalytic Hydrogen Evolution ◽  
Ultrathin Nanosheets

Large surface area for catalytic reaction/light absorption and large interfacial area with semiconductor for charge transfer highlight the ultrathin metal nanosheets as ideal cocatalyst and plasmonic agent in photocatalytic hydrogen evolution.

A hybrid of CdS/HCa2Nb3O10 ultrathin nanosheets for promoting photocatalytic hydrogen evolution

2017 ◽  
Vol 46 (40) ◽  
pp. 13935-13942 ◽  
Author(s):  
Jinhua Xiong ◽  
Kaiqiang Jing ◽  
Junhua Zou ◽  
Shijing Liang ◽  
Ling Wu
Keyword(s):  
Charge Transfer ◽  
Hydrogen Evolution ◽  
Interfacial Charge Transfer ◽  
Photocatalytic Hydrogen Evolution ◽  
Ultrathin Nanosheets ◽  
Interfacial Charge

A hybrid of CdS/HCa2Nb3O10 ultrathin nanosheets with a tough heterointerface was successfully fabricated. Efficient interfacial charge transfer from CdS to HCa2Nb3O10 nanosheets was achieved to realize the enhanced photocatalytic H2 evolution activity.

High-performance hydrogen evolution at a MoSe2–Mo2C seamless heterojunction enabled by efficient charge transfer

2020 ◽  
Vol 8 (14) ◽  
pp. 6692-6698 ◽  
Author(s):  
Jing Li ◽  
Wenting Hong ◽  
Chuanyong Jian ◽  
Qian Cai ◽  
Xu He ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Dft Calculations ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
High Performance ◽  
Large Surface Area ◽  
Efficient Charge ◽  
Enhanced Conductivity

The heterojunction of Mo2C/MoSe2 with enhanced conductivity and large surface area is contributed to an efficient HER process. DFT calculations prove that there are MIGS in the interface between Mo2C and MoSe2, facilitating charge transfer for HER.

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.

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.

Sign in / Sign up

Export Citation Format

Share Document