ORCID Profile
0000-0002-0434-3188
Current Organisation
Xiamen University
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Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2CC06563K
Abstract: UiO-66-NH 2 is partially quaternized to produce UiO-66-N(CH 3 ) 3 + , whose photocatalytic activity for Cr( vi ) reduction is greatly boosted by the synergy of LLCT and LMCT path. This facile and scalable one-step strategy demonstrates general applicability.
Publisher: Wiley
Date: 14-11-2017
DOI: 10.1002/APP.44570
Publisher: Wiley
Date: 10-07-2018
Abstract: Regenerable, high-efficiency salt sorption materials are highly desirable for water treatment. Here, a thermoresponsive, hoteric metal-organic framework (MOF) material is reported that can adsorb multiple salts from saline water at room temperature and effectively release the adsorbed salts into water at elevated temperature (e.g., 80 °C). The hoteric MOF, integrated with both cation-binding carboxylic groups and anion-binding tertiary amine groups, is synthesized by introducing a polymer with tertiary amine groups into the cavities of a water-stable MOF such as MIL-121 with carboxylic groups inside its frameworks. The hoterized MIL-121 exhibits excellent salt adsorption properties, showing stable adsorption-desorption cycling performances and high LiCl, NaCl, MgCl
Publisher: American Chemical Society (ACS)
Date: 11-09-2023
Publisher: Wiley
Date: 28-08-2019
Abstract: The conversion of renewable plant polyphenol to advanced materials with tailorable properties and various functions is desirable and challenging. In this work, monovalent cation‐phenolic crystals contained K + or Na + ions were synthesized by using plant polyphenol as an organic source in alkaline solution. The crystal structure was resolved, showing a laminar crystal structure with M + as connecting nodes. The morphologies (e.g., rod‐like and spindle‐shaped) and chemical compositions of crystals could be tuned by changing the cations. Interestingly, these polymer crystals exhibited a pH‐driven reversible crystal transformation. They transformed into their protonated crystalline form under acidic conditions (e.g., pH 2) and went back to the cation‐bound crystalline form in alkaline solutions. Furthermore, the crystals proved excellent antioxidants and heavy metal ion adsorbents.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA02256A
Abstract: A 2D scaffold of graphene oxide is formed inside a polymer to assist the fabrication of a defect-free and ultrathin ( nm) selective layer of thermally rearranged polybenzoxazole- co -imide membrane for energy-efficient CO 2 separation.
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 07-2016
Publisher: American Chemical Society (ACS)
Date: 06-01-2016
Abstract: Herein, we report for the first time on the fabrication of a robust, thermoresponsive polymer membrane produced by the combination of an elastic polyurethane (TPU) microfiber web and poly(N-isopropylacrylamide) (PNIPAM). PNIPAM hydrogel is evenly coated on the surface of TPU microfibers, and thus, the wettability of TPU-PNIPAM membrane is lified by taking advantage of the hierarchical structure and increased surface roughness. The TPU-PNIPAM membrane possesses switchable superhydrophilicity and superhydrophobicity as the temperature of membrane changes from 25 to 45 °C. The composite membrane is shown successfully able to separate a 1 wt % oil-in-water emulsion and 1 wt % water-in-oil emulsion at 25 and 45 °C, respectively, with a high separation efficiency of ≥99.26%. Furthermore, the composite membranes show excellent mechanical properties, and they are highly flexible and mechanically tough. The smart composite membranes reported here have shown great potential for further development for practical high-efficiency oil-water separations.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 02-02-2018
Abstract: Subnanometer metal organic framework pores can selectively transport alkali metal ions of the same valence and similar sizes.
Publisher: The Royal Society of Chemistry
Date: 16-04-2019
DOI: 10.1039/9781788016377-00362
Abstract: Oil–water separation remains key in the development of technology for a range of applications. In this chapter, thermally responsive membranes with switchable superwettabilities used for controllable oil–water separation will be discussed. Superwetting membranes have been shown to be energy-efficient and cost-effective for the separation of oil–water mixtures or oil–water emulsions because the separation mechanism is based on the different interfacial effects of oil or water on the superwetting surface. These membranes show not only excellent separation efficiency, but also ultrahigh permeation flux. In recent years, on–off switchable separation of oil–water mixtures, separation of different kinds of oil-in-water emulsions and water-in-oil emulsions with the same membrane, and tuneable permeation flux have been achieved by introduction of a thermally responsive ability into the superwetting membranes. The challenges in this area are also outlined for further development of thermo-responsive membranes with superwetting surfaces for controllable oil–water separation and practical applications.
Publisher: Springer Science and Business Media LLC
Date: 10-08-2020
Publisher: Elsevier BV
Date: 06-2013
Publisher: American Chemical Society (ACS)
Date: 09-12-2020
Publisher: American Chemical Society (ACS)
Date: 27-07-2023
Publisher: American Chemical Society (ACS)
Date: 03-01-2017
No related grants have been discovered for Ranwen Ou.