Remarkable photo-catalytic degradation of malachite green by nickel doped bismuth selenide under visible light irradiation
Source abstract
Abstract
Abstract Bismuth selenide (Bi 2 Se 3 ) and nickel (Ni) doped Bi 2 Se 3 were prepared by a solvothermal approach to explore the photo-catalytic performance of the materials in degradation of malachite green (MG). The presence of nickel was confirmed by X-ray photoelectron spectroscopy (XPS) measurement in doped Bi 2 Se 3 . The results showed that the nickel doping played an important role in microstructure and photo-catalytic activity of the samples. Nickel doped Bi 2 Se 3 sample exhibited higher photo-catalytic activity than that of the pure Bi 2 Se 3 sample under visible-light irradiation. The photo-catalytic degradation followed first-order reaction kinetics. Fast degradation kinetics and complete (100% in 5 min of visible light irradiation) removal of MG was achieved by nickel doped Bi 2 Se 3 in presence of hydrogen peroxide (H 2 O 2 ) due to modification of band gap energies leading to suppression of photo-generated electron-hole recombination.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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