Oxygen vacancy mediated surface charge redistribution of Cu-substituted LaFeO3 for degradation of bisphenol A by efficient decomposition of H2O2

Pan, Keliang; Yang, Changzhu; Hu, Jingping; Yang, Wenlong; Liu, Bingchuan; Yang, Jiakuan; Liang, Sha; Xiao, Keke; Hou, Huijie

doi:10.1016/j.jhazmat.2020.122072

Cited by 71 publications

(34 citation statements)

References 59 publications

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“…In a recent effort, Cu-substituted LaFeO 3 perovskite was used for the degradation of BPA ( Pan et al, 2020 ). Using a citric acid complexation method ( Zhao et al, 2016 ), by altering the copper doping ratio they demonstrated the synthesis of novel Cu-substituted LaFeO 3 catalysts.…”

Section: Various Fe-based Materials Related To the Fenton Processmentioning

confidence: 99%

“…Theoretical calculations showed an approximate 0.05-angstrom decrease in the Fe-O, and La-O bond lengths after copper substitution and that also portrays the volume contraction of the LaCu x Fe 1-x O 3-δ unit cell. These parameters undoubtedly suggested that copper got incorporated into the LaFeO 3 perovskite replacing Fe in the structure ( Pan et al, 2020 ).…”

Section: Various Fe-based Materials Related To the Fenton Processmentioning

confidence: 99%

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Heterogeneous Fenton catalysts: A review of recent advances

Thomas

Dionysiou

Pillai

2021

Journal of Hazardous Materials

490

162

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Heterogeneous Fenton catalysts are emerging as excellent systems for applications related to water purification. In this review, recent trends in the synthesis and application of heterogeneous Fenton catalysts for the abatement of organic pollutants and disinfection of microorganisms are discussed. It is noted that as the complexity of cell wall increases, the resistance level towards various disinfectants increases and it requires either harsh conditions or longer exposure time for the complete disinfection. In case of viruses, enveloped viruses ( e.g. SARS-CoV-2) are found to be more susceptible to disinfectants than the non-enveloped viruses. The introduction of plasmonic systems with the Fenton catalysts broaden the visible light absorption efficiency of the hybrid material, and incorporation of semiconductor material improves the rate of regeneration of Fe(II) from Fe(III). A special emphasis is given to the use of Fenton catalysts for antibacterial applications. Composite materials of magnetite and ferrites remain a champion in this area because of their easy separation and reuse, owing to their magnetic properties. Iron minerals supported on clay materials, perovskites, carbon materials, zeolites and metal-organic frameworks (MOFs) dramatically increase the catalytic degradation rate of contaminants by providing high surface area, good mechanical stability, and improved electron transfer. Moreover, insights to the zero-valent iron and its capacity to remove a wide range of organic pollutants, heavy metals and bacterial contamination are also discussed. Real world applications and the role of natural organic matter are summarised. Parameter optimisation (e.g. light source, dosage of catalyst, concentration of H 2 O 2 etc. ), sustainable models for the reusability or recyclability of the catalyst and the theoretical understanding and mechanistic aspects of the photo-Fenton process are also explained. Additionally, this review summarises the opportunities and future directions of research in the heterogeneous Fenton catalysis.

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Section: Various Fe-based Materials Related To the Fenton Processmentioning

confidence: 99%

Section: Various Fe-based Materials Related To the Fenton Processmentioning

confidence: 99%

Heterogeneous Fenton catalysts: A review of recent advances

Thomas

Dionysiou

Pillai

2021

Journal of Hazardous Materials

490

162

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“…Considering the results, it could be confirmed that initial hydrogen peroxide concentration is an important factor for the produced hydrogen amount from sucrose model solution in the presence of GLFO since it has a main effect statistically. The metal oxides have positively charged surfaces and hence, as the pH of solution decreases, the adsorbed H 2 O 2 concentration on the surface of metal oxides enhances [36] . For instance, the obtained hydrogen amounts from sucrose model solution using GLFO and 15 mM of hydrogen peroxide are 3459.85 and 3305.83 μmol/g cat at 3 and 7.5 of pH, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The metal oxides have positively charged surfaces and hence, as the pH of solution decreases, the adsorbed H 2 O 2 concentration on the surface of metal oxides enhances. [36] For instance, the obtained hydrogen amounts from sucrose model solution using GLFO and 15 mM of hydrogen peroxide are 3459.85 and 3305.83 μmol/g cat at 3 and 7.5 of pH, respectively. Additionally, the obtained hydrogen amounts from real sugar beet wastewater using GLFO and 15 mM of hydrogen peroxide are 6688.67 and 5060.51 μmol/g cat at 3 and 7.5 of pH, respectively.…”

Section: All Produced Gasesmentioning

confidence: 99%

Photocatalytic Hydrogen Energy Evolution from Sugar Beet Wastewater

Orak

Yuksel

2021

ChemistrySelect

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Hydrogen is a clean, environmentally friendly, storable, and sustainable green energy source as well as a potential fuel. It could be produced from various biomass, wastewater, or other sources by different processes. In this study, hydrogen was evolved from sucrose model solution and real sugar beet wastewater by photocatalytic oxidation using a perovskite catalyst under solar light irradiation. In this context, firstly, the graphene supported LaFeO3 (GLFO) was synthesized and then, a characterization study shows that GLFO is successfully synthesized. To optimize the reaction parameters (pH, catalyst loading, and initial hydrogen peroxide concentration), an experimental matrix was created using the Box Behnken model. Whereas the highest hydrogen evolution from sucrose model solution was observed as 3520 μmol/gcat, the highest hydrogen evolution from sugar beet wastewater was obtained as 7035 μmol/gcat. The highest TOC removal (99.73 %) from sugar beet wastewater was also achieved at the same reaction conditions.

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“…The existence of defects will cause the redistribution of the surface charge of the catalyst, which can not only promote the decomposition efficiency of the substrate, but also accelerate the circulation of metal ions between their respective high and low valence states. 110 Due to the exposure of a large number of atomic active sites on the surface, single-atom catalysts have excellent catalytic properties. 111 Therefore, the development of degradable nanocatalysts, defect-rich nanocatalysts, and singleatom nanocatalysts is of great signicance for metal ion therapy based on biocatalysis.…”

Section: Discussionmentioning

confidence: 99%