Single Ag atom engineered 3D-MnO2 porous hollow microspheres for rapid photothermocatalytic inactivation of E. coli under solar light

Xia, Dehua; Liu, Huadan; Xu, Bohong; Wang, Yunchen; Liao, Yuhong; Huang, Yajing; Ye, Liqun; He, Chun; Wong, Po Keung; Qiu, Rongliang

doi:10.1016/j.apcatb.2018.12.056

Cited by 152 publications

(78 citation statements)

References 54 publications

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“…Fig. S4 shows that the current of limonite in TC solutions was higher than that in deionized water, proving that the electron transfer was promoted in limonite-TC system (Xia et al, 2019 (Liu et al, 2012a). Fig.…”

Section: Degradationmentioning

confidence: 91%

The Removal Performance and Mechanisms of Tetracycline Over Mn-rich Limonite

Wang

Zou

et al. 2021

Preprint

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Naturally occurring Mn-rich limonite mainly composed of goethite and manganese oxides was used to remove tetracycline (TC) from the aqueous solution. The physicochemical properties of limonite were illustrated by various characterization techniques such as XRD, FE-TEM, XPS and FT-IR. The effects of dosage, initial solution pH, temperature and coexisting anions on TC removal were investigated. The results showed that TC could be efficiently adsorbed by limonite with high specific surface area and mesoporous structure through electrostatic interaction and complexation. The co-existence of PO43- inhibited the adsorption of TC by limonite due to the competition with TC for active sites. In addition, manganese oxides exhibited oxidative properties to TC, and the singlet oxygen (1O2) generated during the redox reaction was responsible for TC degradation. Furthermore, the regenerated limonite displayed an efficient recycling performance after four cycles. This study revealed that the Mn-rich limonite was a promising adsorbent for TC removal from aqueous solutions and promoted the application of natural mineral material in the environmental field.

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Section: Degradationmentioning

confidence: 91%

The Removal Performance and Mechanisms of Tetracycline Over Mn-rich Limonite

Wang

Zou

et al. 2021

Preprint

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“…Stable, nontoxic, cheap, and environmentally compatible MnO 2 has become the most commonly used carrier. [ 402–405 ] He et al. [ 404 ] studied the inactivation of Escherichia coli ( E. coli ) on Ag/MnO 2 with different crystal phases (Ag/α‐MnO 2 , Ag/β‐MnO 2 , Ag/γ‐MnO 2 , and Ag/δ‐MnO 2 ) and found that Ag/β‐MnO 2 showed the best bactericidal activity.…”

Section: Environmental Applicationsmentioning

confidence: 99%

“…Xia et al. [ 402 ] loaded atomic‐level Ag on the surface of MnO 2 porous hollow microspheres (Ag/MnO 2 ) by an oxidation–reduction precipitation pathway and investigated the performance and mechanism of the as‐prepared Ag/MnO 2 sample for E. coli inactivation under sunlight. They found that after being excited by solar light, 0.3% Ag/MnO 2 can inactivate almost all of the 7.11 log 10 cfu mL −1 cells within 10 min.…”

Section: Environmental Applicationsmentioning

confidence: 99%

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MnO₂‐Based Materials for Environmental Applications

et al. 2021

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Manganese dioxide (MnO2) is a promising photo–thermo–electric‐responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2‐based composites via the construction of homojunctions and MnO2/semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2‐based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high‐efficiency MnO2‐based materials for comprehensive environmental applications is provided.

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“…Several articles have been published where "reduced" manganese oxide (MnOx) has been synthesized pure 96 , or in composite system with metals 97,98,99,100 or other oxides 101,102,103,104,105,106 . Yang et al…”

Section: Mnox Based Systemsmentioning

confidence: 99%