Construction of Bi2O3/CuNiFe LDHs composite and its enhanced photocatalytic degradation of lomefloxacin with persulfate under simulated sunlight

Zhang, Huixuan; Nengzi, Li-chao; Wang, Zhongjuan; Zhang, Xinyi; Li, Bo; Cheng, Xiuwen

doi:10.1016/j.jhazmat.2019.121236

Cited by 113 publications

(40 citation statements)

References 73 publications

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“…respectively [7,13]. Figure 10 shows that the photocatalytic activity slightly decreased in the presence of IPA, which implied that the •OH has a little role in photodegradation reaction.…”

Section: Photodegradation Mechanism Of the Samplesmentioning

confidence: 97%

“…Obviously, the prepared materials show only small amounts of BPA adsorption abilities. Under visible-light irradiation, the remove efficiency is very low in the absence of photocatalysts, indicating that single PMS could hardly degrade BPA [7,13,14]. Moreover, WO3 and Bi2WO6 exhibit weak photocatalytic performance with PMS activation, and only 18.1 and 32.0% of BPA are removed within 30 min., respectively.…”

Section: Photocatalytic Performancementioning

confidence: 99%

“…The active radicals that were involved in the photocatalytic degradation of BPA under the BW3 with PMS activation were investigated by the radical trapping experiments. In these process, isopropanol (IPA, 10 mmol/L), ethylenediaminetetraacetic acid disodium salt (EDTA, 10 mmol/L), methanol (MeOH, 10 mmol/L), and benzoquinone (BZQ, 0.1 mmol/L) were severed as the scavengers for hydroxyl radical (•OH), holes (h + ), and sulfate radical (•SO4 − ) and superoxide radical (•O2 − ), respectively [7,13]. Figure 10 shows that the photocatalytic activity slightly decreased in the presence of IPA, which implied that the •OH has a little role in photodegradation reaction.…”

Section: Photodegradation Mechanism Of the Samplesmentioning

confidence: 99%

“…Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) have aroused considerable attention in environmental remediation [5,6]. PMS could be activated to generate sulfate radicals (•SO 4 − ) and hydroxyl radicals (•OH) [7,8]. The •SO 4 − has been found to be a superior alternative for the environmental remediation of organic contaminants, due to its great advantage, including stronger oxidizing properties, higher oxidation selectivity, and more rapid degradation rate, in contrast to the transfer and separation of photogenerated charges of photocatalysts, leading to an enhanced the catalytic performance [7,13,15].…”

Section: Introductionmentioning

confidence: 99%

“…PMS could be activated to generate sulfate radicals (•SO 4 − ) and hydroxyl radicals (•OH) [7,8]. The •SO 4 − has been found to be a superior alternative for the environmental remediation of organic contaminants, due to its great advantage, including stronger oxidizing properties, higher oxidation selectivity, and more rapid degradation rate, in contrast to the transfer and separation of photogenerated charges of photocatalysts, leading to an enhanced the catalytic performance [7,13,15]. However, the application of current photocatalytic materials in PMS activation is far from satisfactory due to its insufficient light absorption, low efficiency of photogenerated charge separation, and limited surface active sites [8,16].…”

Section: Introductionmentioning

confidence: 99%

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Facile Fabrication of Z-Scheme Bi2WO6/WO3 Composites for Efficient Photodegradation of Bisphenol A with Peroxymonosulfate Activation

et al. 2020

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The rational fabrication of direct Z-scheme heterostructures photocatalysts is a pivotal strategy to boost the interfacial charge migration and separation. Herein, direct Z-scheme Bi2WO6/WO3 composites were rationally fabricated for the degradation of bisphenol A combined with the activation of peroxymonosulfate (PMS). The tight interface contact between Bi2WO6 and WO3 was successfully formed by the in situ epitaxial growth of ultrathin Bi2WO6 nanosheets at the surface of WO3 nanorods. The Bi2WO6/WO3 composite presented highly efficient catalytic performance toward degradation of BPA with PMS activation as compared to the WO3 and Bi2WO6. PMS can dramatically boost the photocatalytic activity of the composites. Moreover, the results of active radical scavenging experiments revealed that h+, •O2−, and •SO4− are critical active species in the photodegradation reaction. Finally, the photocatalytic mechanism for the degradation of BPA is also discussed in detail. The great improvement of photocatalytic performance should be ascribed to the effective formation of the direct Z-scheme heterojunctions between Bi2WO6 and WO3, resulting in improved light absorption, an efficient transfer and separation of photoinduced charge carriers, and a considerable amount of the electrons and holes with strong reduction and oxidation abilities. The study might provide new inspirations to design and construct heterostructured nanomaterials with outstanding photoactivity for environmental remediation.

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Section: Photodegradation Mechanism Of the Samplesmentioning

confidence: 97%

Section: Photocatalytic Performancementioning

confidence: 99%

Section: Photodegradation Mechanism Of the Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Facile Fabrication of Z-Scheme Bi2WO6/WO3 Composites for Efficient Photodegradation of Bisphenol A with Peroxymonosulfate Activation

et al. 2020

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Research Progress on Cu₂O‐based Type‐II Heterojunction Photocatalysts for Photocatalytic Removal of Antibiotics

Wang

Yang

et al. 2022

ChemistrySelect

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Photocatalytic degradation technology, using solar energy as the driving force, is considered the most possible alternative to remediate environmental pollution. And it is essential to find a stable and efficient photocatalyst. As promising semiconductor-based photocatalysts, Cu 2 O has acquired massive attention owning to its high conduction band energy, superior visiblelight response-ability, low cost, eco-friendly, and abundance. However, the application of origin Cu 2 O faces severe problems due to its photocorrosion and low photoinduced carrier separation. Consequently, it is necessary to improve its photo-stability and photocatalytic activity by carrying out numerous modification strategies, such as heterostructure construction. Herein, we first summarize the classification and operation principles of Cu 2 O-based type-II heterojunction. Then, the application of the Cu 2 O-based type-II heterojunction photocatalysts for the removal of tetracyclines, quinolones, and sulfonamides have been discussed. Finally, the pressing issues and perspectives in Cu 2 O-based type-II heterojunction photocatalysts application for degrading antibiotics have prospected.

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Application of visible light active photocatalysis for water contaminants: A review

Sun

O’Connell

2022

Water Environment Research

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Organic water pollutants are ubiquitous in the natural environment arising from domestic products as well as current and legacy industrial processes. Many of these organic water pollutants are recalcitrant and only partially degraded using conventional water and wastewater treatment processes. In recent decades, visible light active photocatalyst has gained attention as a non‐conventional alternative for the removal of organic pollutants during water treatment, including industrial wastewater and drinking water treatment. This paper reviews the current state of research on the use of visible light active photocatalysts, their modified methods, efficacy, and pilot‐scale applications for the degradation of organic pollutants in water supplies and waste streams. Initially, the general mechanism of the visible light active photocatalyst is evaluated, followed by an overview of the major synthesis techniques. Because few of these photocatalysts are commercialized, particular attention was given to summarizing the different types of visible light active photocatalysts developed to the pilot‐scale stage for practical application and commercialization. The organic pollutant degradation ability of these visible light active photocatalysts was found to be considerable and in many cases comparable with existing and commercially available advanced oxidation processes. Finally, this review concludes with a summary of current achievements and challenges as well as possible directions for further research. Practitioner Points Visible light active photocatalysis is a promising advanced oxidation process (AOP) for the reduction of organic water pollutants. Various mechanisms of photocatalysis using visible light active materials are identified and discussed. Many recent photocatalysts are synthesized from renewable materials that are more sustainable for applications in the 21st century. Only a small number of pilot‐scale applications exist and these are outlined in this review.

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Construction of Bi2O3/CuNiFe LDHs composite and its enhanced photocatalytic degradation of lomefloxacin with persulfate under simulated sunlight

Cited by 113 publications

References 73 publications

Facile Fabrication of Z-Scheme Bi2WO6/WO3 Composites for Efficient Photodegradation of Bisphenol A with Peroxymonosulfate Activation

Facile Fabrication of Z-Scheme Bi2WO6/WO3 Composites for Efficient Photodegradation of Bisphenol A with Peroxymonosulfate Activation

Research Progress on Cu₂O‐based Type‐II Heterojunction Photocatalysts for Photocatalytic Removal of Antibiotics

Application of visible light active photocatalysis for water contaminants: A review

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Construction of Bi2O3/CuNiFe LDHs composite and its enhanced photocatalytic degradation of lomefloxacin with persulfate under simulated sunlight

Cited by 113 publications

References 73 publications

Facile Fabrication of Z-Scheme Bi2WO6/WO3 Composites for Efficient Photodegradation of Bisphenol A with Peroxymonosulfate Activation

Facile Fabrication of Z-Scheme Bi2WO6/WO3 Composites for Efficient Photodegradation of Bisphenol A with Peroxymonosulfate Activation

Research Progress on Cu2O‐based Type‐II Heterojunction Photocatalysts for Photocatalytic Removal of Antibiotics

Application of visible light active photocatalysis for water contaminants: A review

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Research Progress on Cu₂O‐based Type‐II Heterojunction Photocatalysts for Photocatalytic Removal of Antibiotics