SURFACE & COATINGS TECHNOLOGY
·
2020
·
IF 3.784
Yuxin Song,Jihui Lang,Jiale Guo,Qi Zhang,Qiang Han,Hougang Fan,Ming Gao,Maobin Wei,Jinghai Yang,Zifeng Sheng
A carbon cloth@TiO 2 @Ag (CC@TiO 2 @Ag) membrane has been prepared by two-step method, including the hydrothermal method to make TiO 2 grow on carbon cloth and the photodeposition method to synthesize Ag element on CC@TiO 2 for oil-water separation. The obtained CC@TiO 2 @Ag membrane shows the good superhydrophilicity and underwater superoleophobicity due to its hierarchical broccoli-like interface with the good surface roughness and the natural hydrophilicity of TiO 2 . Importantly, the resultant membrane exhibits a strong self-cleaning ability under visible light irradiation of CC@TiO 2 @Ag membrane with loading a certain amount of Ag, so that the separation efficiency remains above 99% even after 60 cycles for various oil-water mixtures. Moreover, the CC@TiO 2 @Ag membrane is flexible and durable. The high separation efficiency and excellent self-cleaning ability of the membrane may own the broad application prospects in the field of oil-water separation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 4
·624
·
IF 5.3
Nuo Chen,Kexin Sun,Huicong Liang,Bingyan Xu,Si Wu,Qi Zhang,Qiang Han,Jinghai Yang,Jihui Lang
A novel engineered carbon cloth (CC)-based self-cleaning membrane containing a Cu:TiO2and Ag coating has been created via hydrothermal and light deposition methods. The engineered membrane with chrysanthemum morphology has superhydrophilic and underwater superoleophilic performance. The cooperativity strategy of Cu doping and Ag coating to the TiO2is found to be critical for engineering the separation efficiency and self-cleaning skill of the CC-based membrane under visible light due to the modulated bandgap structure and surface plasmon resonance. The CC-based membrane has excellent oil–water separation performance when Cu is fixed at 2.5 wt% and the Ag coating reaches a certain amount of 0.003 mol/L AgNO3. The contact angle of underwater oil and the separation efficiency are 156° and 99.76%, respectively. Furthermore, the membrane has such an outstanding self-cleaning ability that the above performance can be nearly completely restored after 30 min of visible light irradiation, and the separation efficiency can still reach 99.65% after 100 cycles. Notably, the membrane with exceptional wear resistance and durability can work in various oil–water mixtures and harsh environments, indicating its potential as a new platform of the industrial-level available membrane in dealing with oily wastewater.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Qi Zhang,Yuxin Song,Jiale Guo,Si Wu,Nuo Chen,Hougang Fan,Ming Gao,Jinghai Yang,Zifeng Sheng,Jihui Lang
The CC@TiO 2 -Cu membranes with various Cu doping contents have been synthesized via a simple one-step hydrothermal method for oil-water separation application. It is found that a certain amount of Cu doping is beneficial for achieving visible light response and enhance the superhydrophilicity/underwater superoleophobic performance of CC@TiO 2 -Cu membranes. Importantly, the CC@TiO 2 -Cu2.5 membrane with cauliflower-like morphology shows excellent self-cleaning and antifouling performance under visible light driven. And its separation efficiency can still maintain up to 99.6% under gravity even after 80 cycles of oil-water separation experiments. The mechanisms of both oil-water separation and photocatalytic self-cleaning for the CC@TiO 2 -Cu membrane are discussed in detail. The study provides a new concept for designing self-cleaning membrane to apply in oil-water separation.
研究领域:
材料科学
·
环境工程
·
光催化技术
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
·
IF 7.635
Zhen Lei,Zhenyu Li,Meiling Guo,Pei Li,Teng Da,Sicai Wang,Yuanpeng Wu,Yi He,Jingyu Chen
Filtration membranes (FMs), with robust anti-fouling performance, are highly desirable for practical oily wastewater purification but still a challenge to be realized without water pre-wetting procedure. Herein, we demonstrate a novel and effective route to address this challenge by decorating MnO 2-x nanowires on carbon cloth membrane (MCM) via simple hydrothermal method , in which the existence of oxygen vacancies on the outer surface of MnO 2-x nanowires can greatly enhance the H 2 O adsorption capacity even under oil, thus the oil-fouling problem can be solved by simply immersing the oil-polluted membrane into water and shaking. Besides the superamphiphilic performance in air and underwater superoleophobic (underwater oil contact angle > 155° against diverse oils), our MCM also exhibits unexpected under-oil superhydrophilic properties, Moreover, high separation efficiency for diverse oil/water mixtures (>99.8%) and oil-in-water emulsions (>98.3%) have been also achieved based on our product. These outstanding properties make our sample hold a great potential in practical oily/water purification.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Yan Yan,Jiale Guo,Nuo Chen,Yuxin Song,Si Wu,Qi Zhang,Qiang Han,Ming Gao,Jinghai Yang,Jihui Lang
Mn-TiO 2 /carbon cloth (CC) membranes with various Mn doping concentrations have been synthesized by hydrothermal process for efficient oil-water separation. The prepared membranes with superhydrophilic in air and underwater superoleophobic have the excellent self-cleaning performance under visible light driven, and these performances are strongly influenced by Mn doping concentration. The separation efficiency of the membranes is above 98% even after 56 oil-water separation cycles for various oil-water mixtures due to the d-states hybridization of Mn ions. Importantly, the membranes also have the good mechanical performance, reusability, chemical durability, and even work in acid, alkali and salt environment. The aforementioned properties and the easily scale-up production technique ensure that the Mn-TiO 2 /CC membrane has a potential application in practical treatment of oil spillage clean-up and oily wastewater.
研究领域:
材料科学
·
环境工程
✓ 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）