scholarly journals Ni-Co single atomic anchored conjugated microporous polymer for high-performance photocatalytic hydrogen evolution

Author(s):  
Chen Yang ◽  
Zhonghua Cheng ◽  
Giorgio Divitini ◽  
Cheng Qian ◽  
Bo Hou ◽  
...  

The fabrication of single atomic photocatalysts via a simple pathway is a crucial challenge to enable efficient production of hydrogen. Herein, we demonstrate a gaseous diffusion strategy to construct single...

2021 ◽  
Vol 126 ◽  
pp. 112121
Author(s):  
Yunfeng Wu ◽  
Yu Zang ◽  
Liang Xu ◽  
Jianjun Wang ◽  
Hongge Jia ◽  
...  

Author(s):  
Qiqi Sun ◽  
Qi Liu ◽  
Wen Gao ◽  
Chuanwang Xing ◽  
Jingshun Shen ◽  
...  

The cathodic photoelectrochemical (PEC) biosensor, is one of ideal systems for sensing applications owing to its advantages in the low-cost, simplicity of the detection and miniaturization of the sensors with...


2020 ◽  
Vol 132 ◽  
pp. 110040
Author(s):  
Wan Zhao ◽  
Zhi Chen ◽  
Xiuru Yang ◽  
Xiaoxiao Qian ◽  
Chunxi Liu ◽  
...  

Author(s):  
Lian-Wei Luo ◽  
Chong Zhang ◽  
Peixun Xiong ◽  
Yongbo Zhao ◽  
Wenyan Ma ◽  
...  

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 912
Author(s):  
Duong Nguyen Nguyen ◽  
Uk Sim ◽  
Jung Kyu Kim

Hydrogen-evolution reaction (HER) is a promising technology for renewable energy conversion and storage. Electrochemical HER can provide a cost-effective method for the clean production of hydrogen. In this study, a biomimetic eco-friendly approach to fabricate nitrogen-doped carbon nanosheets, exhibiting a high HER performance, and using a carbonized polydopamine (C-PDA), is described. As a biopolymer, polydopamine (PDA) exhibits high biocompatibility and can be easily obtained by an environmentally benign green synthesis with dopamine. Inspired by the polymerization of dopamine, we have devised the facile synthesis of nitrogen-doped nanocarbons using a carbonized polydopamine for the HER in acidic media. The N-doped nanocarbons exhibit excellent performance for H2 generation. The required overpotential at 5 mA/cm2 is 130 mV, and the Tafel slope is 45 mV/decade. Experimental characterizations confirm that the excellent performance of the N-doped nanocarbons can be attributed to the multisite nitrogen doping, while theoretical computations indicate the promotion effect of tertiary/aromatic nitrogen doping in enhancing the spin density of the doped samples and consequently in forming highly electroactive sites for HER applications.


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