Bryophyllum pinnatum mediated eco-friendly synthesized porous microstructures of self-assembled Co-doped ZnO nanoparticles for methylene blue removal

被引：1

作者：

Sapehia, Rahul ^{[1
]}

Kumar, Vishal ^{[1
]}

Kumar, Ankush ^{[1
]}

Aanchal

Dhiman, Vikas ^{[1
]}

机构：

[1] Govt Coll Dhaliara, Dhanotu Balla, Himachal Prades, India

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2024年 / 167卷

关键词：

Photocatalysis; Plant extract-mediated synthesis; Porous structures; Co -doped ZnO; Methylene blue; Dye degradation; PHOTOCATALYTIC DEGRADATION; TEXTILE DYES; PHOTODEGRADATION; EFFICIENCY;

D O I：

10.1016/j.inoche.2024.112789

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cobalt-doped ZnO nanoparticles (Co-ZnO NPs) were synthesized using a phytoextract mediated technique with varying concentrations of Co (2.5, 5.0, and 7.5 at.%), employing Bryophyllum pinnatum leaf extract as the stabilizing/capping agent. XRD analysis revealed that the synthesized Co-ZnO crystallize in a wurtzite crystalline phase with P63mc space group. FE-SEM imaging depicted the self-assembly of nanoparticles, forming porous microstructures. UV-Visible spectra analysis indicated a gradual decrease in the bandgap energy of the ZnO lattice with increasing Co concentration. Additionally, by examining the photocatalytic removal of methylene blue (MB), the photocatalytic activity of the Co-ZnO NPs was assessed. Results showed that Co-ZnO NPs with 5 % Co exhibited the highest photocatalytic activity, suggesting an optimal Co dopant concentration that minimizes the recombination of photogenerated charge carriers compared to other samples. Under sunlight exposure, CoZnO NPs with 5 % Co demonstrated effective photocatalytic activity, achieving the degradation of 98.08 % of a 10 mg/L MB solution within 60 min using a 1.2 g/L dosage, with a rate constant of 0.0582 min-1.

引用

页数：10