MATERIALS CHEMISTRY AND PHYSICS
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2021
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IF 4.094
Xiao Guo,Haibo Wang,Rui Tian,Haojiang Yin,Yunfeng Qiu,Feng Wang
Hydrophobic α-Al 2 O 3 ceramic membrane (HCM) offers excellent mechanical properties , corrosion resistance , and high-temperature resistance. Application of HCM in the membrane distillation (MD) process could expand the application scope of MD equipment and greatly lengthen the replacement cycle of the membrane. Here a prediction model of the contact angle of HCM was constructed by physical-chemical combined modification method, orthogonal method, and stepwise linear regression method to optimize the preparation process of HCM. The surface morphology , contact angle, and surface functional groups of HCM were characterized. In this work, we polished the surface of the α-Al 2 O 3 ceramic membrane with 400 mesh sandpaper to copy the optimal morphology and found that the effect of grafting time on the contact angle of HCM could be abandoned. The optimal levels of drying temperature, drying time, and grafting solution concentration were 250 °C, 65.5 min, and 0.019 mol/L, respectively. The contact angle of HCM was 145.3° corresponding to the optimal preparation process. The significance of the prediction model of the contact angle of HCM was better than 0.05, and all of the prediction errors were less than 5%. This work has an important guiding value for exploiting the optimum hydrophobic property of HCM.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2023
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IF 5.7
Hongming Fu,Kaili Xue,Jihao Yang,Zhaohao Li,Heng Zhang,Dan Gao,Haiping Chen
In this paper, Al 2 O 3 ceramic membrane is modified to hydrophobicity by grafting 1 H,1 H,2 H,2 H-perfluorodecyltriethoxysilane. And its properties are characterized in detail. CO 2 capture performance of ceramic membrane is investigated by experiments. Results show that wetting resistance after modification is significantly improved, and contact angle increases from the initial 49.8–130.9°. However, hydrophobic modification has no significant effect on the crystalline phase, surface morphology and pore size distribution of the ceramic membrane. With ethanolamine (MEA) as absorbent, CO 2 mass transfer rate and capture efficiency using modified hydrophobic ceramic membrane are 46.6 × 10 −3 mol/(m 2 ·s) and 98.0%, showing significantly increase compared to the original membrane. After 72 h immersion in MEA solution, quality of ceramic membrane does not change significantly. And there is almost no change in average pore size. We believe this study will provide a reference for the industrial application for CO 2 capture by gas-liquid membrane contactor with ceramic membrane.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Zhenkai Wang,Yifan Li,Yanfang Su,Sheng-Peng Sun,Xiaoning Wang,Zhangxiong Wu,Winston Duo Wu,Xiao Dong Chen
Catalytic membrane integrating membrane filtration and advanced oxidation in one single-step is promising in addressing emerging micropollutants issue in water, the challenges in catalytic activity and stability still limit their practical application. This study successfully anchored highly stable Fe–Mn bimetallic catalyst (FMBC) in Al 2 O 3 -based microfiltration and ultrafiltration ceramic membranes channel (named as FMBC@Al 2 O 3 -MF or UF) via a novel in situ fabrication strategy. Characterization results revealed that FMBC was anchored on the membrane channel wall of Al 2 O 3 -MF/UF, which enabled boosting Oxone activation to generate sulfate radical and hydroxyl radical at circumneutral pH (e.g., 7.0–9.0) and with great stability. Notably, FMBC@Al 2 O 3 -UF exhibited a remarkable activity and anti-interference capability in actual water matrices, which resulted in efficient degradation of emerging micropollutants such as carbamazepine, crotamiton, diethyltoluamide, gemfibrozil and ibuprofen in lake water and municipal wastewater treatment plant secondary effluent at environmentally relevant concentrations. Moreover, FMBC@Al 2 O 3 -MF/UF also displayed high cleaning efficiency toward natural organic matter (NOM) and effluent organic matter (EfOM) fouling via Oxone activation. Besides, the intermediates of carbamazepine degradation were identified, and most of them had decreased aquatic toxicity based on Ecological Structure Activity Relationship (ECOSAR) prediction. The high activity, stability and environmentally friendly property of the as-prepared FMBC@Al 2 O 3 -MF/UF make them promising application for advanced treatment of emerging micropollutants in water.
研究领域:
环境科学
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水处理技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Xinyang Zhang,Jiawei Liang,Zhaoxuan Fei,Yuzhou Zhao,Le Tong,Yonghui Han,Jinlong Wang,Daliang Xu,Han Zhang,Weijia Gong,Guibai Li,Jiaxuan Yang,Heng Liang
Membrane technology holds great potential for algae-laden water treatment, but membrane fouling and energy consumption hinder its scalability. Herein, we developed a hydrophilic ZrO 2 /Al 2 O 3 ceramic membrane and integrated it with hydrophobic microbubble enrichment, significantly improving filtration performance. Based on density functional theory, the adsorption energy of ZrO 2 /Al 2 O 3 ceramic membrane for water molecules was demonstrated to be −2.06 eV, and the membrane hydrophilicity was significantly enhanced. The experimental results revealed that the synergistic integration of hydrophobic microbubble enrichment and hydrophilic ceramic membrane filtration reduced the ceramic membrane's reversible and irreversible fouling resistance by 74.4 % and 76.0 %, respectively. In addition, the interactions between the altered algal flocs induced by hydrophobic microbubbles with both the membrane surface and the cake layer were weakened during the initial and later filtration phases. The free energy interaction between the algal flocs and the cake layer increased from −9.0 mJ/m 2 to 14.7 mJ/m 2 . The economic analysis further demonstrated that this synergistic approach not only enhanced biomass separation efficiency but also lowered operational costs, offering a scalable solution for sustainable biomass separation.
研究领域:
环境工程
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膜科学
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水处理技术
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材料科学
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可持续能源
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）