Journal
MATERIALS RESEARCH BULLETIN
Volume 138, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2021.111208
Keywords
BiOCl; Doping; Photocatalytic degradation; Visible-light
Categories
Funding
- National Science Foundation of China (NSFC) [51834009, 51801151]
- Natural Science Foundation of Shaanxi Province [2020JZ-47, 2020JM-451]
- Hundred Talent Program of Shaanxi Province
- Key Laboratory Project of Shaanxi Education Department [18JS070, 17JS081]
- Scientific Research Plan Projects of Shaanxi Education Department [18JK0560]
- Shaanxi Province Science Fund for Distinguished Young Scholars [2018JC-027]
- China Postdoctoral Science Foundation [2018M633643XB]
- Key Research and Development Project of Shaanxi Province [2017ZDXM-GY-033, 2017ZDXM-GY-028]
- Key Laboratory Project of Science and Technology Agency [13JS075]
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Doping Ni into BiOCl can significantly improve its photocatalytic performance by modifying the electronic structure. The introduction of Ni narrows the band-gap, forms defect energy levels, results in a red shift in the absorption edge, and enhances absorption in the visible-light range.
Doping modifications can endow BiOCl with dramatically improved photocatalytic performance via modifying the electronic structure. Here, the hierarchical Ni-doped BiOCl microflowers self-assembled by 2D nanosheets were synthesized through a one-step solvothermal method. Notably, the as-obtained Ni-doped BiOCl sample presented a remarkably enhanced photocatalytic degradation activity, totally decomposed Rhodamine B aqueous solution (15 mg/L) within 5 min under visible-light irradiation. Based on the experimental and calculated results, the introduction of Ni can narrow the band-gap and form defect energy levels simultaneously, resulted in a red shift in the absorption edge and much stronger absorption in the visible-light range. In addition, Ni-doped BiOCl exhibits an enhanced photocurrent density and a suppressed peak intensity of PL emission, indicating the efficient transportation and suppressed recombination of photoinduced charge carriers. This study sheds light on a possible application of Ni-doped BiOCl in photocatalytic degradation of organic pollutants under visible-light irradiation and provides a feasible strategy to synthesis of high active Ni-doped BiOX (X = Cl, Br and I) photocatalysts.
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