SURFACE ENGINEERING
·
2024
·
IF 2.4
Jiaojiao Bai,Chengxi Deng,Wenjuan Sun,Hua Dong
Scale deposition on the surface of pipelines is a common phenomenon in industrial production. It not only decreases the heat conduction efficiency of the pipeline and increases energy consumption, but also leads to corrosion of the pipeline. Although varieties methods are developed to prevent pipeline scale deposition, these methods could not meet the requirements of harsh production conditions. This study introduces a novel oil-infused surface on galvanized iron for efficient anti-scaling in industrial pipelines. The surface of galvanized iron is firstly oxidized and modified to be superhydrophobic/superoleophilic, followed by injection of oil to form oil-infused surface. This oil-infused superhydrophobic/superoleophilic surface demonstrates excellent water repellency and superior anti-scaling performance compared to untreated galvanized iron. It may provide a promising anti-scaling option for iron-based pipelines in industrial productions.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
·
2020
·Vol. 109
·期 6
·911-920
·
IF 2.831
Xin Yi,Chengyong Wang,Xiao Yu,Weiwei Su,Zhishan Yuan
Chronic wounds are greatly health threatening owing to the increasing morbidity, and bacterial biofilm is a major cause of chronic wounds. The critical for bacterial biofilm eradication is overcome the barrier of extracellular polymeric substances (EPS) produced by the bacteria, and promote the diffusion of drugs within the biofilm. In this article, composite microneedles (MNs) of chitosan and zinc nitrate (CS-Zn[II] MNs) were investigated to eradicate bacterial biofilm. The CS-Zn(II) MNs combined the structure characteristic of MNs with the antibacterial properties of CS and Zn 2+ . The MNs can pierce the EPS due to the needle-like structure, and can transport directly the CS and Zn 2+ into the bacterial biofilm. The needle-like structure of MNs also increased the contact area between drug carrier and bacterial biofilm nearly 14–23% comparing with membrane without needle-like structure, and facilitated the diffusion of drugs. What is more, the synergistic effect of CS and Zn 2+ make the CS-Zn(II) MNs obtain excellent antibiofilm properties. Counting the colony forming units and bacterial live/dead staining tests confirmed the fascinating antibacterial abilities (up to 100% inhibition) and biofilm eradication properties, respectively, of the CS-Zn(II) MNs. The inhibition zone test shown that the antibiofilm effect of MNs was superior to membrane and the antibiofilm effect of MNs was become increasingly obvious along with the increase of the treatment time. Besides, the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays proved that the CS-Zn(II) MNs possess brilliant cytocompatibility. These results indicate that the CS-Zn(II) MNs are promising method for bacterial biofilm eradication.
研究领域:
医学
·
材料科学
·
微生物学
✓ 已验证
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Nan Li,Shideng Yuan,Ruidian Su,Jiakun Wu,Na Shi,Lei Wang,Zhining Wang
Efficient utilization of uranium in seawater provides a viable and sustainable solution to supply the growing demand for nuclear energy. Adsorbents used for uranium extraction from seawater are usually disturbed by co-existing ions and contaminated by organisms. In this study, a zinc phosphonate framework system (ZMP 2 -6) with zoledronic acid as a ligand was fabricated via a facile one-step mixing method at room temperature, which possesses great adsorption performance, high selectivity and outstanding antibacterial ability. The high porosity and rich binding sites endowed ZMP 2 -6 with an extremely high adsorption capacity of 1695.5 mg/g at 25°C. Remarkably, ZMP 2 -6 selectively extracted 18.0 mg/g uranium from natural seawater in only 1 month with a higher distribution coefficient against other coexisting metal ions. In addition, ZMP 2 -6 exhibited excellent bacteriostatic ability against Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ), which was greatly desired in real uranium extraction from seawater. Noteworthily, ZMP 2 -6 can be easily assembled into adsorption modules and grow on different carriers, which significantly improves uranium separation efficiency and practical applicability. This work rationally engineered a zinc phosphonate framework system and provided a strategy for highly efficient uranium capture from the ocean.
研究领域:
材料科学
·
海洋科学
·
核能工程
✓ 已验证
DOI
高影响因子
Chemical Engineering and Processing-Process Intensification
·
2019
·
IF 3.031
Wenbin Xie,Libo Zhang,Jianyu Yang,Lihua Zhang,Shaohua Ju,Yaoyao Luo
Separation of Zn 2+ from sulphate solution containing Ni 2+ and Co 2+ using di-(2-ethylhexyl)phosphoric acid (D2EHPA) has been carried out in capillary microreactors. Well-defined slug flows are formed at total flow rates of 0.1–4 mL/min, and the slugs size and specific interfacial area are determined. The effects of saponification degree of D2EHPA, extractant concentration, and residence time on extraction and separation of these three metal ions are investigated. Meanwhile, conventional batch experiments at 94 s and equilibrium experiments at 8 h are also done in parallel at different extractant concentrations. Compared with conventional batch experiments, better extraction and separation performance, e.g. 2.7–38.9 times higher of β Zn/Ni and 3.9–34.9 times higher of β Zn/Co , is obtained in the slug flow microreactor. In addition, the overall volumetric mass transfer coefficient k L a and overall mass transfer coefficient k L are measured. Compared with other microreactors and the batch mixer-settler, the used slug flow microreactor shows higher k L a values of Zn.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 11
·110539
·
IF 4.386
Wen Xie,Wenxian Yang,Ping Xie,Wenjiang Xie
Polyaniline (PANI) has good electrical conductivity, diverse redox chemistry, and a unique doping/dedoping mechanism. Furthermore, the facile synthesis, controllable morphology, and the ability to grow in situ on substrates provide the impetus to obtain aqueous Zn-ion batteries (ZIBs) with PANI as a cathode. However, due to its poor redox reversibility in a near-neutral electrolyte environment, the resulting ZIBs have a rapid capacity drop, poor rate performance, and poor cycling stability. To improve the electrochemical performance of PANI cathodes in ZIBs, zinc ions are doped into PANI and incorporated with carbon nanotubes (CNTs) by one-step polymerization. The results show that the use of Zn-doped PANI and CNTs composites can enhance the conductivity and stability of PANI, and further improve the capacities, rate performances, and cycle life of the ZIBs. The battery assembled with an optimized PANI-based cathode exhibits a high specific discharge capacity of 156.7 mAh g−1 at 0.05 Ag−1, and excellent capacity retention of 95% after 800 charge/discharge cycles. Additionally, the Zn//PANI battery shows a promising energy density of 166.7 Wh kg−1, together with a power density of 111.2 W kg−1. Such Zn ion-doped PANI-CNTs cathode material may provide significant insight into future large-scale industrial production for Zn//PANI batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2020
·Vol. 7
·期 2
·026401
·
IF 1.929
Guoyong Liu,Yuan Yuan,Zhou Jiang,Jiang Youdong,Wang Liang
Superhydrophobic (SHP) surfaces had promising application in anti-icing field. In this work, ZnO SHP surfaces were prepared on aluminum alloy by radio frequency (RF) magnetron sputtering. The structure, chemical composition, morphology, wettability of the SHP surfaces were investigated by using corresponding methods. The anti-frosting/anti-icing performance of the ZnO SHP surfaces were investigated. Morphology of surfaces showed that sputtering time affected the surface morphology of the ZnO surfaces. When the sputtering time was 15 min, the rough structure exhibited excellent anti-frosting/anti-icing property due to the exceptional superhydrophobicity and self-transfer behavior at subzero temperature, which composed by densely gathered nanoclusters. The freezing of water droplets was delayed for about 2 h, and frosting was delayed for approximately 5 h at the temperature of −10 °C. The SHP surfaces could efficiently enhance the anti-icing property in glaze ice. Meanwhile, the as-prepared ZnO SHP surfaces displayed a low ice-adhesion strength of 12 ± 4.7 kPa. However, the structure with large undulation and pore space reduced the anti-frosting/anti-icing property of the SHP surface. This work provided a direction for the design and preparation of anti-icing surfaces for power transmission lines.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Wenyu Zhao,Qingquan Kong,Xiaoqiang Wu,Xuguang An,Jing Zhang,Xiaonan Liu,Weitang Yao
Aqueous zinc-ion batteries (ZIBs) are potential candidates for achieving considerable energy savings owing to their environmental benignity and low cost. At present, however, Mn 2+ dissolution causes structural failure in manganese-based cathodes. Therefore, addressing this issue is vital for improving their cycling stability and specific capacity. Herein, ε-MnO 2 was obtained by annealing MnCO 3 at 350 °C. Subsequently, ε-MnO 2 was coated with a carbon layer (carbonizing D-glucose) to obtain ε-MnO 2 @C, which effectively mitigated the Mn 2+ dissolution as well as the side reactions between the electrode and electrolyte. Electrochemical results revealed a significant improvement in the specific capacity (280 mAh g −1 at 0.2 A g −1 ) and capacity retention (∼91% over 1700 cycles at 1 A g −1 ) of the ε-MnO 2 @C cathode.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Polymer Chemistry
·
2014
·Vol. 5
·期 12
·3838-3846
·
IF 5.368
Yonghang Xu,Min Xiao,Shuanjin Wang,Mei Pan,Yuezhong Meng
A series of salicylaldiminato-zinc and -tri-zinc complexes containing various Schiff base ligands were prepared using quick methods and then well identified by full characterization. All zinc complexes were examined as catalysts for the copolymerization of CO2 and cyclohexene oxide. Many factors such as electron-donating or -withdrawing substituents on the benzene rings of the ligands, as well as chloride anions or acetate groups bound to the zinc centers, are found to greatly influence on the insertion of CO2 and ring-opening of epoxides. Tri-metallic complexes 2a and 2b exhibited excellent catalytic activities, and thus the copolymerization conditions such as temperature, pressure and reaction time were optimized. The molecular weights of the resulting copolymers determined by gel permeation chromatography display a bimodal distribution with relatively wide polydispersities. The results of the investigation indicate that the catalytic activities of zinc complexes are highly dependent on the electronic density and steric environment around the Zn metal centers.
研究领域:
化学
·
材料科学
·
催化反应
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Lianqing Yu,Wenjing Xie,Xiaomeng Ji,Yaping Zhang,Haifeng Zhu
The availability of low-cost precious metal-free photocatalysts is critical for sustainable and large-scale hydrogen production. Constructing heterojunctions is considered as an effective strategy to enhance the transfer/separation of photo-induced charges. Nanoflower structures of ZnCdS can significantly enhance light absorption and increase the specific surface area available for reactions involving photo-generated carriers. Herein, MoS 2 are attached to ZnCdS nanoflowers through electrostatic adsorption, forming a ZnCdS-MoS 2 composite photocatalyst for hydrogen evolution reaction (HER). Under visible light irradiation, the ZCS-MoS 2 -8 % photocatalyst demonstrates an impressive photocatalytic HER rate of 42.07 mmol·h −1 ·g −1 , which is 5.8 times higher than that of the pure ZnCdS photocatalyst (outperforming many reported results). The MoS 2 nanocrystals greatly benefit the transfer of photoinduced electrons to ZnCdS for proton reduction and facilitate the transfer of holes for water oxidation. The constructed ZnCdS-MoS 2 photocatalyst for hydrogen evolution shows promising chemical and economic value.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2013
·Vol. 69
·期 2
·370-377
·
IF 1.66
Xiang Di,Qu Fengyu,Chen Xiang,Yu Zhou,Cui Liru,Zhang Xu,Jiang Jingjie,Lin Huiming
Monodispersed porous ZnO nanospheres with diameters about 400–600 nm were successfully fabricated by a facile and effective cationic surfactant assisted selective etching strategy. The as-synthesized ZnO materials were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope and N 2 adsorption–desorption. These samples were used as the gas sensor, showing the high, stable and fast response to acetone, revealing the potential application as gas sensor to detect acetone. In addition, the photocatalytic degradation property of the porous ZnO nanospheres for methyl orange (MO) under UV irradiation was investigated. The degradation efficiency of MO reaches 96 % of the porous ZnO samples after 50 min of UV-light irradiation.
研究领域:
材料科学
·
纳米技术
·
分析化学
·
环境科学
·
传感器技术
✓ 已验证
DOI
高影响因子
Science Bulletin
·
2018
·
IF 4.136
Funian Mo,Hongfei Li,Zengxia Pei,Guojin Liang,Longtao Ma,Qi Yang,Donghong Wang,Yan Huang,Chunyi Zhi
Thermal runaway has been a long-standing safety issue impeding the development of high-energy-density batteries. Physical safety designs such as employing circuit-breakers and fuses to batteries are limited by small operating voltage windows and no resumption of original working condition when it is cooled down. Here we report a smart thermoresponsive polymer electrolyte that can be incorporated inside batteries to prevent thermal runaway via a fast and reversible sol-gel transition, and successfully combine this smart electrolyte with a rechargeable Zn/ α -MnO 2 battery system. At high temperature, battery operation is inhibited as a result of the increased internal resistance caused by the gelation of liquid electrolyte. After cooling down, the electrolyte is spontaneously reversed to sol state and the electrochemical performance of the battery is restored. More importantly, sol-gel transition enables the smart battery to experience different charge-discharge rates under various temperature levels, providing a smart and active strategy to achieve dynamic and reversible self-protection.
研究领域:
储能技术
·
材料科学
·
电化学
·
智能材料
·
电池安全
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Rizhao Ou,Zexin Zeng,Xutao Ning,Bin Zeng,Chaofu Wu
Sandwich-type hybrid consisting of N-doped ZnO/N-doped graphene/ N-doped ZnO (NZ/NG/NZ) is fabricated via solution reaction and subsequent carbonization using oligoaniline and graphene oxide (GO) as precursors mixed with zinc acetate solution. Oligoaniline serves as a spacer material by participating in the π-π interaction with GO nanosheets and prevents their restacking. The oligoaniline coordinates with Zn 2+ ions and along with carbonization, it results in a sandwich-type structure of N-doped ZnO/graphene/ZnO composite. The obtained N-doped ZnO/graphene/ZnO composite showed an excellent photocatalytic performance. Remarkably, the sandwich-type structure provides plenty of active sites in which N-doped ZnO has the narrowed bandgap with a visible light response and the N-doped carbon matrix facilitates effective photoinduced electron-hole separation. The strategy presented here offers an effective method to prepare such sandwich-structured N-doped metal oxide/graphene composites for photocatalysis or energy storage.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）