Type-Ⅰ hetero-junction of BiOI-BiO2-x anchored on Ni foam accelerating charge separation and transfer for efficiently purifying hazardous wastewater

Wang, Shaomang; An, Wen; Yuan, Guanming; Zheng, Zhiqian; Hu, Zhihao; Wang, Haoran; Li, Zhongyu

doi:10.1016/j.jphotochem.2021.113705

Cited by 17 publications

(7 citation statements)

References 50 publications

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“…This helps the migration of photogenerated carriers. [42] According to the above analysis, the introduction of NiO can effectively reduce the resistance of electron conversion and suppress the recombination of electron-hole pairs, thereby enhancing the photocatalytic activity.…”

Section: Photoelectric Property Analysismentioning

confidence: 99%

Visible light‐driven Z‐scheme NiO/BiO_2−x heterojunction for efficient degradation of organic pollutants in water

Shi

Tian

et al. 2022

Applied Organom Chemis

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In this study, Z-scheme NiO/BiO 2Àx heterojunction was successfully constructed by hydrothermal method, which can maintain strong redox potential and excellent visible light response and effectively improve the separation efficiency of photogenerated carrier. Under visible irradiation, the impact of different contents of NiO in NiO/BiO 2Àx on photocatalytic activity was explored, and the results shown that 3-NiO/BiO 2Àx had the highest photocatalytic activity. The degradation rate of 3-NiO/BiO 2Àx for methyl orange (MO) was 7.69 times and 19.7 times higher than pure BiO 2Àx and NiO, respectively. Moreover, the degradation rate of 3-NiO/BiO 2Àx for ciprofloxacin (CIP) was 7.54 times and 60.8 times higher than that of the pure BiO 2Àx and NiO, respectively. NiO/BiO 2Àx heterojunction can be used in the field of wastewater treatment due to their excellent degradation activity for organic pollutants.

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Section: Photoelectric Property Analysismentioning

confidence: 99%

Visible light‐driven Z‐scheme NiO/BiO_2−x heterojunction for efficient degradation of organic pollutants in water

Shi

Tian

et al. 2022

Applied Organom Chemis

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“…Under the irradiation of visible light, electrons and holes are generated on the CB and VB of BiO 2À X and Ag 3 PO 4 . [25,28] If the BOA composite follows a type II heterojunction, since the E CB of BiO 2À X is more negative than Ag 3 PO 4 , the E VB of Ag 3 PO 4 is more positive than BiO 2À X , the photogenerated electrons are more easily transferred from BiO 2À X to the CB of Ag 3 PO 4 , and the holes are transferred from Ag 3 PO 4 to the VB of BiO 2À X , thus forming a built-in potential field. [32] However, the E CB of Ag 3 PO 4 and the E VB of BiO 2À X are more negative than the standard redox potential of •O 2 À /O 2 , which is À 0.33 eV, [26] and the standard redox potential of •OH/À OH, which is 1.99 eV, so they can not produce •O 2 À and •OH.…”

Section: Photocatalytic Mechanismmentioning

confidence: 99%

“…Yue et al [24] prepared m-Bi 2 O 4 /NCDs all solid direct Z-scheme photocatalyst by hydrothermal method, showing good photocatalytic degradation activity for MO and phenol. Wang et al [25] attached about 70 mg of BiOIÀ BiO 2À x powder to foam nickel, and under 300 W xenon lamp irradiation, the degradation rate of RhB reached 97 %. Chen et al [26] prepared BiO 2À X /AgBiO 3 composite by two-step hydrothermal method.…”

Section: Introductionmentioning

confidence: 99%

“…In this experiment, Z-scheme BiO 2À X /Ag 3 PO 4 photocatalysts with defective structures were prepared. Compared with the previously reported work on degrading a single pollutant, [24,25,31] the experiment covers organic dyes (MO) and two different types of antibiotics (TC, CIP) for a wider range of applications. Under visible light irradiation, the photocatalyst with an optimal ratio of 1.5 BOA exhibited excellent photocatalytic degradation performance for MO, TC and CIP, and maintained good structural stability and cycling rate after five cycles.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Performance and Degradation Pathways of Z‐Scheme BiO_2−X−Ag₃PO₄ Photocatalysts with Oxygen‐Deficient Structures

Han,

Jiang,

Zhao

et al. 2023

ChemistrySelect

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It is a practical way to raise the efficiency of photocatalysis by using oxygen vacancy defect modified materials. In this experiment, a Z‐scheme BOA composite photocatalyst with defect structure was prepared by hydrothermal in situ precipitation method. The optimal ratio of 1.5 BOA showed excellent photocatalytic degradation performance for MO, TC and CIP under visible light irradiation, and maintained good structural stability and circulation rate after five cycles. The increased photocatalytic activity of the composite can be explained to the heterojunction interface‘s synergistic effects and the quicker electron hole transit rate caused by the surface oxygen vacancy defect. XPS and EPR confirmed the existence of anoxic structure in the composite, PL and photocurrent confirmed the high electron hole transfer rate. The active species that contributed to the degradation process were validated by the active species capture experiment and ESR. LC–MS speculated the possible degradation path of CIP. Finally speculated the reaction mechanism of Z‐scheme BOA composite photocatalyst. Using the anoxic structure of BiO2−X to form a Z‐scheme heterostructure with Ag3PO4, the oxygen vacancy as the electron capture center and active site is conducive to improving the photogenerated electron transfer rate, thereby improving the structural stability and photocatalytic performance of the complex.

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“…It assists the movement of charge carriers. [67,68] As a result, the introduction of MoS 2 can successfully diminish the resistance of electron transformation and prevent the recombination of charge carriers, by that the photocatalytic activity increases.…”

Section: Optical Properties Of Cecoo 3 /Mos 2 Heterostructuresmentioning

confidence: 99%

Enhanced photocatalytic conversion of organic dyes using CeCoO₃/MoS₂ heterojunction as a highly effective visible‐light‐driven photocatalyst

Ghobadifard

Feizi

Mohebbi

2022

Applied Organom Chemis

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The CeCoO3/MoS2 heterojunction was successfully prepared through the hydrothermal method. The synthesized heterojunction structure was characterized by various techniques and applied to the conversion of methylene blue (MB) under irradiation of visible light. To characterize the new heterojunction structure, Fourier transformed infrared (FT‐IR), field emission scanning electron microscope (FE‐SEM), energy‐dispersive X‐ray spectroscopy (EDXS), X‐ray diffraction (XRD), photoluminescence spectroscopy (PL), differential reflectance spectroscopy (DRS), and transmission electron microscopy (TEM) analyses were used. The FE‐SEM images illustrated the successful deposition of MoS2 flower‐like on the surface of CeCoO3 perovskite with 46 nm as an average size. The influence of the amount of catalyst, temperature, pH, and electron acceptor were investigated. By CeCoO3/MoS2 heterostructures photocatalyst, the conversion rate of MB reached 98% within 20 min, whereas by CeCoO3 perovskite no significant conversion was observed in MB. The higher photocatalytic performance of CeCoO3/MoS2 heterostructures is assigned to their lower charge recombination compared to CeCoO3 perovskite. Moreover, the photocatalytic mechanism and recycling experiments of CeCoO3/MoS2 heterostructures are discussed in detail. The CeCoO3/MoS2 heterostructures are thus promising photocatalysts for the cleanup of polluted water.

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Type-Ⅰ hetero-junction of BiOI-BiO2-x anchored on Ni foam accelerating charge separation and transfer for efficiently purifying hazardous wastewater

Cited by 17 publications

References 50 publications

Visible light‐driven Z‐scheme NiO/BiO_2−x heterojunction for efficient degradation of organic pollutants in water

Visible light‐driven Z‐scheme NiO/BiO_2−x heterojunction for efficient degradation of organic pollutants in water

Photocatalytic Performance and Degradation Pathways of Z‐Scheme BiO_2−X−Ag₃PO₄ Photocatalysts with Oxygen‐Deficient Structures

Enhanced photocatalytic conversion of organic dyes using CeCoO₃/MoS₂ heterojunction as a highly effective visible‐light‐driven photocatalyst

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Type-Ⅰ hetero-junction of BiOI-BiO2-x anchored on Ni foam accelerating charge separation and transfer for efficiently purifying hazardous wastewater

Cited by 17 publications

References 50 publications

Visible light‐driven Z‐scheme NiO/BiO2−x heterojunction for efficient degradation of organic pollutants in water

Visible light‐driven Z‐scheme NiO/BiO2−x heterojunction for efficient degradation of organic pollutants in water

Photocatalytic Performance and Degradation Pathways of Z‐Scheme BiO2−X−Ag3PO4 Photocatalysts with Oxygen‐Deficient Structures

Enhanced photocatalytic conversion of organic dyes using CeCoO3/MoS2 heterojunction as a highly effective visible‐light‐driven photocatalyst

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Product

Resources

About

Visible light‐driven Z‐scheme NiO/BiO_2−x heterojunction for efficient degradation of organic pollutants in water

Visible light‐driven Z‐scheme NiO/BiO_2−x heterojunction for efficient degradation of organic pollutants in water

Photocatalytic Performance and Degradation Pathways of Z‐Scheme BiO_2−X−Ag₃PO₄ Photocatalysts with Oxygen‐Deficient Structures

Enhanced photocatalytic conversion of organic dyes using CeCoO₃/MoS₂ heterojunction as a highly effective visible‐light‐driven photocatalyst