JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Rishun Li,Lizhi Zhao,Anfeng Yao,Zhixin Li,Fan Wu,Xiaoli Ding,Huiqin An,Hui Ye,Yuzhong Zhang,Hong Li
Membrane fouling is one of the major problems in microfiltration processes. Slippery liquid infused surface with outstanding antifouling property provides a new strategy to solve membrane fouling, however, the loss of the lubricant hinders its long-term application underwater. Here we demonstrate a thermo-responsive paraffin-wax-infused membrane, which accommodates both stability and slippery feature of lubricant by adjusting the temperature. The membrane is prepared by filling melted paraffin wax in the rough structures of the silica coatings on the polyethersulfone (PES) membrane surface through suction filtration. The paraffin layer can cover the whole membrane surface, including the micropore wall. The paraffin wax of solid phase leads to a hydrophobic surface, and shows highly stability on the membrane, which can withstand shear from spinning, flowing water or filtration. When paraffin wax turns to liquid phase at temperatures above its melting point, the membrane surface transforms to slippery state that can resist bovine serum albumin (BSA) and bacterial adhesion. In the cross-flow microfiltration, excellent fouling-release performance and durability are achieved by the temperature responsive switching between the hydrophobic and slippery state; after three cycles of fouling by BSA and cleaning with water of 60 °C, the membrane with optimum amount of paraffin wax shows much higher flux and flux recovery (>90%) compared to the control membrane without paraffin wax.
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高影响因子
Journal of Energy Storage
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2023
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IF 9.4
Liyu Zhang,Xuelai Zhang,Weisan Hua,Liqiang Gao,Wenhao Xie,Wenzhuang Zhang
As an important part of the heat dissipation system of electronic devices, thermal interface membranes (TIM) can largely eliminate the interface thermal resistance between electronic devices and heat sinks. However, the minimum thickness of TIM which is constrained by the maximum assembly pressure that the electronic chip can withstand and the marginal cost caused by the continuous improvement of thermal conductivity makes the development of conventional TIM bottlenecked. This paper proposes a novel laminar temperature control structure based on form-stable phase change material with thermal-induced flexibility (TF-FSPCM). When the TF-FSPCM is thin (<500 μm), the structure appears as a TIM. Different from conventional TIMs, the structure provides a unique lateral thermal conductivity channel to increase the maximum heat flux . And the TF-FSPCM simultaneously solves the problem of excessive assembly pressure and leakage of PCM. 6 wt% EG increases the thermal conductivity of PCM by 223 %. When the carbon fiber net (CFN) is functional layer material, the actual thermal resistance of CFN-TIM is not >0.79 cm 2 K/W and the minimum theoretical thermal resistance is <0.1 cm 2 K/W at the preparation pressure in 0.04 MPa. In particular, the assembly pressure on TF-FSPCM is reduced to a normal level due to its excellent self-repair. In addition, the membrane structure of CFN greatly improves the tensile strength and puncture resistance so that it has a broader application prospect. Finally, the actual temperature control experiments show that the equilibrium temperatures of CFN-TIM and CFN/CF-TIM are reduced by 12.8 °C and 15.6 °C, respectively. This indicates that the membrane structure has a small actual thermal resistance and a large elastic modulus . And it proves that the unique lateral conduction channel of the laminar composite structure has the actual heat dissipation ability.
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2023
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IF 6
Li Wang,Yi Zeng,Hongsheng Lu,Zhiyu Huang,Ya Liu
Organogelators and hydrogelators which belong to low-molecular-weight gelators (LMWGs) have attracted considerable attention due to various practical applications. Whether organogelators or hydrogelators, they can congeal single oil or water phase. However, gelators capable of gelation at oil/water interface have thus far remained unexplored. Herein, we report a class of surface-active ionic liquids (SAILs) based on dimethylcyclohexylamine and fatty acids. They can form high-strength gels at the oil/water interface instead of in single oil or water phase. These molecules spontaneously aggregate at oil/water interface, and then self-assemble into lamellar liquid crystalline structure, as evident from POM and SAXS analysis. Rheology analysis shows that these gels are of very high viscosity, strength and stability. These unique characters make these SAILs can effectively block the oil–water interface, which has potential application in oilfield development or oil leaks from underwater tubes.
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高影响因子
Advanced Healthcare Materials
·
2023
·Vol. 12
·期 15
·2203099
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IF 10
Yanan Zhao,Honglei Kang,Xiaopei Wu,Pengzhen Zhuang,Rong Tu,Takashi Goto,Feng Li,Honglian Dai
Osteoporosis is a degenerative bone disease resulting from bone homeostasis imbalance regulated by osteoblasts and osteoclasts. Treating osteoporotic bone defects tends to be more difficult due to suppressed osteogenic differentiation, hyperactive osteoclastogenesis, and impaired angiogenesis. Hence, a drug carrier system composed of gelatin-coated hollow mesoporous silica nanoparticles (HMSNs/GM) loaded with pro-osteogenic parathyroid (PTH) and anti-osteoclastogenic alendronate (ALN) is constructed and compounded into calcium magnesium phosphate cement (MCPC). The spatial-temporal release of ions and drugs, controllable degradation rate, and abundant pore structure of MCPC composites enhance osteoporotic bone regeneration in ovariectomized rats by accelerating vascularization, promoting osteogenic differentiation and mineralization, and inhibiting osteoclastogenesis and bone resorption. The MCPC/HMSNs@ALN-PTH/GM demonstrates a synergistic threefold effect on osteogenesis, osteoclastogenesis, and angiogenesis. It improves the osteoporotic pathophysiological microenvironment and promotes osteoporotic vascularized bone defect regeneration, holding huge potential for other functional biomaterials design and clinical management.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Runfei Xu,Haoyang Huang,Wenjing Wang,Lei Ding,Qiang Lin,Jinbing Li,Yu Zhang,Yongsheng Han,Jianguo Wang,Xiaohua Lu
We report an approach of direct production of H 2 O 2 from water by applying altering potential in the electrocatalysis. By switching potentials periodically between positive to negative, oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) occurs sequentially on a single electrode loaded catalysts, which leads to the reduction of the newly-formed OER active species, forming H 2 O 2 directly. The H 2 O 2 production is dependent on the time and potentials of OER and ORR, which is optimized in this study. Besides, a waiting time is set after each period to let H 2 O 2 diffusion from the catalyst surface. Different catalysts are employed to test the feasibility of this approach, including glassy carbon, graphene oxide, nickel particles, nickel foam, and palladium particles. All these catalysts result in the production of H 2 O 2 at various reaction rates. Ni offers the highest H 2 O 2 productivity. With the prolonging of the reaction time, the decomposition of H 2 O 2 occurs on the surface of Ni catalysts, which is inhibited by the addition of Zn into the catalysts. The in-situ generated H 2 O 2 is used for partial oxidation of propylene by passing propylene into the porous electrode during the reaction, which lead to the formation of dimethyl ether and adipic acid. This study shows a new route of the direct synthesis and utilization of H 2 O 2 for the generation of valuable chemicals.
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高影响因子
Journal of Water Process Engineering
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2023
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IF 7
Bing Wang,Yuzhu Zhang,Chunyang Gao,Xianyuan Du,Tongxu Qu
Organic-contaminated groundwater poses a growing threat to environmental sustainability and human health. As a passive plume control technology, permeable reactive barriers (PRBs)have become a popular method for groundwater pollutants degradation due to their cost-effective and sustainable merits. However, active materials adopted in conventional PRBs have the shortcomings of easy deactivation and speedy consumption. As an alternative, slow-release materials can be used as PRBs fillers to treat contaminated groundwater because of their long chemical release time. In this study, novel slow-release persulfate pellets were prepared and tested for their release capabilities and effectiveness in the remediation of groundwater organic pollution. Results show that each pellet's release efficiency and average release rate within 14 days were 87.36 % and 46.80 mg-persulfate/d, respectively, when the mass ratio of sodium persulfate to paraffin was 3/1. Dissolution and diffusion via pores are the main mechanisms of the persulfate delivery from slow-release pellets in water. Moreover, solution pH, ionic species and addition of quartz sand into release pellets play dissimilar effects on the release kinetics. Results from column experiments indicate that the pellets could expand the PS influence range in the barrier and continuously remediate BTEXs-contaminated groundwater (initial concentration of each compound = 50 mg/L) and reach 64.2–85.1 % removal efficiency. The results of electron spin resonance (ESR) spectroscopy show that both SO 4 − and OH contribute to the removal of BTEXs. This study demonstrates the potential feasibility of slow-release persulfate materials for groundwater pollution treatments by PRBs, which inspires for future field applications.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 15
·2210578
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IF 19
Guanghao Li,Suping Ma,Zhuo Li,Yawen Zhang,Yishu Cao,Yi Huang
Fe 3 GeTe 2 provides an ideal system for the study of itinerant ferromagnetism. However, the Curie temperature (Tc) below room temperature limits its further in-depth research and wide applications. Here, the Tc of 224 K for Fe 3 GeTe 2 is greatly increased to 496 K for Fe 3 GeTe 2 /FeTe 2 /Fe 3 Ge by temperature-induced self-decomposition doping, contributing to improve the electromagnetic response for enhancing the absorption strength and bandwidth and boosting application potentials at higher temperatures. Then, to achieve the multispectral compatible strong absorption, room temperature ferromagnetic dielectric graphene@Fe 3 GeTe 2 /FeTe 2 /Fe 3 Ge absorber with 3D porous network structure is prepared by synergistic self-assembly. It has high Tc of 443 K with strong electromagnetic synergistic loss, achieving reflection loss of −61 dB at 12.6 GHz. Moreover, its absorption loss in the terahertz band (0.1–1.6 THz) is 76 dB, and the average loss is greater than 50.4 dB. Furthermore, the absorber is very potential as stealth skin to efficiently reduce satellite RCS with a multi-angle and multi-band manner in the gigahertz and terahertz bands, thus achieving the purpose of stealth. Compared with the reported conventional absorbers, the absorber has a multispectral compatible strong absorption performance covering gigahertz and terahertz bands, thus very promising for electromagnetic protection of electromagnetic communication and space vehicles.
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高影响因子
JOURNAL OF LUMINESCENCE
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2023
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IF 3.6
Zhaofa Li,Quanxiu Zhou,Palanivel Sathishkumar,Liang Peng,Qunfang Wang,Feng Long Gu
The present work fabricated a novel dual-emission responsive ratiometric fluorescent hybrid nanoprobe using a mixture of blue fluorescence-emitting N-Doped Carbon Quantum Dots (N-CQDs) and red fluorescence-emitting l -cysteine-capped CdSe/ZnS Quantum Dots (Lcys-CdSe/ZnS QDs). The addition of Cu 2+ resulted in the strong and specific fluorescence quenching in Lcys-CdSe/ZnS QDs while N-CQDs retained their fluorescence intensity. Further exploration of the nanoprobe showed that the detection limit was 3.78 × 10 −9 M and the linear range was below 3.2 × 10 −6 M. The nanoprobe possessed excellent anti-interference in the Cu 2+ determination and its application was successful in natural water samples. Experimental results suggested that the superficial left cysteine (Lcys) combines with Cu 2+ causing static quenching. Results of density functional theory (DFT) computation explained that Cu 2+ has the greatest possibility to combine with surficial Lcys and furthermore illustrated the role of the combination in static quenching. The work showed one of origin of the selectivity of the nanoprobe and a potentially guidance to design high selective ratiometric fluorescent nanoprobes.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Junyu Lu,Haoruo Zhang,Mushan Yuan,Yunfei Gao,Mei Liang,Yang Chen,Huawei Zou
Without a reliable mechanical carrier, it is difficult to apply MA materials in realistic aerospace scenarios. Here, the broadband MA properties of RGO/melamine foam (RGO/MF) composites were prepared and optimized by hydrothermal chemical reduction method. The realization of broadband MA by RGO/MF is mainly achieved through the cooperative enhancement of RGO dispersion by the following two points: (1) three-dimensional (3D) meso -scale dispersion of RGO supplied by MF and (2) 3D microlayer separation of formed RGO provided by hydrothermal chemical reduction. For the first time, we successfully achieve complete filling of the RGO/MF into honeycomb. The RGO/MF honeycomb composites achieved almost 95.25 % EAB in the full frequency ranges from 2 to 18 GHz, where the MA performance of the composites originated from the electric-field loss of the RGO/MFs. Such RGO/MF honeycomb composites shows a promising application prospect and guidance in the field of aerospace stealth.
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高影响因子
BIOCHEMICAL PHARMACOLOGY
·
2022
·
IF 6.1
Yi Li,Wenyan She,Tangxi Guo,Tianhe Huang,Yixin liu,Pan Liu,Xiaoran Xu,Xinyu Wang,Miao Wang,Chaochao Yu,Yi Liu,Yongchang Wei
Developing novel drugs for gastric cancer (GC) is greatly needed, and a reactive oxygen species (ROS)-modulating strategy has been demonstrated to be useful for cancer treatment. However, no organic arsenical-derived ROS-modulating drug has been developed in GC. Here, we constructed ACZ2 and investigated its efficacy and potential mechanism for GC in vitro and in vivo. Our data showed that ACZ2 could inhibit GC proliferation and cause G2/M phase arrest. Moreover, ACZ2 induced ROS accumulation by depleting glutathione (GSH) and TrxR1, triggering a subsequent ER stress response by activating the PERK/EIF2/ATF4/CHOP signalling pathways, which is a crucial step for ACZ2-mediated apoptosis and autophagy. Vitally, ROS scavenger (NAC) and ER stress inhibitor (4PBA) reversed ACZ2/ROS/ER stress-mediated apoptosis and autophagy. Our in vivo results clearly demonstrated that ACZ2 suppressed tumour growth in a GC xenograft model. Collectively, our data indicated that ACZ2 is a potential agent against GC.
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PubMed
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 2
·1049-1058
·
IF 3.9
Adham Hussein Abdullah Farea Al-akhali,Zhengqiang Tang
Oil–water separation using porous superhydrophilic materials is a promising method to circumvent the issue of oil-polluted water by separating water from oil–water mixtures. However, fabricating metal-based porous superhydrophilic materials with stable superhydrophilicity that can recover their strong hydrophilicity and have acceptable oil–water separation efficiency without complex external stimuli is still a challenge. Inspired by the anti-wetting behavior of broccoli buds, this study successfully fabricated metal-based superhydrophilic and underwater superoleophobic porous materials by hydrothermal treatment of stainless steel meshes (SSMs) combined with magnetron sputtering of metallic Ti and W. The process was then followed with annealing at 300 °C for 4 hours. The effects of coating materials, annealing temperature, and surface structure on the wetting behavior of the prepared meshes were studied and analyzed. The modified meshes exhibited unique broccoli-like microstructures coated with thin TiO2−xNx/WO3 films and showed superhydrophilicity with a 0° water contact angle (WCA) and underwater superoleophobicity with underwater oil contact angles (UOCAs) higher than 155°. They also maintained strong hydrophilicity for more than three weeks with WCAs of less than 13°. Besides, they could recover their initial superhydrophilicity with a 0° WCA after post-annealing at 80 °C for 30 minutes. Notably, the broccoli-like structures and the strong hydrophilic coatings contributed to a significant water flow rate (Q) of 3650 L m−2 h−1 and satisfactory oil–water separation efficiency of 98% for more than 15 separation cycles toward various oil–water mixtures. We believe that the presented method and fabricated material are promising and can be applied to induce hydrophilicity of various metallic materials for practical applications of oil–water separation, anti-fouling, microfluidic transport, and water harvesting.
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PubMed
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Jie Lv,Jianjun Wang,Ting Zhang,Bochao Yang,Ziwei Zhen,Yi Zheng,Yi Wang
To develop phase change material suitable for multi-energy complementary applications, nanofibrous Kevlar aerogel containing paraffin and then deposited with polypyrrole (PPY-KNF/PF) were fabricated. The structure, morphology and photo/electro-thermal conversion ability of PPY-KNF/PF, especially the effect of confinement on the latent heat storage capacity of composites without PPY (KNF/PF) were investigated. The results showed that PF was induced to the interface of nanofibers, then intercalated into the nanosheets during self-assembly of KNF and formed three-dimensional porous structure . The maximum latent heat of KNF/PF with PF fraction of 78.7 % is 117.2 J·g −1 without leakage. Due to the confinement effect , the actual enthalpies of KNF/PF are all lower than the theoretical latent heats, and the difference between the actual and theoretical values enlarges with the increase of PF percentage. The deposition of PPY has no effect on the structure and morphology of KNF/PF and the PPY-KNF/PF80 displays good shape stability and high latent heat storage ability (101.9 J·g −1 ). Moreover, the composite was endowed with multi-properties of electrothermal and active photothermal conversion, which makes it more suitable for use in the case of insufficient solar energy. This work demonstrated an effective strategy to fabricate composite PCMs with electro/photo-thermal conversion devoting to energy conversion, storage and complementary utilization.
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