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| 1 | In situ reduction and functionalization of graphene oxide to improve the tribological behavior of a phenol formaldehyde composite coating显示文摘The development of a phenol formaldehyde/graphene(PF-graphene)composite coating with high performance is desirable but remains a challenge,because of the ultrahigh surface area and surface inertia of the graphene.Herein,we synthesized PF-graphene composites by the in situ polymerization of phenol and formaldehyde with the addition of graphene oxide,resulting in improved compatibility between the graphene and phenolic resin(PF)matrix and endowing the phenolic resin with good thermal stability and excellent tribological properties.Fourier-transform infrared(FTIR)spectra and X-ray diffraction(XRD)patterns demonstrated that the graphene oxide was reduced during the in-situ polymerization.The PF-graphene composites were sprayed onto steel blocks to form composite coatings.The effects of an applied load and of the sliding speed on the tribological properties of the PF-graphene composite coating were evaluated using a block-on-ring wear tester;in addition,the worn surface and the transfer film formed on the surface of the counterpart ring were studied by scanning electron microscopy(SEM).The results show that the PF-graphene composite coating exhibited enhanced tribological properties under all tested conditions. | Mingming YANG Zhaozhu ZHANG Xiaotao ZHU Xuehu MEN Guina REN | 2015 | Friction2015，3，1： | 6 |
| 2 | Preparation of superhydrophobic CdS cotton using visible light response and its application for the control of water pollution显示文摘Sewage discharge produced by homes and industries contains both oil and water-soluble components. In order to remove oil from water, materials with specific wettability can be used;however, these materials cannot remove dissolved contaminants from water. In this research, we prepared a superhydrophobic Cd S cotton for water purification. This material has the ability to adsorb different types of oil due to its non-wettability(WCA = 152°). Moreover, its response behavior towards visible light enables it to remove water-soluble pollutants as well. The highest oil absorption rate of superhydrophobic Cd S cotton is nearly 30 times, and it can absorb light below 564 nm and produce ·OH to degrade water soluble pollutants. Finally, based on Mott-Schottky curve,the position of Fermi energy level was determined(–0.55 e V). Also, the positions of valence and conduction bands were calculated based on the analysis of band gap which helps in proving photoelectric response characteristics. | GE Bo REN GuiNa ZHAO PengFei JIN ChuanYu LI WenZhi ZHANG ZhaoZhu | 2019 | Science China(Technological Sciences)2019，62，12： | 5 |
| 3 | Fabrication of BiOBr-silicone aerogel photocatalyst in an aqueous system with degradation performance by sol-gel method显示文摘It is a challenge to endow the material with the ability to pollutants degradation while maintaining the oil/water separation performance. Herein, the mixed dispersion of BiOBr photocatalyst and silicone sol was adsorbed in melamine foam. Superhydrophobic BiOBr-silicone aerogel(WCA=154°) was obtained through the transfer melamine foam to an autoclave and reaction at 80℃ for 20 h. The prepared superhydrophobic BiOBr-silicone aerogel can effectively remove the water soluble pollutants which remain within the water phase after oil/water separation. The band gap of the superhydrophobic BiOBr-silicone aerogel was calculated to be 2.71 eV, which shows sensitivity to visible light(458 nm). Through mechanism analysis, it is found that the VB position of BiOBr is at 1.07 eV and the position of CB is at-1.64 eV. Finally, we prepared a superhydrophobic BiOBr-silicone aerogel(5 cm×5 cm×3 cm) for the verification of the large scale preparation. | GE Bo REN GuiNa YANG Hang YANG JingJing PU XiPeng LI WenZhi JIN ChuanYu ZHANG ZhaoZhu | 2020 | Science China(Technological Sciences)2020，63，5： | 4 |
| 4 | Sliding wear behaviors of Nomex fabric/phenolic composite under dry and water-bathed sliding conditions显示文摘A Nomex fabric/phenolic composite was prepared,and its tribological properties were evaluated under dry and water‐bathed sliding conditions by a pin‐on‐disk tribometer.The resulting size of the friction coefficient for the Nomex fabric/phenolic composite in the study occurred in the following order:dry sliding condition>distilled water‐bathed sliding condition>sea water‐bathed sliding condition.The fabric composite’s wear rate from high to low was as follows:distilled water‐bathed sliding condition>sea water‐bathed sliding condition>dry sliding condition.Under water‐bathed sliding conditions,penetration of water into the cracks accelerated the composite’s invalidation process,resulting in a higher wear rate.We also found that the extent of corrosion and transfer film formed on the counterpart pin significantly influenced the wear rate of the Nomex fabric composite.Discussion of the Nomex fabric composite’s wear mechanisms under the sliding conditions investigated is provided on the basis of the characterization results. | Guina REN Zhaozhu ZHANG Xiaotao ZHU Xuehu MEN Wei JIANG Weimin LIU | 2014 | Friction2014，2，3： | 3 |
| 5 | A Novel Superhydrophobic Bulk Material 显示文摘 | Xiaotao Zhu Zhaozhu Zhang Guina Ren | 2012 | J Mater Chem2012，22，20： | 1 |
| 6 | High-temperature tribological performance of hybrid PTFE/Nomex fabric/phenolic composite显示文摘 | Ren Guina Zhang Zhaozhu Zhu Xiaotao | 2014 | Composites Science and Technology2014，104，： | 1 |
| 7 | An unusual superhydrophilic/superoleophobic sponge for oil-water separation显示文摘Development of porous materials with anti-fouling and remote controllability is highly desired for oil-water separation application yet still challenging. Herein, to address this challenge, a sponge with unusual superhydrophilicity/superoleophobicity and magnetic property was fabricated through a dip-coating process. To exploit its superhydrophilic/superoleophobic property, the obtained sponge was used as a reusable water sorbent scaffold to collect water from bulk oils without absorbing any oil. Owing to its magnetic property, the sponge was manipulated remotely by a magnet without touching it directly during the whole water collection process, which could potentially lower the cost of the water collection process. Apart from acting as a water-absorbing material, the sponge can also be used as affiliation material to separate water from oil-water mixture and oil in water emulsion selectively, when fixed into a cone funnel. This research provides a key addition to the field of oil-water separation materials. | Jingwei Lu Xiaotao Zhu Xiao Miao Bo Wang Yuanming Song Guina Ren Xiangming Li | 2020 | Frontiers of Materials Science2020，14，3： | 1 |
| 8 | Construction of superhydrophobic directly Z-scheme bismuth oxybromide/silver phosphate fabric surface with UV shielding and enhanced visible light absorption activity显示文摘Various forms of pollutants discharged from industrial and life;how to treat the opposite water-soluble pollutants at the same time is a challenge.Here,a superhydrophobic BiOBr/Ag3PO4 fabric(SH fabric)bulk material was prepared aiming at the diversity of pollutants.Water(WCA=160°)and oil contaminants(spread)have different wetting behavior on fabric surfaces.The high recovery efficiency for oil pollutants was achieved by using the selective oil removal property of the SH fabric.Meanwhile,the pollutants in the aqueous phase were removed by photocatalyst after oil/water separation.Mechanism analysis demonstrated that the direct Z-type heterojunction formed between BiOBr(EVB=1.66 eV;ECB=-1.08 eV)and Ag3PO4(EVB=3.03 eV;ECB=0.6 eV).It is worth noting that the SH fabric exhibited good mechanical stability and UV shielding performance,which have potential application in environmental control. | GE Bo ZHANG YuLing ZHANG TingXiao REN GuiNa LI WenZhi ZHAO Hui | 2021 | Science China(Technological Sciences)2021，64，4： | 1 |
| 9 | A slippery hydrogel coating with durable oil-repellent property and self-regeneration capacity显示文摘Traditional lubricant impregnated surfaces usually required fluorinated lubricants to achieve slippery oil repellency, but the lubricants infused were expensive and toxic and also suffered from limited stability because of their migrating, evaporating, and leaking during use. Herein, to address this issue, we fabricated a durably fluorine-free slippery oil-repellent hydrogel coating using water as the lubricant. Due to its enhanced water-binding affinity, water could wet the hydrogel completely and form a hydrated-water layer on the surface. The hydrated water layer could act as a lubricant to repel foreign oils, which allowed the hydrogel to display slippery oil-repellency in air, exhibit superoleophobicity underwater, and resist oil fouling upon oil immersion.The hydrogel kept its oil-repellent properties after mechanical tests as well as thermal and freezing treatments,demonstrating its durability. Thanks to its moisture absorption, the water lubricant layer could self-regenerate upon the lubricated water layer depletion through exposure to a humid environment. Exploiting it is water-attracting and oil repellency, the hydrogel coating was demonstrated as a versatile platform for oil/water separation, polymer/water separation, drag-reduction, and antifogging. | XU Ting GAO ZhongShuai LI FangChao MIAO Gan JIA YuYu MIAO Xiao ZHU XiaoTao LU JingWei WANG Bo SONG YuanMing REN GuiNa LI XiangMing | 2022 | Science China(Technological Sciences)2022，65，8： | 0 |
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