Influence of (Li/Na/K) doping and point defect (VAl, Hi) on the magnetic and photocatalytic performance of AlN: A first-principles study

Wang, Zhichao; Hou, Qingyu; Guan, Yuqin; Sha, Shulin; Chen, Meixu

doi:10.1016/j.matchemphys.2021.124706

Cited by 4 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The band structure of the ZnO NPs consists of a low-energy valence band filled with electrons and a high-energy conduction band not filled with electrons, and there are gaps between the valence band and conduction band. When the ZnO photocatalyst is irradiated by light with an energy greater than or equal to the band gap, the electron absorption energy in the valence band is excited to transition to the conduction band, and the corresponding holes are generated in the valence band, forming electron-hole pairs [26][27][28]. The electron-hole pair migrates to the particle surface under the action of ) have strong oxidation abilities and can react with organic pollutants.…”

Section: Photocatalytic Mechanism Of Zno Npsmentioning

confidence: 99%

Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol

Wang

Yang

Liu

et al. 2021

Water

View full text Add to dashboard Cite

The photocatalytic degradation of organic pollutants is an effective method of controlling environmental pollution. ZnO nanoparticles (ZnO NPs) were prepared by the solvothermal method and characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV–visible diffuse reflectance spectroscopy (UV–Vis DRS). The results showed that the ZnO NPs had a uniform size of 25–40 nm, hexagonal wurtzite structure, and a band gap of 2.99 eV. The photocatalytic degradation of methyl orange (MO) and p-nitrophenol (PNP) was used as a model reaction to evaluate the photocatalytic activity of ZnO NPs. The photocatalytic degradation rates (pseudo-first-order kinetics) of MO and PNP were 92% (0.0128 min−1) and 56.2% (0.0042 min−1), respectively, with a 25 W ultraviolet lamp, MO/PNP concentration = 20 mg/L, ZnO NPs dose = 1.5 g/L, and time = 180 min. The photocatalytic mechanism of ZnO NPs and degradation pathways of MO and PNP were also proposed. The results provide valuable information and guidance for the treatment of wastewater via photocatalytic methods.

show abstract

Section: Photocatalytic Mechanism Of Zno Npsmentioning

confidence: 99%