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Congjie Gao

Bio: Congjie Gao is an academic researcher from Zhejiang University of Technology. The author has contributed to research in topics: Membrane & Nanofiltration. The author has an hindex of 67, co-authored 436 publications receiving 15893 citations. Previous affiliations of Congjie Gao include Zhejiang University & Chinese Ministry of Education.


Papers
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TL;DR: In this paper, carboxy-functionalized multi-walled carbon nanotubes (MWNTs) were pre-treated with mixed acids before being modified with diisobutyryl peroxide to enhance their dispersivity and chemical activity.

378 citations

Journal ArticleDOI
TL;DR: In this paper, multi-walled carbon nanotubes (MWNTs) functionalized by isocyanate and isophthaloyl chloride groups were synthesized via the reaction between carboxylated carbon Nanotubes and 5-isocyanato-isophthoric chloride (ICICIC).

321 citations

Journal ArticleDOI
TL;DR: High-flux positively charged nanocomposite nanofiltration membranes were exploited by uniformly embedding poly(dopamine) modified multiwall carbon nanotubes (PDA-MWCNTs) in polyamide thin-film composite membranes, leading to significantly improved water permeability.
Abstract: The poor dispensability of pristine carbon nanotubes in water impedes their implications in thin-film nanocomposite membranes for crucial utilities such as water purification. In this work, high-flux positively charged nanocomposite nanofiltration membranes were exploited by uniformly embedding poly(dopamine) modified multiwall carbon nanotubes (PDA-MWCNTs) in polyamide thin-film composite membranes. With poly(dopamine) modification, fine dispersion of MWCNTs in polyethyleneimine (PEI) aqueous solutions was achieved, which was interracially polymerized with trimesoyl chloride (TMC) n-hexane solutions to prepare nanocomposite membranes. The compatibility and interactions between modified MWCNTs and polyamide matrix were enhanced, attributed to the poly(dopamine) coatings on MWCNT surfaces, leading to significantly improved water permeability. At optimized conditions, pure water permeability of the PEI/PDA-MWCNTs/TMC nanofiltration membrane (M-4) was 15.32 L m–2 h–1 bar–1, which was ∼1.6 times increased com...

295 citations

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TL;DR: This review will highlight the recent progress in antifouling membrane surface construction with a focus on five promising classes of chemistries: bioinspired adhesion chemistry, supramolecular chemistry, mineralization chemistry, click chemistry and coupling chemistry.

287 citations

Journal ArticleDOI
TL;DR: In this article, the performance of asymmetric polysulfone membranes was evaluated in terms of pure water flux (PWF), protein rejection, porosity, contact angle, tensile strength, and elongation at break.

285 citations


Cited by
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Journal ArticleDOI
TL;DR: The unique advances on ultrathin 2D nanomaterials are introduced, followed by the description of their composition and crystal structures, and the assortments of their synthetic methods are summarized.
Abstract: Since the discovery of mechanically exfoliated graphene in 2004, research on ultrathin two-dimensional (2D) nanomaterials has grown exponentially in the fields of condensed matter physics, material science, chemistry, and nanotechnology. Highlighting their compelling physical, chemical, electronic, and optical properties, as well as their various potential applications, in this Review, we summarize the state-of-art progress on the ultrathin 2D nanomaterials with a particular emphasis on their recent advances. First, we introduce the unique advances on ultrathin 2D nanomaterials, followed by the description of their composition and crystal structures. The assortments of their synthetic methods are then summarized, including insights on their advantages and limitations, alongside some recommendations on suitable characterization techniques. We also discuss in detail the utilization of these ultrathin 2D nanomaterials for wide ranges of potential applications among the electronics/optoelectronics, electrocat...

3,628 citations

Journal ArticleDOI
TL;DR: Key parameters of an RO process and process modifications due to feed water characteristics are brought to light by a direct comparison of seawater and brackish water RO systems.

2,665 citations

Journal ArticleDOI
TL;DR: A review of the use of the TiO 2 photocatalyst for remediation and decontamination of wastewater, report the recent work done, important achievements and problems is presented in this paper, however, a lot more is needed from engineering design and modelling for successful application of the laboratory scale techniques to large scale operation.
Abstract: Even though heterogeneous photocatalysis appeared in many forms, photodegradation of organic pollutants has recently been the most widely investigated. By far, titania has played a much larger role in this scenario compared to other semiconductor photocatalysts due to its cost effectiveness, inert nature and photostability. Extensive literature analysis has shown many possibilities of improving the efficiency of photodecomposition over titania by combining the photoprocess with either physical or chemical operations. The resulting combined processes revealed a flexible line of action for wastewater treatment technologies. The choice of treatment method usually depends upon the composition of the wastewater. However, a lot more is needed from engineering design and modelling for successful application of the laboratory scale techniques to large-scale operation. The present review paper seeks to offer an overview of the dramatic trend in the use of the TiO 2 photocatalyst for remediation and decontamination of wastewater, report the recent work done, important achievements and problems.

2,573 citations

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TL;DR: In this article, molecular-level design approaches for membrane materials, focusing on how these materials address the urgent requirements of water treatment applications, are reviewed for water scarcity and the pollution of aquatic environments.
Abstract: Membranes have an increasingly important role in alleviating water scarcity and the pollution of aquatic environments. Promising molecular-level design approaches are reviewed for membrane materials, focusing on how these materials address the urgent requirements of water treatment applications.

1,900 citations