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您的检索式：作者名="CHENG Youyou"
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| 1 | Hierarchical metal-phenolic-polyplex assembly toward superwetting membrane for high-flux and antifouling oil-water separation显示文摘Superwetting membranes have emerged as promising materials for the efficient treatment of oily wastewater.Typically,superwetting membranes can be developed by ingeniously chemical modification and topographical structuration of microporous membranes.Herein,we report the hierarchical assembly of metal-phenolic-polyplex coating to manipulate membrane surface superwettability by integrating metal-phenolic(Fe^(Ⅲ)-tannic acid(TA))assembly with polyplex(tannic acid-polyethylenimine(PEI))assembly.The proposed Fe-TA-PEI coating can be deposited on microporous membrane via simply dipping into Fe^(Ⅲ)-TA-PEI co-assembly solution.Based on the catechol chemistry,the coordination complexation of Fe^(Ⅲ)and TA develops metal-phenolic networks to provide hydrophilic chemistries,and the electrostatic complexation of TA and PEI generates nanoconjugates to impart hierarchical architectures.Benefiting from the synergy of hydrophilic chemistries and hierarchical architectures,the resulting PVDF/Fe-TA-PEI membrane exhibits excellent superhydrophilicity(~0°)underwater superoleophobicity(~150°)and superior anti-oil-adhesion capability.The superhydrophilicity of PVDF/Fe-TA-PEI membrane greatly promotes membrane permeability,featuring water fluxes up to 5860 L m^(-2)h^(-1).The underwater superoleophobicity of PVDF/Fe-TA-PEI membrane promises potential flux(3393 L m^(-2)h^(-1)),high separation efficiency(99.3%)and desirable antifouling capability for oil-in-water emulsion separation.Thus,we highlight the reported hierarchical metal-phenolic-polyplex assembly as a straightforward and effective strategy that enables the synchronous modulation of surface chemistry and topography toward superwetting membranes for promising high-flux and antifouling oil-water separation. | Xueting Zhao Yuanyuan Jiang Lijuan Cheng Youyou Lan Tingyuan Wang Jiefeng Pan Lifen Liu | 2022 | Chinese Chemical Letters2022，33，8： | 0 |
| 2 | Stress sensitivity of carbonate gas reservoirs and its microscopic mechanism显示文摘In order to evaluate the stress sensitivity of carbonate reservoirs,a series of rock stress sensitivity tests were carried out under in-situ formation temperature and stress condition.Based on the calibration of capillary pressure curve,the variable fractal dimension was introduced to establish the conversion formula between relaxation time and pore size.By using the nuclear magnetic resonance(NMR)method,the pore volume loss caused by stress sensitivity within different scales of pore throat was quantitatively analyzed,and the microscopic mechanism of stress sensitivity of carbonate gas reservoirs was clarified.The results show that fractures can significantly affect the stress sensitivity of carbonate reservoirs.With the increase of initial permeability,the stress sensitivity coefficient decreases and then increases for porous reservoirs,but increases monotonously for fractured-porous reservoirs.The pore volume loss caused by stress sensitivity mainly occurs for mesopores(0.02–0.50μm),contributing more than 50%of the total volume loss.Single high-angle fracture contributes 9.6%of the stress sensitivity and 15.7%of the irreversible damage.The microscopic mechanism of the stress sensitivity of carbonate gas reservoirs can be concluded as fracture closure,elastic contraction of pores and plastic deformation of rock skeleton. | CHENG Youyou GUO Chunqiu CHEN Pengyu SHI Haidong TAN Chengqian CHENG Muwei XING Yuzhong LUO Xiang | 2023 | Petroleum Exploration and Development2023，50，1： | 0 |
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