Author
Ning Li
Other affiliations: Harbin Institute of Technology, University of New South Wales
Bio: Ning Li is an academic researcher from Tianjin University. The author has contributed to research in topics: Chemistry & Adsorption. The author has an hindex of 20, co-authored 42 publications receiving 1353 citations. Previous affiliations of Ning Li include Harbin Institute of Technology & University of New South Wales.
Papers
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TL;DR: In this paper, magnetic Fe3O4-MnO2 nanoplates were successfully synthesized by a facile hydrothermal process in order to remove bivalent heavy metals from water.
242 citations
TL;DR: An overview of PPOH system is provided and the future research direction of the system in practical treatment of antibiotic wastewater is outlined and the performance of antibiotic degradation and internal mechanism in the coupled oxidation system are analyzed comprehensively.
199 citations
TL;DR: In this paper, a novel Mn3O4@ZnO/Mn3O 4 composite was designed to remove Cr (VI) and Cr (III) from water by concurrent photocatalysis and adsorption.
Abstract: A novel Mn3O4@ZnO/Mn3O4 composite was designed to remove Cr (VI) and Cr (III) from water by concurrent photocatalysis and adsorption. The Mn3O4@ZnO photocatalyst with core-shell nano-sphere structure, was first fabricated by precisely controlled process using a mild hydrothermal method combined with atomic layer deposition (ALD). The wurtzite ZnO layer was uniformly deposited on hausmannite Mn3O4 surface, which formed a typical II-type heterojunction, separating the photo-generated electron-hole pairs effectively. Hence, rapid Cr (VI) reduction by Mn3O4@ZnO under simulated sunlight irradiation was achieved at 95.3% in 110 min. The pure Mn3O4 as adsorbent could subsequently adsorb the reduced Cr (III) from aqueous solution. Noticeably, the total Cr removal efficiency was enhanced to 92.0% within 70 min by concurrent photocatalysis and adsorption compared to 88.8% even within 120 min in the separate two processes. Mechanism exploration proposed that more active sites on Mn3O4@ZnO surface would be released for continuous photocatalytic reduction of Cr (VI) after the transfer of reduced Cr (III) from Mn3O4@ZnO onto Mn3O4 surface. In addition, the synergy of photocatalysis and adsorption on Cr removal was the strongest at pH = 6.0 and the highest removal efficiency of 96.0% was realized within 70 min. The outstanding synergistic effect of photocatalytic reduction and adsorption makes the innovative Mn3O4@ZnO/Mn3O4 composite a promising candidate for Cr remediation in aquatic environment.
191 citations
TL;DR: In this article, a newly designed Z-scheme g-C3N4@ZnO heterostructure was synthesized by 3D ZnO controllable deposition on 2D C3N 4 nanosheets using thermal atomic layer deposition, which achieved 989% degradation and 728% mineralization of cephalexin within 60min of illumination.
177 citations
TL;DR: A magnetically separable three-dimensional (3D) γ-Fe2O3@ZnO core-shell photocatalyst was successfully fabricated by hydrothermal sintering and a subsequent atomic layer deposition (ALD) method.
154 citations
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TL;DR: In this article, the main advancements in overcoming the barriers accompanied by pure ZnO and the criteria for fabrication of effective visible-light-responsive (ZnO-based) photocatalysts are reviewed.
697 citations
TL;DR: Among the most challenging problems that human beings appear to face are depleting energy sources and increasing environmental pollutions, Heterogeneous photocatalytic processes are the most reward as mentioned in this paper.
Abstract: Among the most challenging problems that human beings appear to face are depleting energy sources and increasing environmental pollutions. Heterogeneous photocatalytic processes are the most reward...
476 citations
TL;DR: In this article, a comprehensive review of metal-organic framework (MOF) containing membranes for water treatment is presented. And the potential environmental application of MOF-containing membranes from four aspects (stability of MOFs, antifouling performance of membranes, compatibility between MOF fillers and polymer matrix, dispersity of nanoparticles in matrix), are analyzed.
401 citations
TL;DR: In this paper, a review of the photocorrosion mechanisms of typical semiconductors and different characterization methods proposed for monitoring the photorecorrosion process of semiconductor-based composite photocatalysts are elaborated.
Abstract: Heterogeneous photocatalysis is a promising strategy for addressing the worldwide environmental pollution and energy shortage issues. However, unlike TiO2 with good photostability, the intrinsic drawback of photoinduced decomposition, i.e., photocorrosion, of semiconductors significantly challenges durable photocatalysis. In this review, the photocorrosion mechanisms of typical semiconductors and different characterization methods proposed for monitoring the photocorrosion process of semiconductor-based composite photocatalysts are elaborated. Dedicated emphasis is put on the strategies for improving the anti-photocorrosion property of semiconductor-based photocatalysts, including modifying the crystal structure or morphology of semiconductors, doping with heteroatoms, hybridizing with various semiconductors and/or cocatalysts, and regulating the photocatalytic reaction conditions. Finally, we cast a personal prospect on the future development of the rational design of corrosion-controlled semiconductor-b...
383 citations
TL;DR: In this paper, a review summarizes the recent technologies used commonly for dye removal from wastewater, such as biological methods, advanced oxidation processes (AOP), electrocoagulation, adsorption, membrane technology, and photocatalytic reactors using novel nanomaterials.
342 citations