@article{han_zhang_gao_qian_tan_yang_zhang_cui_li_zhang_2020, title={Superhydrophobic Covalent Organic Frameworks Prepared via Pore Surface Modifications for Functional Coatings under Harsh Conditions}, volume={12}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.9b17319}, abstractNote={Covalent organic frameworks (COFs) have been widely used in catalysis, energy storage, environmental protection, and separation. However, they require a long assembly period (~3 days) and complex synthesis conditions; differences in water resistance have restricted their overall versatility. In this paper, the preparation of COF-DhaTab was optimized, and this process can be easily performed in air. Thus, it is feasible for the scale-up of COF-DhaTab in the near future. The superhydrophobic properties of COF-DhaTab (water contact angle >150°) can be created by regulating the wettability of COF-DhaTab by grafting fluoride. When the grafting degree of fluoride increased to 4.32%, the water contact angle of COFs increased from 0° to more than 150°. The grafted COFs are termed COF-DhaTab Fluoride (COF-DTF). The chemically modified COF-DhaTab maintains its original porosity and crystallinity. The superhydrophobic COF-DTF can be applied to various substrates, e.g., foam, fabric, and glass. These all exhibit outstanding water-repellency, self-healing, and excellent self-cleaning. Importantly, the coating maintains its original superhydrophobicity even under extremely acidic/basic conditions (pH = 114) and toward boiling water (100°C). Furthermore, COF-DTF displays long-term stability and is easily scaled. It is a promising and practical candidate for hydrophobic modifications to various substrates.}, number={2}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Han, Na and Zhang, Zongxuan and Gao, Hongkun and Qian, Yongqiang and Tan, Linli and Yang, Chao and Zhang, Haoran and Cui, Zhenyu and Li, Wei and Zhang, Xingxiang}, year={2020}, month={Jan}, pages={2926–2934} }
 @article{han_zhang_wang_yang_tan_cui_li_zhang_2019, title={Amphiphilic cellulose for enhancing the antifouling and separation performances of poly (acrylonitrile-co-methyl acrylate) ultrafiltration membrane}, volume={591}, ISSN={["1873-3123"]}, DOI={10.1016/j.memsci.2019.117276}, abstractNote={Membrane fouling results in short membrane life and high operating costs, which is a major obstacle in membrane filtration technology. Here, an amphiphilic cellulose (MCC-C16) was synthesized and used as an additive to mix with poly (acrylonitrile-co-methyl acrylate) (P(AN-MA)) copolymer. P(AN-MA)/MCC-C16 composite membranes were formed via non-solvent induced phase separation, which exhibited excellent antifouling ability, hydrophilicity, and permeability compared with the control sample P(AN-MA) membrane. The P(AN-MA)/MCC-C16 composite membranes exhibited higher pure water flux, bovine serum albumin (BSA) flux, and flux recovery rate (FRR) than those of the pristine membrane when 5 wt% MCC-C16 was added. The pure water flux increased from 284 to 459 L/m2 h, BSA rejection was up to 95.2%, and the highest flux recovery ratio was up to 86.7%. The lowest irreversible fouling was depressed to 13.5% after three cycles of permeation. MCC-C16 is valuable in fabricating PAN-based ultrafiltration membranes for water treatment and is low cost, and environmentally friendly with excellent antifouling performance.}, journal={JOURNAL OF MEMBRANE SCIENCE}, author={Han, Na and Zhang, Wenxin and Wang, Weijing and Yang, Chao and Tan, Linli and Cui, Zhenyu and Li, Wei and Zhang, Xingxiang}, year={2019}, month={Dec} }
 @article{zhang_han_tan_qian_zhang_wang_li_cui_zhang_2019, title={Bioinspired Superwettable Covalent Organic Framework Nanofibrous Composite Membrane with a Spindle-Knotted Structure for Highly Efficient Oil/Water Emulsion Separation}, volume={35}, ISSN={["0743-7463"]}, DOI={10.1021/acs.langmuir.9b02661}, abstractNote={Covalent organic frameworks (COFs) have attracted broad interest in a number of fields including gas access, catalysis and ionic adsorption. However, owing to the low stability in water, the application of COFs in the field of oil/water separation are extensively impeded. In this paper, we synthesized COF-DhaTab/polyacrylonitrile (PAN) nanofibrous composite membranes with bio-inspired spindle-knotted structure via a facile blending electrospinning method. The COF-DhaTab/PAN composite membrane shows prewetting-induced superoleophobicity under water and superhydrophobicity under oil. It possesses outstanding rejection ratio (> 99.9 %), excellent antifouling performance, ultra-high oil/water mixture flux up to 4229.29 L/m2h even though only driven by gravity. Specifically, the extraordinary oil contact angle under water (152.3°) and satisfied water contact angle under oil (153.7°) were offered by the composite membrane. These are mainly attributed to the spindle-knotted structures induced by COFs. To the best of our knowledge, PAN/COFs composite membrane applied in the field of oil/water separation has never been reported. It is an innovative approach for oily wastewater treatment and oil purification.}, number={50}, journal={LANGMUIR}, author={Zhang, Zongxuan and Han, Na and Tan, Linli and Qian, Yongqiang and Zhang, Haoran and Wang, Menglu and Li, Wei and Cui, Zhenyu and Zhang, Xingxiang}, year={2019}, month={Dec}, pages={16545–16554} }
 @article{han_yang_zhang_wang_zhang_han_cui_li_zhang_2019, title={Electrostatic Assembly of a Titanium Dioxide@Hydrophilic Poly(phenylene sulfide) Porous Membrane with Enhanced Wetting Selectivity for Separation of Strongly Corrosive Oil-Water Emulsions}, volume={11}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.9b12252}, abstractNote={The efficient treatment of oil-water emulsions in extreme environments, such as strongly acidic and alkaline media, remains a widespread concern. Poly(phenylene sulfide) (PPS)-based porous membranes with excellent resistance to chemicals and solvents are promising for settling this challenge. However, the limited hydrophilicity and the poor hydrated ability of the hydrophilic PPS (h-PPS) membranes reported in the literature prevents them from separating oil-water emulsions with high efficiency, large fluxes, and good antifouling performances. In this study, a firm rough TiO2 layer is constructed on a h-PPS membrane via electrostatic assembly to improve the surface hydrophilization. The introduction of the TiO2 layer increases the wetting selectivity and decreases the oil adhesion, which makes it capable to efficiently treat oil-in-water emulsions (efficiency > 98 %). Most importantly, the underwater critical oil intrusion pressure almost doubled after the incorporation of the TiO2 layer, which allows the membrane to withstand pressurized filtration, achieving a high flux of ~4000 L m-2 h-1. This is more than two orders of magnitude larger than the flux of the reported h-PPS. Furthermore, the TiO2@h-PPS membrane displays long-term stability in separating oil-water emulsions in strong acid and strong alkali, showing a promising prospect for the treatment of strongly corrosive emulsions.}, number={38}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Han, Na and Yang, Chao and Zhang, Zongxuan and Wang, Weijing and Zhang, Wenxin and Han, Changye and Cui, Zhenyu and Li, Wei and Zhang, Xingxiang}, year={2019}, month={Sep}, pages={35479–35487} }
 @article{qian_han_zhang_cao_tan_li_zhang_2019, title={Enhanced Thermal-to-Flexible Phase Change Materials Based on Cellulose/Modified Graphene Composites for Thermal Management of Solar Energy}, volume={11}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.9b18543}, abstractNote={The applications of phase change materials (PCMs) in some practical circumstances are currently limited due to the constant strong rigidity, poor thermal conductivity, and low photo-absorption properties. Therefore, the design of flexibility-enhanced, highly efficient PCMs is greatly desirable and challenging. In this work, novel PCM composites (CPmG-x) with stable forms and thermally induced flexibility were successfully prepared by grafting the comb-like poly(hexadecyl acrylate) polymer (PA16, phase change working substance) onto a cellulose support by atom transfer radical polymerization (ATRP). Modified graphene (GN16) was incorporated into the synthesized material in order to enhance its enthalpy, thermal conductivity, and physical strength. The prepared CPmG-x composites exhibit excellent softness and flexibility after phase transition of PA16. The addition of GN16 increases the thermal conductivity and enthalpy of CPmG-x materials to 1.32 W mK-1 (9 wt.% GN16) and 103 J g-1 (5 wt.% GN16), respectively. Assessments of the solar-to-thermal energy conversion and storage efficiencies indicate that CPmG-x composites possess great potential for use in thermal energy management applications and solar energy collection systems.}, number={49}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Qian, Yongqiang and Han, Na and Zhang, Zongxuan and Cao, Ruirui and Tan, Linli and Li, Wei and Zhang, Xingxiang}, year={2019}, month={Dec}, pages={45832–45843} }
 @article{han_wang_lv_zhang_yang_wang_kou_li_dai_zhang_2019, title={Highly Efficient Purification of Multicomponent Wastewater by Electrospinning Kidney-Bean-Skin-like Porous H-PPAN/rGO-g-PAO@Ag+/Ag Composite Nanofibrous Membranes}, volume={11}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.9b16889}, abstractNote={Due to the complexity of harmful wastewater components, environmental and multifunctional materials are required for sewage purification. In this paper, a novel kidney-bean-skin-like hydrophilic porous polyacrylonitrile/reduced graphene oxide-g-poly amidoxime loaded Ag+ (H-PPAN/rGO-g-PAO@Ag+/Ag) composite nanofibers membrane was fabricated by combining electrospinning and hydrolysis method. The spinning solution was pumped at a rate of 0.4 mL/h with the voltage set at a constant value of 23 kV. Then a part of -CN groups switched to hydrophilic -COOH groups via hydrolysis method, which acts as a linker of GO-g-PAN, Ag+ and PAN matrix. The further step of chelation and thermal treatment were used for generating Schottky junctions between rGO-g-PAO@Ag+ and Ag. After five cycles tests, it exhibited outstanding mechanical property ensuring the filtration and purification performance of H-PPAN/rGO-g-PAO@Ag+/Ag composite nanofiber membrane (i.e. the tensile strength was still 7.21 MPa and the elongation was 61.53%) for simulated wastewater. The methods of thermal treatment and high-pressure Hg lamp irradiation promoted the reducing reaction of GO to rGO and Ag+ to Ag particles, which endows the final product H-PPAN/rGO-g-PAO@Ag+/Ag excellent photocatalytic and bactericidal properties. Its catalytic efficiency for dyes Benzoic acid (BA), Rhodamine B (RhB), Methylene blue (MB), and Methyl orange (MO) was up to 99.8%, 98%, 95%, and 91%. The antibacterial rate was 100% against E. coli, and 99% against S. aureus. More importantly, the photocatalytic and antibacterial PAN based nanofiber membrane can be simply scaling up, which provides the membrane with great potential in highly efficient wastewater treatment and augmenting water supply.}, number={50}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Han, Na and Wang, Weijing and Lv, Xingshuai and Zhang, Wenxin and Yang, Chao and Wang, Menglu and Kou, Xiaohui and Li, Wei and Dai, Ying and Zhang, Xingxiang}, year={2019}, month={Dec}, pages={46920–46929} }