Journal of Cleaner Production
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2018
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IF 5.651
Xuechuan Wang,Zhuan Yan,Xinhua Liu,Taotao Qiang,Liang Chen,Peiying Guo,Ouyang Yue
Chromotropic Acid Grafted Amphoteric Polyurethane (CAGAPU) was synthesized with Chromotropic Acid (CA) as a modifier for Polyurethane (PU). The structure of CAGAPU was confirmed by FT-IR, 1 H-NMR. The retanning process and the experiments of CAGAPU with formaldehyde indicate the following: (1) The leather retanned by CAGAPU can be comparable or surpassed to the market PU-based retanning system in terms of shrinkage temperature and sensory performance. (2) The leather collagen fibers are smoother and orderly which provides a potential value for the appearance of the leather and fur industry. (3) The CAGAPU retanned system can bring down the free formaldehyde content in aldehyde tanned leather significantly. (4) The optimum dosage of CAGAPU is 20 g and the best retanning time is 6 h (5) The CAGAPU retanned system can reduce the free formaldehyde, Biochemical Oxygen Demand (BOD), Total Dissolved Solids (TDS) and Total Suspended Solid (TSS) from the source which retard pound on the economy and environment greatly compare to the traditional governance. Therefore, this paper provides the possibility for the sustainable development of leather. The work has changed the traditional way of “terminal treatment” and realized the “initial treatment” and may also offer a new idea of solving the problem of formaldehyde in the newly decorated houses or in the air.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2018
·Vol. 54
·期 7
·5802-5812
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IF 2.993
Zheng Boda,Zhu Qingsheng,Zhao Yang
In this work, we reported a facile approach to fabricate silver nanowire (AgNW) networks on flexible substrates. Through immersing the modified poly (ethylene terephthalate) with positively charged functional group into the AgNW dispersion with anionic dispersant, a flexible AgNW transparent conductive film was formed by electrostatic adsorption self-assembly process. Even without a post-treatment process, the as-prepared flexible AgNW films exhibited excellent optoelectrical property, low surface roughness and high reliability. It was shown that the insulating dispersant on AgNWs could be effectively removed by an ion bombardment method and then greatly decreased the sheet resistance of AgNW networks. Because of the nature of spontaneous adsorption, this preparation method can be suitable for an arbitrary shaped substrate, which will broaden the application of AgNW conductive films in optoelectronic devices.
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ELECTROCHIMICA ACTA
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2018
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IF 5.116
Tao Yang,Xiaodong Tian,Xiao Li,Yan Song,Zhanjun Liu,Quangui Guo
In this work, a smart architecture (Si@void@C@TiO 2 ) with hierarchical micro/mesopores is fabricated by in situ construction. Anatase-TiO 2 particles are self-assembly anchored on the Si@void@C and some are potentially filling into the large mesopores of Si@void@C and then form incomplete cover followed by annealing. The unique cooperative coating not only offers stronger protections on account of Ti O C bond which increases the adhesion, but also optimizes the distribution of micro/mesopores, and thus provides fast electrons/ions transportation channels to active materials. As a consequence, the unique structure endows the electrode better rate capability and more superior cycling stability with 0.11% decay per cycle than Si@void@C (0.30% decay per cycle), manifesting the dominance of the incomplete cover for Si-based anodes.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2018
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IF 3.927
Houxiao Wu,Yongwei Chen,Daofei Lv,Renfeng Shi,Yang Chen,Zhong Li,Qibin Xia
The purification of ethylene (C 2 H 4 ) from the cracking gas ethane/ethylene mixture (1:15, v / v ) is a typical energy-intensive process in the chemical industry. As an alternative, adsorptive separation with much lower energy consumption and operational cost has attracted escalating attention. In this work, we reported an interesting C 2 H 6 -trapping adsorbent, In-soc-MOF-1, an indium-based metal-organic framework exhibiting the preferential adsorption of C 2 H 6 over C 2 H 4 . Single-component adsorption isotherms showed that the C 2 H 6 adsorption capacities were higher than those of C 2 H 4 under measured temperatures (288, 298 and 308 K). For example, the uptakes of C 2 H 6 and C 2 H 4 were 4.04 and 3.72 mmol/g at 298 K and 100 kPa, respectively. The calculated IAST selectivity of C 2 H 6 /C 2 H 4 (1:15) on In-soc-MOF-1 was in the range of 1.4–4.8. Moreover, the dynamic separation performance of In-soc-MOF-1 toward the C 2 H 6 /C 2 H 4 binary mixture was evaluated by the breakthrough experiments, the result of which suggests that In-soc-MOF-1 could achieve efficient separation by trapping the impurity C 2 H 6 molecules out of the C 2 H 6 /C 2 H 4 binary mixture. Notably, In-soc-MOF-1 not only showed good water and moisture stability but also exhibited excellent recyclability, where negligible decrease in C 2 H 6 adsorption capacity was observed during five cycles of adsorption-desorption tests. These properties suggest that In-soc-MOF-1, as a C 2 H 6 -trapping adsorbent, could be considered as a potential candidate in the practical application of separating the cracking gas mixture.
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ANALYTICAL BIOCHEMISTRY
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2018
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IF 2.275
Xiao-Ling Tang,Hui Suo,Ren-Chao Zheng,Yu-Guo Zheng
Tyrosine phenol-lyase (TPL) naturally catalyzes the reversible β-elimination of l -tyrosine to phenol, pyruvate and ammonium. With its reverse reaction (synthetic activity), l -tyrosine and its derivatives could be synthesized with high atom economy, which are widely used in pharmaceutical industries . In this study, a high-throughput screening method for synthetic activity of TPL was developed. One of the substrate, sodium pyruvate was found to react with salicylaldehyde under alkali condition, forming a yellow color compound. The concentration of sodium pyruvate can be quantified according to the absorbance of the colorimetric compound at wavelength of 465 nm and the activity of TPL could be screened according to the decrease of the absorbance. After optimization of the colorimetric reaction conditions, the established high-throughput screening method was successfully used for screening of TPL with enhanced activity for l -DOPA synthesis. The confirmed sensitivity and accuracy demonstrated the feasibility and application potential of this screening method.
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PubMed
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
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2015
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IF 4.847
Tingting Liu,Yanhui Liang,Qian Liu,Xuping Sun,Yuquan He,Abdullah M. Asiri
In this communication, we report the development of cobalt-sulfide nanosheets film on Ti mesh (Co-S/Ti mesh) via electrodeposition as a novel oxygen evolution anode in basic media. Electrochemical experiments suggest that this Co-S/Ti mesh electrode exhibits high catalytic activity and good stability. It needs overpotential of 361 mV to drive current density of 10 mA cm − 2 and its catalytic activity is maintained for at least 20 h.
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Analytical Methods
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2014
·Vol. 7
·期 4
·1387-1394
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IF 1.938
Lu Lin,Hui-Ting Lian,Xiang-Ying Sun,Ya-Ming Yu,Bin Liu
A molecularly imprinted polymer (MIP) based sensor for detecting L-dopa was fabricated based on the composite of graphene (GR) and chitosan (CS). The microstructure and composition of the imprinted films characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), Raman spectroscopy and electrochemical impedance spectroscopy (EIS) indicated that the modified film of GR-MIPs had been formed successfully. Electrochemical evaluation results showed that the sensor exhibited a satisfactory selectivity for molecular binding with an imprinting factor (IF) of 6.2 and a wide linear range from 0.4 μM to 100 μM with a low detection limit of 0.012 μM. This electrochemical sensor exhibited great promise for accurate determination of L-dopa in pharmaceutical preparations and human blood serum for recoveries ranging from 95.0 to 108.0%. Furthermore, compared to imprinted films without graphene doping, GR-MIPs showed a superior chiral sensing for L-dopa in the presence of D-dopa. The results reveal that the insertion of graphene brought about an enhanced sensitivity for chiral sensing and has the potential for application in chiral recognition.
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JOURNAL OF NUCLEAR MATERIALS
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2014
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IF 2.016
Xiujie He,Jinliang Song,Jie Tan,Baoliang Zhang,Huihao Xia,Zhoutong He,Xingtai Zhou,Mingwen Zhao,Xiangdong Liu,Li Xu,Shuo Bai
SiC coating is produced on a nuclear graphite (NG) substrate using chemical vapor deposition at 1150 °C to protect it from molten salt diffusion . Infiltration studies, performed in molten FLiNaK salt under an argon atmosphere at 5 atm, show that uncoated NG exhibits significantly higher weight gain than SiC-coated NG. The continuous and compact SiC coating exhibits excellent infiltration resistance in liquid fluoride salt as confirmed by synchrotron radiation X-ray microbeam fluorescence.
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高影响因子
RSC Advances
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2013
·Vol. 4
·期 18
·9031-9038
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IF 2.562
Delin Cheng,Xiaodong Cao,Huichang Gao,Xiaoling Ye,Wenxiu Li,Yingjun Wang
Composite polymer devices have gained considerable interest in biomedical applications. In this work, a composite poly(lactic-co-glycolic acid)/poly(ε-caprolactone) (PLGA/PCL) microsphere with a layered architecture and an island–sea topography was developed. PCL was found to occupy the shell layer of the microsphere, while PLGA constituted surface islands and the internal core. This subtle structure was derived from the different external and internal rates of phase separation between PCL and PLGA. The existence of the PLGA islands enhanced the hydrophilicity of the PCL shell. Mouse mesenchymal stem cells (mMSCs) were cultured and they grew well on the PLGA/PCL microspheres. The surface of the microsphere was microscopically composed of PCL sea and PLGA islands, and the mMSCs showed a trend to attach to the more hydrophilic PLGA islands and bridged between adjacent microspheres. This paper provides a new alternative to design functional microspheres for potential application in tissue repair.
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Catalysts
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2015
·Vol. 5
·期 4
·1897-1910
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IF 2
Shiqiang Zhao,Guizhuan Xu,Chun Chang,Shuqi Fang,Ze Liu,Fengguang Du
A series of metal-modified phosphotungstates were prepared and performed for direct synthesis of ethyl levulinate from fructose in ethanol. Considering the cost of catalysts, catalytic activity of catalysts, and easy separation of catalysts together, K-HPW-1 was chosen as the most suitable catalyst for synthesis of ethyl levulinate from fructose. A high ethyl levulinate yield of 64.6 mol% was obtained at 150 °C within 2 h in ethanol. The introduction of low polar toluene as a co-solvent improved the yield of ethyl levulinate to 68.7 mol%. The recovered catalyst remained high activity with the yield of ethyl levulinate converted from fructose above 50 mol% after being used five times. Moreover, the generality of the catalyst was further demonstrated by glucose, sucrose, inulin, and cellulose with ethyl levulinate yielding 14.5, 35.4, 52.3, and 14.8 mol%, respectively.Keywords:ethyl levulinate;carbohydrates;potassium phosphotungstate
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CARBON
·
2015
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IF 6.196
Guoxin Zhang,Kang Zhou,Ruoyu Xu,Hekai Chen,Xiaoke Ma,Biao Zhang,Zheng Chang,Xiaoming Sun
In this study, we report a potentially scalable strategy for the cost/time-efficient production of water-soluble functionalized few layered graphene (FcG) through the mild defluorination of graphite fluoride (GF) at room temperature (RT). The strategy includes mechanical milling which is of high simplicity and operability, and subsequently water purification . By using heteroatom-containing alkaline such as NaNH 2 and Na 2 S, N or S dopants can be functionalized into the defluorinated graphene, leading to the formation of N- and S-doped FcG, respectively. Our methodology of defluorination of GF allows the fabrication of water soluble FcG in much safer ways relative to the conventional Hummers' method that involves strong acidic/oxidative ambience and disposal of large amount of salt wastes. Meanwhile, the abundance of GF and the simplicity of processibility may also facilitate the practical uses of FcG obtained via our methodology.
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Journal of Materials Chemistry A
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2015
·Vol. 3
·期 25
·13519-13525
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IF 7.443
Yonglian Ye,Ming Jin,Decheng Wan
Gold nanoparticles (AuNPs) are excellent catalysts, but their recycling remains a central concern. Support of AuNPs on a porous monolith is one popular strategy but it usually suffers from multistep and inefficient preparation. Herein, we show a one-pot strategy to recyclable AuNPs supported on a porous monolith. It is known that the polymerization of the oil phase of a high internal phase emulsion (HIPE), stabilized by surfactants, can lead to a macroscopic and porous monolith (polyHIPE). If the surfactant is replaced with a dendritic amphiphile (DA) of PEI@PS (hyperbranched polyethylenimine (PEI) functionalized with polystyrene (PS) and dodecyls), and the water phase is charged with chloroauric acid, then the one-pot fabrication of AuNP-decorated polyHIPE (Au-DA-polyHIPE) is feasible. Alternatively, if Au-DA (AuNP stabilized with PEI@PS) is used instead of the surfactants, then Au-DA-polyHIPE can be similarly obtained. The Au-DA-polyHIPE samples have open-cell and porous structure, and can effectively catalyze the reduction of 4-nitrophenol. The catalytic materials are recyclable without any decrease in activity, at least within 6 cycles, in which the multivalent and multi-ligand PEI should be responsible for the stability.
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高影响因子
危险品化学品经营许可证（带存储）