Investigate the suitability of g-C3N4 nanosheets ornamented with BiOI nanoflowers for photocatalytic dye degradation and PEC water splitting

被引:33
|
作者
Velusamy, P. [1 ,2 ]
Liu, Xinghui [1 ,3 ]
Sathiya, M. [4 ]
Alsaiari, Norah Salem [5 ]
Alzahrani, Fatimah Mohammed [5 ]
Nazir, M. Tariq [6 ]
Elamurugu, Elangovan [7 ]
Pandian, M. Senthil [8 ]
Zhang, Fuchun [1 ]
机构
[1] Yanan Univ, Sch Phys & Elect Informat, Yanan 716000, Peoples R China
[2] Thiagarajar Coll Engn, Dept Phys, Madurai 625015, Tamil Nadu, India
[3] Saveetha Inst Med & Tech Sci SIMTS, Saveetha Sch Engn, Dept Mat Phys, Chennai 602105, Tamilnadu, India
[4] Madurai Kamaraj Univ, Thiagarajar Coll, Dept Chem, Madurai 625009, Tamil Nadu, India
[5] Princess Nourah bint Abdulrahman Univ, Coll Sci, Dept Chem, POB 11671, Riyadh 84428, Saudi Arabia
[6] Univ New South Wales, Sch Mfg Engn, Sydney, NSW 2052, Australia
[7] SRM Inst Sci & Technol, Coll Engn & Technol, Dept Phys & Nanotechnol, iDARE Lab, Chennai 603203, Tamilnadu, India
[8] SSN Coll Engn, Res Ctr, Chennai 603110, Tamil Nadu, India
基金
中国国家自然科学基金;
关键词
Nano-heterostructure; PEC; Solvothermal synthesis; Methyl red; Pollutant degradation; HETEROJUNCTION; CARBON; HYDROGEN;
D O I
10.1016/j.chemosphere.2023.138007
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The two-step thermal polymerization and solvothermal approach is used to construct nano heterostructures of FCN and BiOI (bismuth oxeye iodide), both of which are Nobel metal-free materials. This work reports the effect nano-heterostructure on the micro-structural, light absorption capability, PEC properties and pollutant degra-dation efficiency of the synthesised heterostructures. The addition to that formation of FCN/BiOI nano-heterostructure enhances the solar light absorption. The FCN/BiOI nano heterostructure shows 10 times higher photocurrent density than the BCN nanostructure and 3.8 time higher that FCN. The FCN/BiOI has a high induced photo-current density (20.17 mA/cm2) and H2 evolution rate (3762 mu mol h-1 cm -2) under solar light illumination (lambda >= 420 nm) in comparison with the other. Furthermore, the photocatalytic performance of this material for the breakdown of methyl red dyes was much greater. Under solar light irradiation, the azo dyes were degraded in 90 min. The FCN/BiOI nano-heterostructure has a higher dye degradation efficiency of 97.91%. The rapid transport of photo-induced electrons in the FCN/BiOI nanocomposite is responsible for the improvement in PEC and PC performances. These impressive findings suggest that this nanocomposite might be used to facilitate the PEC water splitting and the PC degradation of MR in the presence of light. The current research provides insight on how to best tailor composition and structure for efficient FCN photo-electrocatalysis water splitting and Methyl red dye degradation.
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页数:12
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