Catalysts
·
2025
·Vol. 15
·期 3
·252
·
IF 4
Haitao Zhang,Jian Shi,Chaoya Han,Zhizhao Song,Yao Xiao,Xiazhang Li
With the increasing demand for air pollution control, the development of efficient and stable catalysts to degrade hazardous VOCs such as toluene has become particularly important. Herein, various copper-doped attapulgite-supported cobalt oxide spinel composites (CuxCo3−xO4/ATP) were synthesized using an ultrasonic-assisted precipitation method. The results showed that the abundant Si-OH groups on the surface of ATP played a crucial role in anchoring Co, and the instantaneous high-energy input of ultrasonication facilitated the formation of Si-O-Co bonds in Co3O4/ATP. The doping of Cu ions induced the expansion of the Co3O4lattice, resulting in a significant number of oxygen vacancies. The ultrasound-induced synthesized Cu0.1Co2.9O4/ATP catalyst exhibited the best catalytic oxidation performance, achieving a 99% toluene degradation rate at 300 °C under a weight hourly space velocity (WHSV) of 10,000 mL·g−1h−1and initial toluene concentration of 1000 ppm, along with high stability during 12 h of continuous running. This work presents a new strategy for the cost-effective catalytic elimination of VOCs.
研究领域:
环境科学
·
催化材料
·
空气污染控制
✓ 已验证
产品关联
DOI
高影响因子
Research
·
2023
·
IF 11
Zhuhao Wu,Lingyu Sun,Hanxu Chen,Yuanjin Zhao
The controllable manipulation and transfer of droplets are fundamental in a wide range of chemical reactions and even life processes. Herein, we present a novel, universal, and straightforward acoustic approach to fabricating biomimetic surfaces for on-demand droplet manipulations like many natural creatures. Based on the capillary waves induced by surface acoustic waves, various polymer films could be deformed into pre-designed structures, such as parallel grooves and grid-like patterns. These structured and functionalized surfaces exhibit impressive ability in droplet transportation and water collection, respectively. Besides these static surfaces, the tunability of acoustics could also endow polymer surfaces with dynamic controllability for droplet manipulations, including programming wettability, mitigating droplet evaporation, and accelerating chemical reactions. Our approach is capable of achieving universal surface manufacturing and droplet manipulation simultaneously, which simplifies the fabrication process and eliminates the need for additional chemical modifications. Thus, we believe that our acoustic-derived surfaces and technologies could provide a unique perspective for various applications, including microreactor integration, biochemical reaction control, tissue engineering, and so on.
研究领域:
材料科学
·
生物工程
·
化学工程
✓ 已验证
DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 2
·157
·
IF 4
Shun Li,Xinbo Liu,Xinyue Zhang,Yong Liu
Piezocatalysis is a promising technology for converting mechanical energy to chemical energy. Two-dimensional (2D) piezoelectric materials, with their large surface area, high charge mobility, and good flexibility, are among the most promising candidates in piezocatalysis. In this work, for the first time, we report Bi2O2Se nanosheets (NSs) with an average thickness of ~8 nm and a lateral size of ~160 nm for efficient piezocatalytic H2O2production from water and oxygen under mechanical force induced by ultrasonication. The Bi2O2Se NSs achieved a high H2O2production rate of 1033.8 μmol/g/h using ethanol as the sacrificial agent, significantly surpassing that of its bulk-sheet counterpart. Our results provide a novel potential 2D piezocatalytic material and offer valuable guidance for the design and development of high-efficiency H2O2production driven by mechanical energy from water.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Zhang Junle,Shuo Xu,Wenjie Zhang,Ge Shi,Yanjie He,Xiaoguang Qiao,Xinchang Pang
With ZnO/BaTiO 3 piezoelectric heterostructures as the catalyst, highly efficient ultrasonication-induced atom transfer radical polymerization (ATRP) in aqueous media was developed. Under ultrasonic action, the ZnO/BaTiO 3 heterostructure undergoes polarization and generates hole-electron pairs. The transfer of electrons to copper ions promotes the ATRP, while the strong oxidizing effect of the holes decomposes water molecules to generate hydroxyl radicals which lead to the loss of control of polymerization. By using ethanol as the co-solvent (V/V = 1/1) to capture the hydroxyl radicals and NaBr (0.66 mg/mL) to restrict the dissociation of bromide anions from the deactivator, the conversion of the monomer hydroxyethyl acrylate (HEA) reached 59.1 % within 12 min and 89.3 % within 30 min, in the presence of 600 ppm CuBr 2 /tris(2-pyrodylmethyl) (TPMA) and 3 mg/mL ZnO/BaTiO 3 heterostructure, with low molecular weight distribution ( M w / M n < 1.25). The polymerization can be temporally controlled by switching the ultrasound on and off, and it has also been demonstrated that the polymerization exhibits high chain-end fidelity. In addition, research was also conducted on the recycling of ZnO/BaTiO3, and the results indicated that the polymerization catalytic system possesses characteristics of sustainable development.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2014
·
IF 2.354
Feng Ye,Si Chen,GuoDong Tang,Xu Wang
A two-component gelator (B1⋯C12⋯B1) based on interaction between dendritic branch (Branch1 (COOH)) and diaminododecane is designed and synthesized, and its self-assembly behavior in methyl methacrylate (MMA) is firstly investigated. It is interesting to find that the gel formation depends on the concentration and sonication during cooling of the B1⋯C12⋯B1/MMA solution. Sonication plays as a switch simulator for exchanging morphology between a 3D gel network and globular structure in a certain concentration range. Thermal stability, rheological properties, morphology and self-assembly mechanism of the gels were investigated with tube inversion methodology, Dynamic oscillatory measurement, SEM and FTIR, respectively. The results indicated that Sonication-induced-gel (S-gel) exhibits much higher gel–sol temperature, storage modulus and lower critical gelator concentration compared with Temperature-induced-gel (T-gel), while sonication could partially destroy the hydrogen bond network and benefit the formation of the organogels.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
LAB ON A CHIP
·
2024
·Vol. 24
·期 14
·3556-3567
·
IF 6.1
Shi-Hao Yang,Wan-Lu Song,Lin-Ling Fan,Chuan-Fu Deng,Rui Xie,Wei Wang,Zhuang Liu,Da-Wei Pan,Xiao-Jie Ju,Liang-Yin Chu
A facile strategy for efficient and continuous fabrication of monodisperse gas-core microcapsules with controllable sizes and excellent ultrasound-induced burst performances is developed based on droplet microfluidics and interfacial polymerization. Monodisperse gas-in-oil-in-water (G/O/W) double emulsion droplets with a gas core and monomer-contained oil layer are fabricated in the upstream of a microfluidic device as templates, and then water-soluble monomers are added into the aqueous continuous phase in the downstream to initiate rapid interfacial polymerization at the O/W interfaces to prepare monodisperse gas-in-oil-in-solid (G/O/S) microcapsules with gas cores. The sizes of both microbubbles and G/O/W droplet templates can be precisely controlled by adjusting the gas supply pressure and the fluid flow rates. Due to the very thin shells of G/O/S microcapsules fabricated via interfacial polymerization, the sizes of the resultant G/O/S microcapsules are almost the same as those of the G/O/W droplet templates, and the microcapsules exhibit excellent deformable properties and ultrasound-induced burst performances. The proposed strategy provides a facile and efficient route for controllably and continuously fabricating monodisperse microcapsules with gas cores, which are highly desired for biomedical applications.
研究领域:
材料科学
·
生物医学工程
·
微流控技术
✓ 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）