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A highly stable metal–organic framework derived phosphorus doped carbon/Cu2O structure for efficient photocatalytic phenol degradation and hydrogen production
| Content Provider | Semantic Scholar |
|---|---|
| Author | Dubale, Amare Aregahegn Ahmed, Ibrahim Nasser Chen, Xiahui Ding, Cheng Jun Hou, Guihua Guan, Rongfeng Meng, Xiangming Yang, Xiu-Li Xie, Ming-Hua |
| Copyright Year | 2019 |
| Abstract | Developing a low cost but efficient photocatalyst with maximum utilization of sunlight, minimum charge carrier recombination and improved stability is very crucial and challenging. Triphenylphosphine modification of HKUST-1 followed by controlled calcination resulted in a phosphorus doped carbon/Cu2O composite (HKUST-1-P-300). The structure and band properties were fully studied, and phenol degradation and H2 evolution were employed to evaluate the photocatalytic activity. Under visible light irradiation, HKUST-1-P-300 showed superior photocatalytic activity and stability. A phenol degradation efficiency of up to 99.8% was achieved within 90 minutes, and also a remarkable H2 evolution rate of 1208 μmol was achieved. The external quantum efficiency of solar hydrogen evolution over this photocatalyst, without noble metal loading, reaches 48.6% at 425 nm. More auspiciously, the photocatalytic reaction continued for more than 12 h without performance degradation. To get further evidence for the origin of the improved photocatalytic activity of the HKUST-1-P-300, a series of characterization studies have been carried out. To the best of our knowledge, this work represents the first example of using P-doped carbon/Cu2O both for phenol degradation and H2 production. Mechanistic studies were carried out to give insights into the photodegradation process, and the superior photocatalytic activity of HKUST-1-P-300 can be ascribed to enhanced visible light absorption efficiency, higher surface area, efficient separation of photogenerated charge carriers, reduced aggregation of Cu2O and the synergistic effect of the P-doped carbon/Cu2O structures. This work demonstrates a facile and promising approach for designing low cost, highly stable and efficient heterostructured photocatalysts that can be applicable for energy and environmental applications. |
| Starting Page | 6062 |
| Ending Page | 6079 |
| Page Count | 18 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C8TA12544A |
| Volume Number | 7 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c8/ta/c8ta12544a/c8ta12544a1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C8TA12544A |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
