ENGINEERING IN LIFE SCIENCES
·
2012
·Vol. 13
·期 2
·194-200
·
IF 1.925
Yuanyuan Yu,Jiugang Yuan,Qiang Wang,Xuerong Fan,Ping Wang,Xuejiao Sun
Cellulases can penetrate into the fiber, causing tensile strength loss of the cellulosic fibers or fabrics. To minimize the tensile strength loss, we have immobilized cellulases on Eudragit S-100. The characteristics of covalent Eudragit cellulase were evaluated using gel filtration analysis and UV spectra. Gel filtration analysis revealed that the cellulases were covalently bound to the polymer. Covalent Eudragit cellulase was loaded with the enzyme of about 40% and had a relative activity about 80% at a Eudragit S-100 concentration of 15 g/L. When cellulase is bound to the polymer, the solubility profile becomes similar to the one of Eudragit. In addition, the effects of the enzyme on the cotton yarns and fabric using cellulases have been investigated. Native and immobilized cellulases caused improvements in whiteness and wrinkle recovery angle of the fabric in comparison to the control samples. The bending stiffness results show that native and immobilized cellulase treated cotton fabric has an improved softness than the control samples. It was found that using the immobilized cellulase reduced the weight and tensile strength, because the hydrolytic attack is only limited to the surfaces of cotton fibers.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 52
·期 16
·9430-9440
·
IF 2.599
Duan Xiao,Wu Yalan,Ma Mengsi,Du Junjie,Zhang Shan,Chen Heng,Kong Jie
A new type of acid-sensitive 100% hyperbranched polyacetals (HBPA) was synthesized, which could be completely degraded into small molecules under acidic environment and avoid the accumulative toxicity in vivo. The AB 2 monomer was synthesized by 4-carboxybenzaldehyde and 2-bromoethanol. The bulk polycondensation was carried out in vacuum environment to remove water byproduct. The massive terminal aldehyde groups of HBPA were conjugated with mPEG-NH 2 and doxorubicins to form amphiphilic acid-sensitive polymer–drug conjugates (DOX-HBPA-PEG). The stability of the micelles of DOX-HBPA-PEG was evaluated by DLS at different pH value in phosphate buffer saline (PBS). The DOX release in vitro showed that the cumulative release rate was 14.51% in pH 7.4 PBS after 24 h and the cumulative release rate was 48.56% in pH 6.0 PBS after 24 h. The results of cell viability of DOX-HBPA-PEG and HBPA-PEG showed that the polymer–DOX conjugates were effective drug delivery systems. The uptake process of DOX-HBPA-PEG by A549 cells showed that the micelle was totally swallowed in 1 h later. The controllable drug release nature, stability, biocompatibility and completely degradable structures (acid-sensitive) make them to be promising drug delivery systems.
✓ 已验证
产品关联
DOI
高影响因子
COLLOID AND POLYMER SCIENCE
·
2015
·Vol. 293
·期 5
·1475-1481
·
IF 1.865
Dai Caili,Wang Shilu,Du Mingyong,Liu Yifei,Peng Dongxu,Yan Zhihu,Zhao Mingwei
A nonaqueous ionic liquid (IL) microemulsion containing ethylammonium nitrate (EAN), the surfactant TX-100, and cyclohexane was prepared at room temperature, and phase behavior of this ternary system was investigated at 25 ± 0.1 °C. Electric conductivity measurements were performed to identify the microregions of the nonaqueous IL microemulsion. Based on percolation theory, an EAN-in-cyclohexane (IL/O), a bicontinuous, and a cyclohexane-in-EAN (O/IL) microregion were successfully identified using cyclohexane as the titration phase. Dynamic light scattering measurements were used to study the formation of the IL pools. UV–vis spectroscopy using methyl orange as probe material was employed to investigate the micropolarity of the system. The results indicate that the micropolarity of the IL/O microemulsion increases with the EAN content after the IL pools are formed. With this work, we expect to improve the basic understanding of nonaqueous microemulsions.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Chengzhuo Yu,Jin Xu,Li Xiong,Yarui Wang,Silong Wang,Fanglan Geng,Zesen Shang,Huasheng Wu,Lixia Zhao,Yawei Wang
Luminol-based chemiluminescence (CL) systems, as a powerful tool for bioanalysis, are limited owing to their weak CL intensity and self-decomposition of the classic oxidant H2O2. Herein, we introduced a new luminol CL enhancer, the natural light-driven photocatalyst MIL-100(Fe)/TiO2, for the selective determination of dopamine (DA). By employing MIL-100(Fe)/TiO2 for the first time as an efficient enhancer, the MIL-100(Fe)/TiO2-luminol CL intensity was 100 times higher than that of the classical H2O2-luminol system. The CL spectrum, UV–vis absorption spectroscopy, radical scavenger experiments, and electron spin resonance spectroscopy were utilized to investigate the possible CL mechanism of the MIL-100(Fe)/TiO2-luminol system. All of the results indicated that MIL-100(Fe)/TiO2 can generate reactive oxygen species under mild natural light, which could react rapidly with the luminol anion radical and result in direct CL emission. The sensitive plate for DA was developed based on its inhibiting effect on CL intensity, and the linear range between CL intensity and DA concentration was 100 nM–1000 μM with a detection limit of 16.7 μM (S/N = 3). This study successfully achieved a stable reactant that can directly trigger the CL of luminol without the need for additional oxidizing agents under mild natural light and offers new possibilities for photoinduced amplification technology.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Shuyu Chen,Zhengkai Wu,Xueying Cheng,Lu Chen,Yunning Chen,Yingna Guo,Changhua Wang,Qingkun Shang
In this work, we used a simple hydrothermal method to in-situ grow Zn 3 In 2 S 6 on MIL-100(Fe) octahedra, and obtained a MIL-100(Fe)@Zn 3 In 2 S 6 Z-scheme heterojunction photocatalyst. We systematically studied its performance in degrading phenol and p-nitrophenol (PNP) under visible light. MIL-ZIS 6 -2 can remove 89.1 % of phenol within 120 min and nearly 100 % of PNP within 60 min. Its photocatalytic activity to the degradation of phenol is 30.7 times and 1.7 times higher than that of MIL-100(Fe) and Zn 3 In 2 S 6 , respectively. And the photocatalytic activity to degrade PNP is 18.2 times and 1.4 times higher than MIL-100(Fe) and Zn 3 In 2 S 6 . Further research was conducted on its band structure and photocatalytic response mechanism through photoelectric performance, ultraviolet photo-electron spectroscopy, and electron spin resonance spectrometer testing. The results showed that the formation of Z-scheme heterojunction not only increased the specific surface area of the composite photocatalyst, enabling it to provide more reaction sites, but also effectively suppressed the recombination of photogenerated holes and electrons, improving the redox ability of the photocatalyst. This work provides a new perspective for constructing efficient Zn 3 In 2 S 6 -based composite photocatalysts and addressing environmental issues.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Rong-Gang Zhang,Rui Feng,Fang Wang,Hang-Lin Li,Ren-Yi Sun,Hui-Hui Gao,Chun-Bo Li,Yu-Zhong Wang,Fei Song
Waterborne preparation of superhydrophobic coatings now becomes strongly favored because of its environmental and health friendliness. However, the huge surface energy difference between low surface-energy components and water still poses a challenge for achieving their co-dispersion. Here, a surfactant-mediated protection strategy is proposed to achieve well dispersion of both SiO 2 nanoparticles and perfluorosilane in water as well as block their conjugation, thereby fabricating a 100% waterborne F-FC-SiO 2 suspension with high homogeneity and dispersion stability. During the painting and drying process, demulsification spontaneously triggers the deprotection and enables sufficient covalent conjugation between perfluorosilane and SiO 2 , thus achieving a superhydrophobic coating. This supramolecular protection/deprotection approach enables high compatibility of the F-FC-SiO 2 suspension with versatile waterborne polymer emulsions (e.g., waterborne polyurethane, waterborne polysiloxane, and waterborne epoxy resin) to fabricate durable superhydrophobic coatings. The resulting composite coating can impart super-repellency to various substrates against aqueous solutions and multiple oils, displaying high antifouling and self-cleaning properties, as well as resistance to extreme mechanical abrasion and weathering. This work provides a promising approach for the convenient production of totally waterborne superhydrophobic coatings.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2025
·
IF 2.3
Xiaoli Ding,Qiankun Zhang,Hongyong Zhao,Qingping Xin,Yuzhong Zhang
Two series of mixed matrix membranes (MMMs) have been synthesized via in situ UV polymerization for the removal of N2 from CH4. MIL-100(Cr) particles activated at different temperatures were used as fillers. MIL-100(Cr) activated at 150°C with CH4-selective adsorption was incorporated with poly(ethylene oxide)-based polymer to improve the CH4/N2 separation performance, and that activated at 250°C with N2-selective adsorption and diffusion was incorporated with fluoropolymer to improve the N2/CH4 separation performance. The effects of the filler loadings on the gas permeation and separation performances were investigated. The optimum MMMs with 5 wt.% loading of MIL-100(Cr) activated at 150°C exhibited a 70% increased CH4/N2 permselectivity of 5.0 with a 37% increased CH4 permeability of 11.2 Barrer (tested at 0.2 MPa and 35°C). The optimum MMMs with 5 wt.% loading of MIL-100(Cr) activated at 250°C exhibited a 106% increased N2 permeability of 71.5 Barrer with an 89% increased N2/CH4 permselectivity of 1.9.
✓ 已验证
产品关联
DOI
高影响因子
Membranes
·
2025
·Vol. 15
·期 9
·261
·
IF 3.6
Jinsuo Yu,Chenyang Jiang,Yanjun Wang,Zemin Li,Yawei Gu,Rujing Hou,Yichang Pan
Efficient xylene isomers’ separation remains a challenge due to their similar kinetic diameter and boiling points, particularly for the separation of the immediate size of meta-xylene (MX). A metal–organic framework (MOF) membrane offers the opportunity to realize the isomers’ separation due to the highly tunable pore size and pore environment. Herein, an In-based hierarchic MOF (MIL-100) with a size of 0.77 nm was screened, aiming at the realization for isomer separation through pore size matching. Meanwhile, the polar microenvironment in the MOF channel built through trimesic acid ligands contributes to the higher affinity to the MX relative to the PX. With the equimolar feed mixture of MX/PX, the optimal membrane demonstrated a total flux of 7.6 kg·m−2·h−1and an MX/PX separation factor of 2.54 at room temperature through pervaporation. Such performance highly indicates the possibility for efficient liquid xylene separation in future.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biosensors-Basel
·
2024
·Vol. 14
·期 10
·505
·
IF 4.9
Zhenzhen Li,Lei Wang,Mengjie Tang,Yulong Sun,Li Zhang,Zhongxiu Chen
Triton X-100 (TX-100) is a commonly used surfactant in the manufacture of biosensors. The factors limiting the use of TX-100 in biosensors are environmental concerns. In this study, the binary system of sodium dodecyl benzene sulfonate (SDBS) and fatty alcohol-polyoxyethlene ether (AEO) was investigated from the physicochemical principle of surfactant interaction and its application in biosensors. The results demonstrated that a mixture of SDBS and AEO at an appropriate molar ratio had a comparable activity to TX-100 in terms of surface activity, micelle formation, dynamic adsorption, foaming, emulsifying, and cell permeability. Theory and experimentation support the idea that SDBS-AEO might take the place of TX-100 in the manufacturing of biosensors. This study contributes to the development of alternatives to TX-100 and provides a new perspective for an in-depth study of the interaction mechanism of additives in biosensor design.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 39
·33326-33337
·
IF 9.5
Mengran Chen,Zhendong Mao,Heng Liu,Shun Wan,Xugui Xia,Xuefei Zhang,Chuanrui Zhang,Qingfeng Song,Shengqiang Bai,Peng-an Zong
Bi80Sb20-based alloys are promising candidates for thermoelectric applications below room temperature. However, their inherently low thermoelectric performance, characterized by a limited power factor and high lattice thermal conductivity, severely hinders practical utilization. To address this challenge, we introduce Fe3O4 nanoparticles as a second phase to construct Bi80Sb20/Fe3O4 nanocomposites via a high-efficiency mechanical alloying process, assisted by stearic acid dispersion, followed by spark plasma sintering. The incorporation of nano-Fe3O4 leads to enhanced carrier mobility and intensified phonon scattering at nanoparticle interfaces, resulting in a remarkable threefold increase in the power factor and a 20–40% reduction in lattice thermal conductivity. As a result, the optimized composite with 0.4 vol% Fe3O4 achieves a peak zT of 0.31 at 242 K – representing nearly a 100% improvement over the pristine matrix – and an average zT of 0.29 in the range of 150–300 K. In addition to the thermoelectric enhancements, the Vickers hardness of the composites is also significantly improved. These findings demonstrate the potential of superparamagnetic Fe3O4 nanoparticle incorporation as an effective strategy for the simultaneous enhancement of both thermoelectric and mechanical properties in Bi80Sb20-based alloys, offering a viable pathway for low-temperature power generation and refrigeration applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Peiwen Wu,Kailong Yu,Shuaishuai Zhou,Jing He,Haiyan Ji,Linlin Chen,Yan Huang,Hui Liu,Jixing Liu,Huaming Li,Wenshuai Zhu
Efficient oxidative desulfurization (ODS) of aromatic sulfur compounds under mild and green conditions remains a major challenge due to the limited activation ability of molecular oxygen and poor stability of traditional catalysts. In this work, a series of HPMo@MIL-100 catalysts were synthesized for ODS of fuel oils using molecular oxygen as a green oxidant. The introduction of HPMo into the MIL-100 framework not only improved the catalytic performance but also significantly regulated the electronic environment of the Fe active centers. Structural and electronic characterizations confirmed that HPMo incorporation decreased crystallinity, increased surface defects, and facilitated electron transfer within the framework. Detailed experiments identified superoxide radicals as the dominant reactive species, efficiently generated under the synergistic effect of HPMo and MIL-100. The optimized catalyst, HPMo@MIL-100–2, achieved complete removal of aromatic sulfides within 3 h at 120 °C and the aromatic sulfides were selectively conversed to corresponding sulfones. In addition, the catalyst demonstrated excellent recyclability, which can be reused 9 times without significant decrease in ODS performance. Furthermore, a desulfurization efficiency of 95.7 % was achieved to real FCC diesel, highlighting the catalyst’s potential for industrial application. This study provides an effective strategy for tuning MOF catalytic systems through electron modulation, enabling highly efficient, selective, and recyclable ODS performance under mild conditions.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2017
·
IF 2.084
Jianxu Ding,Songjie Du,Xiaohua Cheng,Lin Jing,Ying Zhao,Zhiyuan Zuo,Hongzhi Cui,Xiaoyuan Zhan
Organic-inorganic hybrid methylammonium lead iodide perovskite (MAPbI 3 ) is considered as new generation optoelectronic material. MAPbI 3 single crystal is proved more excellent than its polycrystalline film and nano state counterparts, though the discrepancy is still pending. Referring MAPbI 3 single crystal applications, physical anisotropy stands in its breach. However, it has not been drawn enough attentions till now. In this study, taking advantages of the natural exposed (100) and (112) facets of MAPbI 3 single crystal grown from γ-butyrolactone (GBL) solution, the anisotropic optoelectronic performances based on of these two lattice planes were systematically explored through planar metal-semiconductor-metal (MSM) devices. An order enhanced photocurrents , 135% increased responsivity, and 128% heightened EQE on (112) plane device than those on (100) plane device under 5 V bias with irradiation power of 1 mW, remarkably demonstrated that (112) plane was more excellent in optoelectronic performances and light harvesting capability.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）