CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shuangchun Lu,Wenjuan Xue,Hao Wang,Qingling Liu,Rui Han,Donghai Mei
Capturing volatile organic compounds (VOCs) under humid conditions using zeolites suffers from the dramatically decreasing adsorption capability with relative humidity (RH) increase. Herein, a surface-induced polymer coating method is proposed to design hydrophobic zeolite. The as-synthesized novel hydrophobic Y zeolite@hypercrosslinked polymer composite (Y@P) is demonstrated with excellent adsorption capability for VOCs. In particular, the toluene adsorption capacity of Y@P-2-80 composite is two times higher than that of Y zeolite, and the Q wet /Q dry values are 97.2% at 90 %RH, indicating that the toluene adsorption capability of Y@P-2-80 is almost unaffected by vapor. The proposed surface-induced polymer coating method provides a promising and universal strategy for effective VOCs capture under wet conditions using zeolites with enhanced hydrophobicity.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2016
·
IF 5.886
Tengyan Xu,Chunhui Liang,Shenglu Ji,Dan Ding,Deling Kong,Ling Wang,Zhimou Yang
Fluorescence probes have been widely applied for the detection of important analytes with high sensitivity and specificity. However, they cannot be directly applied for the detection in samples with autofluorescence such as blood. Herein, we demonstrated a simple but effective method of surface-induced self-assembly/hydrogelation for fluorescence detection of an enzyme in biological fluids including blood and cell lysates. The method utilizes an attracting glass surface to induce self-assembly of an enzyme-generating fluorescent probe. After removing the upper solution, the fluorescence turn-on at the glass surface can therefore be used for the detection of enzyme activity. By judging the thickness and color depth of hydrogels at the surface of the glass plates, we could also estimate the enzyme activity by naked eyes. Our study not only expands the application of molecular self-assembly but also provides a useful method that can be applied for direct detection of enzyme activity in complex biological samples such as blood and cell lysates.
研究领域:
分析化学
·
生物化学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2018
·
IF 4.484
Jun Liu,Lu Chen,Hangsheng Yang,Ze Zhang,Yong Wang
Surface induced order–disorder phase transition has been widely studied on flat bulk surfaces, while such a transition is poorly understood on curved surfaces in nanoscale. Here, we report a direct observation of the dynamic behaviors of surface-initiated disordering in Ag2S nanoparticles using atomic resolution in situ transmission electron microscopy. It was found that the disordering behavior is different from the traditional model that the disordered layer follows a logarithmic thickness dependence with temperature. In particular, the disordering is largely enhanced at higher temperature when the radius of the residual order phase is getting smaller. Moreover, the correlation length of disordered phase was found to be several times larger than the typical value for bulk surfaces. This significantly enhanced disordering in nanoparticles could be attributed to the extra driving force provided by the decreasing of order–disorder interface area.
研究领域:
材料科学
·
纳米技术
·
物理学
✓ 已验证
DOI
高影响因子
Soft Matter
·
2022
·Vol. 18
·期 10
·2072-2081
·
IF 4.046
Feixue Gong,Na Du,Wanguo Hou
We recently found that rough glass surfaces (RGSs) can in situ mediate the micelle-to-vesicle transition in single-component solutions of simple single-tailed amphiphiles (STAs), but only result in a relatively small number of vesicles coexisting with a large number of micelles. In the current work, a dehydration–rehydration (DHRH) method was used to induce the formation of vesicles in the single-component aqueous solutions of alkyltrimethylammonium bromides (CnTABs, n = 12, 14, and 16), a kind of typical cationic STAs. That is, a CnTAB micelle solution dropped on smooth glass surfaces (SGSs) was first dried, and the dried CnTAB aggregates were then rehydrated in a monomer solution of CnTAB. A large population of vesicles and even pure vesicle (or vesicle-dominated) systems were obtained, indicating that the DHRH process could more effectively induce the formation of STA vesicles than RGS in situ mediation. The so-obtained vesicles were characterized using DLS, FF-/cryo-TEM, AFM, SAXS, and fluorescence techniques, and their stability was determined. In addition, the effects of the conditions of DHRH and the chain length of CnTABs on the vesicle formation were examined. It was demonstrated that the vesicles can be formed as long as the concentrations of CnTABs in the rehydrated systems are higher than their critical micelle concentrations. The size and wall thickness of vesicles increase with an increase in chain length. A possible mechanism for the DHRH-induced vesicle formation is proposed: bilayer sheets are formed on SGSs during dehydration, and then detached from the SGSs to form vesicles during rehydration. A highly interdigitated structure of alkyl chains between two leaflets was identified in the bilayers, which probably is the origin of the formation and stability of STA vesicles.
研究领域:
生物物理学
·
胶体与界面化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTAL GROWTH & DESIGN
·
2025
·
IF 3.4
Ying yang,Yiming Ma,Guobin Ren,Ming-Hui Qi,Zhong Li,Xiaoyong Xu
Surface-induced nucleation has received much attention in the discovery of new drug polymorphs and the modulation of metastable polymorphs. It has emerged as an increasingly important strategy for crystal structure control. In this study, we employed a heterogeneous surface design strategy based on molecular functionality to screen additives and induce the growth of new polymorphs of Fluxapyroxad (FLU), a potent succinate dehydrogenase inhibitor. Three new polymorphs were successfully obtained, named as F3, F4, and F5. These polymorphs were characterized through single-crystal X-ray diffraction and thermal analysis. Their intermolecular interactions and stacking patterns were more accurately elucidated by single-crystal structure analysis. Additionally, Hirshfeld surface analysis and the BFDH model morphological prediction were performed. Theoretical calculations further clarified the formation mechanism of the new polymorphs. In summary, the additives demonstrated the effectiveness of inducing novel FLU polymorphs, confirming the potential of a surface-induced nucleation strategy for polymorphs discovery.
研究领域:
药物化学
·
晶体学
·
材料科学
·
物理化学
·
药物发现
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENT INTERNATIONAL
·
2019
·
IF 7.943
Qian Sun,Cun Liu,Peixin Cui,Tingting Fan,Mengqiang Zhu,Marcelo Eduardo Alves,Matthew G. Siebecker,Donald L. Sparks,Tongliang Wu,Wei Li,Dongmei Zhou,Yujun Wang
Apart from surface complexation, precipitation of minerals also plays an important role in reducing the mobility and transport of heavy metals in the environment. In this study, Cd(II) sorption species on surfaces of γ-Al 2 O 3 at pH 7.5 were characterized using multiple techniques. Results show that in addition to adsorption complexes, Cd hydroxide phases (Cd(OH) 2 precipitates and Cd x (OH) y polynuclear complexes) were formed at the initial stages of Cd(II) sorption and gradually transformed to CdCO 3 with time. In addition, Cd(II) formed Cd Al layered double hydroxide (LDH) on γ-Al 2 O 3 under various conditions, independent of temperature and Cd loadings. The formation of Cd hydroxide phases and Cd Al LDH could be ascribed to surface-induced precipitation because the bulk solution was undersaturated with respect to hydroxides. Cd Al LDH formation on the Al-bearing mineral here is rather surprising because typically this occurs with elements of ionic radii similar to that of Al 3+ ; this formation is unknown for metals such as Cd(II) with a much larger ionic radius. The thermodynamic feasibility of Cd Al LDH formation was further confirmed by laboratory synthesis of Cd Al LDH and density function theory (DFT) calculations. These results suggest that Cd precipitation on Al-bearing minerals can be an important mechanism for Cd immobilization in the natural environment. Additionally, the finding of Cd Al LDH formation on Al-bearing minerals and the thermodynamic stability of Cd Al LDH provides new insights into the remediation of Cd-polluted soils and aquatic systems.
研究领域:
环境科学
·
地球化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 37
·21378-21385
·
IF 10.733
Wei Wen,Jincheng Yao,Hua Tan,Jin-Ming Wu
Electrode materials with hollow micro/nanostructures and high electrical conductivity are important for achieving high-power supercapacitors, especially those with super-fast charging/discharging. TiN, which can be easily obtained from TiO2, is regarded as a high-power supercapacitor material. Here, we report that a nanoscale Kirkendall effect is triggered by surface branches on TiO2 nanowires, which then transform into hollow TiN nanotrees during a thermal nitridation process. The surface branches play a key role in accelerating the initial reaction, which forms a uniform, continuous surface TiN layer and induces the Kirkendall effect via surface diffusion. The hollow TiN nanotrees have a high surface area, porous structure, and high electrical conductivity. The constructed symmetric supercapacitors exhibit high areal and volumetric energy density, super-fast charge/discharge ability, and good capacitance retention up to 350 000 cycles. This work provides a new method to synthesize hollow TiN nanostructures and demonstrates their advantages in achieving high-power energy storage devices.
研究领域:
材料科学
·
纳米科技
·
电化学
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
Journal of Environmental Sciences
·
2025
·
IF 6.3
Yamin Dong,Liyan Liao,Ping Liu,Yongxian Zhou,Jisai Chen,Wangwei Qiao,Xi Chen,Jinping Jia
The flow-through electrochemical reactor had attracted much attention in wastewater treatment because it can improve the mass transfer process of pollutants. However, its application was limited because the matched porous electrode was difficult to process, easy to be blocked and had insufficient treatment capacity. Therefore, a novel type of flow-through electrochemical reactor based on activated carbon particles was proposed in this study, which enhanced mass transfer and electrochemical process. The effects of process parameters such as voltage and particle dosage were also investigated. Compared with the traditional flow-through electrochemical reactor, the new electrochemical reactor with activated carbon particles layer improved the removal efficiency of RhB from 13.0% to 97.9% under the same operating conditions. A kinetic model based on the new reactor was established, which showed that the removal process of RhB conformed to the apparent first-order kinetic model. Meanwhile, the apparent first-order surface-induced adsorption reaction rate constant and electrochemical reaction rate constant were determined. In order to investigate the operation stability of the new reactor, six rounds of long-term experiments were carried out in this study. The results showed that the removal efficiency of RhB remained above 96.5% during each round of experiments without blockage occurring. In the treatment of actual printing and dyeing wastewater, the new reactor could achieve a COD removal rate of 78.6% after 8 reaction hours. Therefore, the flow-through electrochemical reactor combined with activated carbon particles layer had a good application prospect in the field of wastewater treatment.
研究领域:
环境工程
·
电化学
·
化学工程
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Photonics
·
2024
·
IF 32.3
Shan Xuchen,Ding Lei,Wang Dajing,Wen Shihui,Shi Jinlong,Chen Chaohao,Wang Yang,Zhu Hongyan,Huang Zhaocun,Wang Shen S. J.,Zhong Xiaolan,Liu Baolei,Reece Peter John,Ren Wei,Hao Weichang,Lu Xunyu,Lu Jie,Su Qian Peter,Chang Lingqian,Sun Lingdong,Jin Dayong,Jiang Lei,Wang Fan
Precise force measurement is critical to probe biological events and physics processes, spanning from molecular motor’s motion to the Casimir effect, as well as the detection of gravitational waves. Yet, despite extensive technological developments, the three-dimensional nanoscale measurement of weak forces in aqueous solutions still faces major challenges. Techniques that rely on optically trapped nanoprobes are of significant potential but are beset with limitations, including probe heating induced by high trapping power, undetectable scattering signals and localization errors. Here we report the measurement of the long-distance interaction force in aqueous solutions with a minimum detected force value of 108.2 ± 510.0 attonewton. To achieve this, we develop a super-resolved photonic force microscope based on optically trapped lanthanide-doped nanoparticles coupled with nanoscale three-dimensional tracking-based force sensing. The tracking method leverages neural-network-empowered super-resolution localization, where the position of the force probe is extracted from the optical-astigmatism-modified point spread function. We achieve a force sensitivity down to 1.8 fN Hz –1/2 , which approaches the nanoscale thermal limit. We experimentally measure electrophoresis forces acting on single nanoparticles as well as the surface-induced interaction force on a single nanoparticle. This work opens the avenue of nanoscale thermally limited force sensing and offers new opportunities for detecting sub-femtonewton forces over long distances and biomechanical forces at the single-molecule level.
研究领域:
生物物理学
·
纳米技术
·
光学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Healthcare Materials
·
2024
·
IF 10
Xiao Zhang,Penghui Liu,Ran Zhang,Wenhong Zheng,Di Qin,Yinghang Liu,Xin Wang,Tongyi Sun,Yuanyuan Gao,Li-Li Li
The incorporation of well-designed antibiotic nanocarriers, along with an antibiotic adjuvant effect, in combination with various antibiotics, offers us an opportunity to combat drug-resistant strains. However, precise control over morphology and encapsulated payload release can significantly impact their antibacterial efficacy and synergistic effects when used alongside antibiotics. Here, we focus on developing lipopeptide-based nano-antibiotics, which demonstrate an antibiotic adjuvant effect by inducing pH-induced collapse and negative-charged-surface-induced deformation. This enhances the disruption of the bacterial outer membrane and facilitates drug penetration, effectively boosting the antimicrobial activity against drug-resistant strains. The modulation regulations of the lipopeptide nanocarriers with modular design were governed by us. The nanoantibiotics, made from lipopeptide and ciprofloxacin (Cip), have a drug loading efficiency of over 80%. The combination with Cip resulted in a significantly low fractional inhibitory concentration index (FIC) of 0.375 and a remarkable reduction in the minimum inhibitory concentration (MIC) of Cip against MDR E. coli (clinical isolated strains) by up to 32-fold. The survival rate of MDR E. coli peritonitis treated with our nanoantibiotics was significantly higher, reaching over 87%, compared to only 25% for Cip and no survival for the control group. Meanwhile, the nanoantibiotic showed no obvious toxicity to major organs. This article is protected by copyright. All rights reserved
研究领域:
药学
·
纳米技术
·
微生物学
·
传染病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
·
2019
·Vol. 107
·期 6
·1264-1272
·
IF 3.221
Tao Huang,Jiangwei Xiao,Shuhao Wang,Zhaohong Liao,Tao Huang,Ruicai Gu,Junhua Li,Gang Wu,Hua Liao
Introducing or grafting molecules onto biomaterial surfaces to regulate muscle cell destination via biophysical cues is one of the important steps for biomaterial design in muscle tissue engineering. Therefore, it is important to understand the interaction between myoblasts and myofibers with substrates modified by biomimetic layer with different thicknesses. In this study, we used a surface-induced atom transfer radical polymerization method to synthetize and graft poly-phenoxyethyl methacrylate (PHEMA) brushes having different lengths on the glass substrates. C2C12 myoblasts were seeded on the PHEMA brushes and differentiated using horse serum, for analyzing the sensibility of muscle cells to feel environment changing, and further investigating whether the depths of grafting layer on the biomaterial surface are important factors in regulating muscle cell behaviors. Our results demonstrated that on the thicker PHEMA brushes surface (200 and 450 nm), C2C12 myoblasts showed a better survival and proliferation and were favorable for cell fusion and myotube formation. Furthermore, myofibers survived on the thicker brushes were more functional and upregulated cytoskeleton proteins (tubulin, vimentin, and vinculin) and FAK levels, and enhanced the expression levels for mechanical stress molecules (HGF, NOS-1, and c-Met). These results suggest that grafting thickness of PHEMA layer on the substrate led to the myoblasts/myofiber behavior change, which would be valuable for the design and preparation of the modified layer on muscle tissue engineering scaffolds. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 1264–1272, 2019.
研究领域:
生物材料
·
组织工程
·
细胞生物学
·
肌肉生理学
✓ 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）