CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yichen Zhang,Qingyi Xie,Jiansen Pan,Chunfeng Ma,Guangzhao Zhang
Zwitterionic hydrogel paints are promising and ecofriendly materials to prevent biofouling and oil contamination. However, the weak adhesion of hydrogel paints to substrates and tedious fabrication and coating processes limit their practical applications. Herein, a novel self-generating zwitterionic Janus hydrogel paint consisting of a polymer copolymerized by methyl methacrylate (MMA), tertiary carboxybetaine triisopropylsilyl ester ethyl acrylate (TCBSi), and 3-(methacryloxypropyl) trimethoxysilane (KH570) is reported. The polymer, when coated on a substrate, self-crosslinks into the polymer network and interlinks to the substrate during curing. This polymer decouples polymerization from the crosslinking and interlinking processes. When used underwater, the top layer of the coating rapidly hydrolyzes and self-generates a zwitterionic hydrogel layer, whereas the hydrophobic bottom layer remains unhydrolyzed. Adhesion tests show that this coating has considerably stronger adhesion strength than traditional zwitterionic hydrogel coatings due to the synergistic effect of hydrophobic interactions and interface bonding. Moreover, it has excellent resistance to protein, bacteria ( Escherichia coli , Staphylococcus aureus , and Pseudomonas sp.), and diatom ( Navicula incerta ). The self-generating zwitterionic Janus hydrogel coating can also prevent oil contamination. This study serves as a promising avenue for the design and fabrication as well as practical application of self-generating zwitterionic Janus hydrogel paint with strong substrate adhesion.
研究领域:
材料科学
·
生物学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2023
·Vol. 15
·期 1
·1-13
·
IF 26.6
Li Jiong,Duan Chenghao,Zhang Qianpeng,Chen Chang,Wen Qiaoyun,Qin Minchao,Chan Christopher C. S.,Zou Shibing,Wei Jianwu,Xiao Zuo,Zuo Chuantian,Lu Xinhui,Wong Kam Sing,Fan Zhiyong,Yan Keyou
Synergistic effect triggers the Ostwald ripening for the downward recrystallization of perovskite to form buried submicrocavities as light output coupler.
The simulation suggests the buried submicrocavities can improve the light out-coupling efficiency from 26.8% to 36.2% for near-infrared light.
Light-emitting diodes yields peak external quantum efficiency increasing from 17.3% at current density of 114 mA cm −2 to 25.5% at current density of 109 mA cm −2 and a radiance increasing from 109 to 487 W sr −1 m −2 with low rolling-off.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Min Xu,Jinrong Yin,Zhenyong Li,Yangqi Jiang,Opoku Bismark,Xiaoji Fu,Yu Song,Xianyan Ren,Yuwang Zhong
To solve the problem that the self-generated proppant in fractures grows slowly and cannot support the fractures in time, nano-graphite (NG) was introduced into a phase change liquid (PCL) composed of “styrene-divinylbenzene (SDB)” and the resulting self-generated proppants were constructed with a high growth speed. The NG/PCL started the phase transition from liquid to solid after 8 min at about 55°C in the wellbore section, and the phase transition was completed for only 2.5 min at a constant temperature of 65°C in fracture. Moreover, due to the high thermal conductivity and heterogeneous nucleation of the NG powder, the maximum strength of self-generated proppant in the NG-containing system can reach about 56.2 N during its growth process, which is 34.4% higher than that of pure SDB. The yield of the well-dispersed spherical self-generated proppants NG/SDB under the completely static condition can reach about 80%, of which the proppants with a particle size of 0.4 ~ 0.7 mm account for about 80%. NG/SDB exhibited an ultra-low apparent density of approximately 1.004 g/cm 3 , high compressive strength, and a crushing ratio of less than 1% at a closure pressure of 52 MPa, which is lower than that of commercial quartz sand and ceramsite proppants. Highlights Self-generated proppants with rapid growth were developed by the introduction of NG. Positive effects of NG in PCL system are obvious on phase transition and growth. NG/SDB is qualified in phase transition timing and compressive strength. The single-microsphere yield of NG/SDB is about 80%. The crushing ratio of NG/SDB as low as 3.92% at a closure pressure of 69 MPa.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Haofeng Xiao,Kai Zhang,Taijiang Gui,Shuxue Zhou
Antifouling coatings with biomimetic micro-nano structure have been widely explored for the replacement of traditional self-polishing coatings that relied on high content of biocides. However, their application is limited by the complicated preparation process as well as the lack of antibacterial effect and durability of micro-nano structure. Herein, a bactericide-free antifouling coating with capability to self-generate biomimetic surface was prepared using trimethoxysilyl/triisopropylsilyl ester-bearing polyacrylate and amino-silane coupling agent. Owing to the spontaneous phase separation of amino-silane, a micro-nano textured surface with both underwater superoleophobicity and alkaline hydration layer was generated under seawater immersion, mimicking the anti-adhering and bactericidal functions of the skins of pilot whales and dolphins. Interestingly, identical self-polishing rate and stable biomimetic surface were exhibited both in static and dynamic immersion tests, resulting from the combined action of the micro-nano structure and the alkaline hydration layer. Although no bactericide was contained, the coating based on [3-(2-aminoethyl)aminopropyl]trimethoxysilane possessed sterilization rate of 97.3 % ( E. coli ) and anti-algae rate of 85.1 % ( Chlorella sp.), and could maintain its sterilization rate at 93.1 % and 94.2 % even after 15 days of static or dynamic immersion, respectively. Meanwhile, the coating possessed superior antifouling performance and durability over conventional biomimetic surfaces in the actual marine environment, which came from the combination of micro-nano structure with intrinsic alkalinity and self-regeneration ability. Overall, our work would provide a new and practical strategy for the development of biomimetic antifouling coatings.
研究领域:
材料科学
·
海洋生物学
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2024
·
IF 8.6
Yijun Chen,Meina Cheng,Hailiang Yang,Sanjian Ma,Long Jin,Zixia Lin,Xin Liu
The traditional Fenton process has two issues that hinder its further application and promotion. One is the generation of large amounts of iron sludge. The other is the safe storage and transport of explosive H 2 O 2 . The problems could be solved by accelerating to regenerate Fe(II) and realizing to self-generate H 2 O 2 . The key to the solution lies in the use of reducing active hydrogen [H] to supply electrons. The effect of different loading methods of Pd 0 nanoparticles (NPs), active centres for [H] generation, on the catalytic performance is unknown. Herein, the Pd/UiO-66(Zr) (Pd 0 NPs loaded on the surface of UiO-66(Zr)) and Pd@UiO-66(Zr) (Pd 0 NPs confined into the pores of UiO-66(Zr)) were synthesized. It confirmed that the [H] could be used to promote to regenerate Fe(II) and self-generate H 2 O 2 . Using only a trace amount of ferrous (25 μM) and without H 2 O 2 , the trimethoprim (20 mg·L −1 ) could be thoroughly removed within 90 min. Moreover, the stability of Pd@UiO-66(Zr) was slightly superior to that of Pd/UiO-66(Zr) because of the confinement effect of pore wall on Pd 0 NPs, as well as the interception effect on the intermediate products that can be complexed with Pd 0 NPs.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Zhenyong Li,Cheng Bian,Junjie Zhang,Xiaoji Fu,Min Xu,Jinrong Yin,Opoku Bismark,Yu Song,Xianyan Ren,Yuwang Zhong
The growth rate of self-generated proppants in fractures determines their timely compressive strength development for fracture propping. Considering the influence of filler physicochemical properties (size, density, specific surface area (SSA), thermal conductivity (TC), compatibility, etc.) on polymer microsphere strength growth, modified graphite (MG) nano-powder was designed and rapid-growth self-generated proppants were constructed. Using SPSS (ver. 22), eight inorganic fillers were analyzed. Results showed specific surface area had the greatest impact on strength growth, with influence coefficients of 0.69 for SSA, −0.54 for size, −0.39 for TC, 0.39 for compatibility, and 0.044 for density. Incorporating MG as the desired filler increased the strength growth rate of self-generated proppant microspheres by 70 % compared to pure microspheres. Consequently, using peak pressure as an indicator, the maximum peak pressure reached 52.4 N within 24 minutes at 80 °C.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
PETROLEUM SCIENCE AND TECHNOLOGY
·
2024
·
IF 1.3
Jinrong Yin,Yuwang Zhong,Fan Rong,Zhenyong Li,Wei Qin,Yang Zhou,Zhen Zeng,Min Xu,Xianyan Ren
The liquid-solid phase transition timing and strength growth speed are critical for self-generated proppants to perform well. However, there isn’t any convenient method to study the phase transition and following growth behavior of self-generated proppants in the laboratory. In this paper, self-generated proppants with tunable phase transition timing and high growth speed were proposed, which were then used as a research object to propose some study methods on the phase transition and following growth behavior of self-generated proppants. Meanwhile, two monitoring techniques have been suggested for the phase transition process of self-generated proppant, while five monitoring methods have been proposed for the growth process of the same, respectively. Including visual observation and monitoring time-dependent viscosity changes for former, and monitoring the change of microsphere size, compressive strength, production, glass transition temperature and monomer conversion as a function of time for latter. Deviation of growth rules of self-generated proppant over time revealed by the above methods are basically consistent (0–2 min). The proposed self-generated proppants show quickly grow speed, the final peak pressure of the self-generated proppants with a size range of 20–40 mesh is significantly higher than that of traditional proppants, being 1.8 to 3.6 times greater.
研究领域:
石油工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Yijun Chen,Meina Cheng,Yundong Wang,Long Jin,Juanhong Li,Hailiang Yang,Sanjian Ma,Guoliang Dai,Zixia Lin,Xin Liu
Both the iron sludge and usage of H 2 O 2 restrict the promotion of the Fenton reaction. Herein, we proposed a hydrogen-accelerated oxygen reduction Fenton reaction system named MHORF-UiO-66(Zr) to try to solve the two problems under normal temperature and pressure. The active hydrogen, which is derived from H 2 catalyzed by the composite of Pd/UiO-66(Zr), could accelerate the reduction of Fe(III) and promote the electron transfer of two-electron oxygen reduction reaction to realize the self-generation of H 2 O 2 . And 45.9 mM of H 2 O 2 could be detected. As expected, 91 % of trimethoprim (TMP) could be degraded within 30 min in this system in the condition of 25 μM Fe(II), H 2 30 mL·min −1 , and Pd/UiO-66(Zr) 2g·L −1 , which was 2.94 times that of the control Fenton system. Based on these results, the feasibility of fundamentally achieving zero emission of iron sludge was successfully verified. It was confirmed that both the hydroxyl radical and singlet oxygen played the dominant roles during the reaction process through the analysis of electron spin resonance spectroscopy. After six reaction cycles, the removal efficiency of TMP could be maintained at least 94 %. It found that both the properties and morphology of this composite could remain based on the systematic characterization.
研究领域:
环境科学
·
化学工程
·
催化材料
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2025
·
IF 9.2
Xue Bai,Yanzhi Sun,Jiahong Xie,Huayi Yin,Rui He,Zhenfa Liu,Xifei Li,Junqing Pan
The sluggish leaching kinetics and low separation efficiency of Li/Co/Ni ions with high chemical consumption greatly hindered the recovery efficiency and cost of spent Li-ion batteries. Herein, we propose a self-generated H2 drives gradient reduction of spent cathode via surface enrichment of Li+ from retired Li-ion batteries, achieving a facile, efficient extraction of Li (>99.3%) by water as a leaching agent without chemicals. Characterizations and calculations reveal the adsorption and electron transfer mechanism between H2 and LiCoO2, the new phase transition mechanism of the layered structure and the changes in the electronic bonding and coordination environment of elemental Co during H2 precise reduction. Economic and environmental analyses showed that this work exhibits 22.6% energy consumption with 0% CO2 emissions and chemical consumption than hydrometallurgy, respectively, fully demonstrated its green and energy saving prospects for recycling spent Li-ion batteries.
研究领域:
材料科学
·
环境科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Qian Wu,Li Yang,Hong Wang,Shihua Dong,Longquan Chen,Juntang Li,Jiaxi Cui
Droplet-embedded structures are useful in functionalizing polymer composites but difficult to prepare. Herein, we report a facile self-born method for creating droplets in supramolecular gels to mediate the material’s functions. This method is based on the amplification of the defects of polymer matrices generated in curing by swelling-driving reconfiguration of supramolecular polymer networks. The system of poly(urea-co-polydimethylsiloxane) that can cross-link via hydrogen-bond interaction is used to demonstrate our concept. The elastomer matrices are prepared via a casting method and exhibit a heterogeneous structure with both strong- and weak-cross-linking domains. When these materials are swelled in solvents, solvent molecules concentrate in the weak-cross-linking domains to nucleate. With the reconfiguration of the matrices, the nuclei grow into pure droplets, leading to the formation of droplet-embedded structures. This method is applicable to different material systems. We also show that obtained coatings with such droplet-embedded structures exhibit various interesting properties including self-replenishment of the surface liquid, mechanoresponsiveness, and self-healing ability. Moreover, after the droplets are consumed, this method can be used to regenerate the droplet-embedded structure for refunctionalizing the materials. Therefore, we envision its applications in preparation of many useful polymer composites.
研究领域:
材料科学
·
高分子化学
·
软物质物理
·
表面工程
·
自修复材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Lei Zhao,Zilong Zhang,Tianyuan Zhang,Xiang Wang,Huanjun Peng,Jingdong Peng
The Fenton reaction in advanced oxidation processes is an ideal pathway for the generation of highly reactive hydroxyl radicals (•OH). However, its application in organic wastewater treatment is limited due to the requirement for acidic pH conditions and the additional introduction of H2O2 and Fe2+. In this study, FeOOH–CN/Ni(OH)2 composites were constructed as photocatalysis-self-Fenton catalysts by the amorphous FeOOH, which was uniformly anchored onto the surface of pure g-C3N4 (carbon nitride (CN)), and Ni(OH)2 was assembled on top. In this process, FeOOH–CN/Ni(OH)2 achieved self-sufficiency in H2O2 production while enabling efficient degradation of tetracycline hydrochloride (TCH) over a wide pH range, with a degradation ratio of up to 98.82%, and a first-order reaction rate constant (k) was determined to be 0.04925 min–1, representing a 10.15 times enhancement compared to the pristine CN. A reasonable S-scheme heterojunction charge migration mechanism was demonstrated based on valence-band X-ray photoelectron spectroscopy (VB-XPS), atomic force microscopy (AFM) equipped with a Kelvin probe force microscope, and density functional theory (DFT) theoretical calculations. Furthermore, degradation experiments demonstrated that the catalyst possesses remarkable degradation efficiency for other contaminants as well. On one hand, this significant improvement can be attributed to the formation of an S-scheme heterojunction between Ni(OH)2 and CN, which not only increased the specific surface area of the composite but also remarkably enhanced the separation and transfer efficiency of photogenerated charges. On the other hand, the synergistic effect between Ni and Fe effectively facilitated the activation of H2O2 and promoted the cycling of Fe3+/Fe2+. This study provided an efficient visible-light-driven photocatalysis-self-Fenton system, offering novel perspectives for enhancing Fenton-based processes and advancing the application of Fenton reactions in the treatment of organic wastewater.
研究领域:
环境化学
·
材料科学
·
光催化
·
水处理技术
·
物理化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Xinli Wang,Hongyan Liu,Shaoqiang Zhang,Zhongcui Jing,Changkai Zhang,Songxia Yan,Hong Zhou,Haiyan Wang
Background Recently, various techniques have been developed to accurately and sensitively detect tumor biomarkers for the early diagnosis and effective therapy of cancer. The electrochemiluminescence (ECL) method holding outstanding features including high sensitivity, ease of operation, and spatiotemporal controllability exhibited great potential for DNA/RNA detection, immunoassay, cancer cell detection, and environmental analysis. However, a glaring problem of ECL approaches is that the layer-by-layer modification on the electrode leads to poor stability and sensitivity of the sensors. Therefore, new simple and efficient methods for electrode modification which can effectively improve the ECL signal have attracted more and more research interests. Results Based on the dual amplification strategy of target-induced CHA and nanocomposite probes leading to self-generated co-reactant (H 2 O 2 ), we proposed a highly sensitive miRNA-ECL detection system. The introduction of the target miRNA-21 triggers the CHA cycle amplification of DNA1 and biotin-modified DNA2, releasing the target miRNA-21 sequence for the target cycle reaction. After the reaction, the newly introduced DNA2 was combined with Au NPs modified with SA and Glucose oxidase (GOD). In the presence of oxygen, glucose was decomposed by GOD to produce H 2 O 2 , and then H 2 O 2 was immediately catalyzed by the Hemin/G-quadruplex at the double-stranded end of the CHA product to produce a large amount of O 2 −• . As a co-reactant of luminol, the ECL signal was significantly enhanced, thereby achieving highly sensitive detection of miRNA-21 content and obtaining a low detection limit of 0.65 fM. The high specificity of the ECL biosensor was also proved by base mismatch. Significance Compared with other current detection methods, this sensor can achieve quantitative analysis of other target analytes by flexibly changing the probe DNA sequence, and provide a new feasible solution for the detection of tumor-associated markers. Benefiting from the improved sensitivity and selectivity, the proposed biosensing platform is expected to provide a new strategy for biomarkers analysis and outstanding prospect for further clinical application.
研究领域:
生物医学工程
·
分析化学
·
分子生物学
·
癌症研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）