JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 53
·期 5
·3332-3340
·
IF 2.599
Ding Dong,Zhou Bo,Fu Wuyou,Lv Pin,Yao Huizhen,Liu Li,Wang Jun,Yang Haibin
Herein, we report an ionic cross-linkage process of synthesizing [001] preferred oriented anatase TiO 2 nanowires and nanotubes hybrid structure (TWTs) based on anodization method wherein varied amounts of TiF 6
2− ions are added in synthetic process. We show how the TiF 6
2− ions switch the growth direction of TWTs from [101] to [001] (denoted as T 101 WTs and T 001 WTs, respectively) and change their geometrical morphologies, i.e., small ionic radii TiF 6
2− ions migrate and partly replace the TiO 6
2− octahedra under electric field, which separate out and leave vacancies during annealing process, resulting in a reconstruction of TiO 2 . Importantly, absorption property and photoelectrochemical (PEC) performance of T 001 WTs exceed those of T 101 WTs. Furthermore, CdS QDs are assembled onto TWTs photoelectrodes by successive ionic layer adsorption and reaction technique. Likewise, T 001 WT/CdS presents superior absorption capability and enhanced PEC performance to those of T 101 WT/CdS. This could be attributed to their preponderances of improved light absorption capability and decreased electron recombination.
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高影响因子
FIBERS AND POLYMERS
·
2017
·Vol. 18
·期 10
·1975-1980
·
IF 1.113
Li Mingzhuan,Li Zhanyu,Wang Jun,Wang Caihong,Lu Shengjun
In this work, a simple and low cost method based on screen printing is presented to synthesize a conductive silver pattern on aramid fabric. The aramid fiber was treated with (3-mercaptopropyl)-trimethoxysilane to introduce a tail mercapto group promoting the ordered binding of silver nanoparticles. SEM and AFM images indicated a uniform distribution of silver nanoparticles on fiber surface. FTIR and XRD patterns confirmed the silver layer on the fibers. Furthermore, the electrical property of conductive fiber was characterized by conductive AFM and a digital multimeter, the surface resistance of conductive fabric was as low as 0.20 Ω/cm. And single fiber tensile test indicated that the mild treating process has no significant influence on the mechanical properties of the fiber.
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高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2017
·Vol. 33
·期 6
·946-950
·
IF 1.024
Ji Ye,Han Tianyi,Zhang Yong,Wang Ziying,Zhang Tong,Leng Jiyan
Ag nanocubes-reduced graphene oxide(AgNCs-rGO) nanocomposite was successfully prepared by an in situ synthesis method, in which AgNCs were loaded onto the surface of rGO during the formation of AgNCs in an ethylene glycol solution. Characterization by X-ray diffraction, UV-Vis spectroscopy, and scanning electron microscopy indicated the successful preparation of the AgNCs-rGO nanocomposite. Most importantly, the AgNCs-rGO nanocomposite exhibited excellent electrocatalytic activity for the reduction of H 2 O 2 , leading to a high-performance non-enzymatic H 2 O 2 sensor with a linear detection range and detection limit of approximately 0.1 mmol/L to 70 mmol/L( r =0.999) and 0.58 μmol/L, respectively. Our present work provides a new and highly efficient method for fabricating high-performance electrochemical sensors.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 52
·期 24
·13930-13939
·
IF 2.599
Wang Ruiqin,Guo Weilin,Li Xianghui,Liu Zhonghua,Liu Hua,Ding Shiyang
The three-dimensional graphene microspheres with well-defined shape and size were prepared successfully by a novel approach, i.e., a combination of microfluidic device and freeze-drying. In the synthetic process, a pragmatic and facile device has been designed for the controllable generation of uniform-sized droplets. Followed by freeze-drying, highly porous spherical graphene microballs were obtained for further research. It is worth noting that the size of the droplets can also be controlled by adjusting the flow rate ratio of each phase. Afterward, the morphology, structure and character of the three-dimensional graphene particles are characterized by scanning electron microscope, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Due to their highly porous structure, the as-prepared 3D graphene microspheres were employed as adsorbent. The adsorption capacity of acid orange 7 and Pb(II) was about 71.9 and 147.7 mg g −1 , respectively. The results showed that the porous 3D graphene microspheres as adsorbent possessed excellent adsorption ability for organic and inorganic contaminants in this work, showing their potential applications in environmental pollutant treatment.
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高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2017
·Vol. 48
·期 5
·2535-2542
·
IF 1.642
Zhang Zhong-Lin,Zhou Lin-Zong,Ji De-Bin,Yan Yong-De,Hong Wei,Liu Yu-Hui,Wang Pu,Yin Tai-Qi,Zheng Jia-Ning,Xue Yun,Ye Yuan-Feng
Electrochemical behavior of Nd was studied in NaCl-KCl melt on W and Cu electrodes via cyclic voltammetry and chronopotentiometry. Generally, the reduction of Nd 3+ takes place in two consecutive steps in molten chlorides, such as LiCl-CaCl 2 , LiCl-BaCl 2 , CaCl 2 -NaCl, LiCl-KCl melts. However, the reduction of Nd 3+ ions was found to be through a one-step process: Nd 3+ + 3e − → Nd. The co-reduction behavior of Nd 3+ and Cu 2+ ions and the mechanisms of alloy formation were investigated in NaCl-KCl melt on W electrodes at 988 K (715 °C). Four potential plateaus corresponding to four different kinds of Cu-Nd intermetallic compounds were detected. Cu-Nd alloys were prepared on Cu electrodes at 988 K (715 °C) and 1143 K (870 °C). At 988 K (715 °C), Cu 5 Nd phase was identified by X-ray diffraction. The morphology and micro-zone chemical analysis of the alloys were characterized by scanning electron microscopy equipped with energy-dispersive spectrometry. The alloy film was observed on the Cu electrodes. Moreover, at 1143 K (870 °C), a globate bulk Cu-Nd alloy with Cu 5 Nd, Cu 4 Nd, Cu 2 Nd, CuNd, and Cu phases, as liquid in the melt, was obtained at the bottom of the crucible.
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IONICS
·
2017
·Vol. 24
·期 2
·549-561
·
IF 2.062
Ma Guofu,Hua Fengting,Sun Kanjun,Feng Enke,Zhang Zhiguo,Peng Hui,Lei Ziqiang
The design of composited porous carbon-based electrode materials is keyed to improve the electrochemical performance for supercapacitors. Here, the natural carrot is used as a precursor to prepare porous carbon skeletons (CCs). Three different anthraquinones: anthraquinone (AQ), amino-anthraquinone (1-AAQ), and 2-aminoanthraquinone (2-AAQ) are used to modify the carbon skeletons with absorption. The maximum capacitance is obtained from material modified with 1-AAQ; it (1-AAQ-CC2) exhibits a noticeable pseudocapacitive performance with a brilliant capacitance of 328 F g −1 at 0.5 A g −1 and excellent cyclic stability (95% capacitance retention after 5000 cycles at 3 A g −1 ) in 2 mol L −1 KOH aqueous electrolyte. Moreover, the assembled 1-AAQ-CC2/1-AAQ-CC2 symmetric supercapacitor exhibits a high energy density of 14.8 Wh kg −1 at a power density of 240 W kg −1 operated at the voltage range of 0 to 1.8 V in 0.5 mol L −1 Na 2 SO 4 aqueous electrolyte. These results exhibit eco-friendly and low-cost design of organic and inorganic composite electrode materials for high-performance supercapacitors.
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高影响因子
Food Analytical Methods
·
2017
·Vol. 10
·期 10
·3415-3423
·
IF 2.038
Sha Min,Zhang Zhengyong,Gui Dongdong,Wang Yanbo,Fu Linglin,Wang Haiyan
A fingerprinting approach was developed by means of high-performance ion mobility spectrometry with direct electrospray ionization (ESI-HPIMS) for the quality consistency and authentication of apple essence which contain many analytes. Thirty-four apple essence samples of the same brand and commercialized as a same product but brewed in four different manufacturers were used to establish the fingerprints. Hierarchical clustering analysis (HCA) was performed to evaluate the similarity and variation of these samples. A combined data matrix was constructed with the use of individual data matrix of ion mobility spectrum in positive and negative ion modes. For comparison, ion mobility spectrum fingerprints in positive and negative ion modes respectively were also applied to the quality assessment of the same samples. Finally, our study demonstrated that the fusion of fingerprints did indeed provide more information and could be used to comprehensively conduct the quality consistency evaluation and discrimination of apple essences from similar products. It is suggested that this fingerprint approach is suitable for analysis of other complex, multianalyte substances.
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高影响因子
Plasmonics
·
2016
·Vol. 12
·期 6
·1841-1845
·
IF 2.146
Zhang Mingdi,Ren Zebin,Dong Jun,Wang Zhaojin,Han Qinyan,Zhang Chenyun,Zheng Hairong
A two-dimension distributed metallic nanostructure substrate containing two-dimensional array of Au nanorods with different configurations is prepared via a self-assembly method. Enhanced fluorescence emission with assembled substrate is investigated by employing Rhodamine 6G as probe molecule. The experimental observation shows that the prepared nanostructure substrate has strong fluorescence enhancement effect and the enhancement effect critically depends on the configuration of the particle distribution. The study demonstrates that the local electromagnetic field enhancement around the gold nanorod array plays an important role in achieving fluorescence enhancement with the assembled substrate array. This work suggests that the assembled substrate can be considered as a potential candidate for effective enhancement application.
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CELLULOSE
·
2016
·Vol. 23
·期 2
·1375-1382
·
IF 3.195
Li Qing,Chen Wenshuai,Li Yanna,Guo Xiaoyu,Song Shan,Wang Qingwen,Liu Yixing,Li Jian,Yu Haipeng,Zeng Jie
This article describes the comparative study of the structure, mechanical and thermomechanical properties of cellulose nanopapers with different thicknesses. Cellulose nanopapers were fabricated by vacuum-filtering cellulose nanofiber (CNF) suspensions. The surfaces of the nanopapers consisted of long and entangled CNFs (10–30 nm in width) and their aggregates, while cross-sections exhibited parallel aligned lamellar structures. The nanopaper thickness can be tailored by controlling the amounts of CNF suspensions used for filtration. Owing to the packing density of CNFs, nanopapers with different thicknesses had similar densities of ~1.50 g cm −3 . The thin nanopapers were transparent and flexible. With increasing thickness, the Young’s modulus of the nanopapers slightly decreased, while the ultimate strain and work of fracture increased. The thicker nanopapers displayed higher storage and loss modulus. The nanopapers still kept advantageous mechanical properties even at high temperatures around 260 °C because of the high thermal stability of CNFs and their strong entangled web-like structures.
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Journal of Natural Medicines
·
2016
·Vol. 70
·期 3
·531-538
·
IF 1.67
Ge Yue-bin,Wang Zhi-gang,Xiong Ying,Huang Xian-ju,Mei Zhi-nan,Hong Zong-guo
Artemisia argyi leaf is a well-known species in traditional Chinese medicine. However, the anti-inflammatory and activating blood stasis activities of its essential oil (AAEO) have not been explored in vivo. The present study measured the contents of three chemical components by gas chromatography (GC). The anti-acute inflammatory effects of AAEO were investigated in dimethyl benzene, glacial acetic acid and carrageenan-induced animals through skin administration or by oral gavage, respectively. The effects of AAEO on haemorheology were studied in a rat acute blood stasis model. The contents of eucalyptol, camphor and borneol in AAEO were 254.4, 51.6 and 58.7 mg/g, respectively. All dosages of AAEO by skin administration significantly decreased the swelling in dimethyl benzene-induced ear oedema and carrageenan-induced paw oedema, and reduced the permeability in glacial acetic acid-induced abdominal blood capillary ( p < 0.01). Meanwhile, haemorheology indexes such as whole blood viscosity and the erythrocyte aggregation index significantly decreased only in the high dosage group. In addition, the effects of AAEO by oral gavage were weaker than skin administration at the medium dose in the experiments. It suggests that AAEO has better absorption bioavailability and pharmacological effects through skin administration due to the better skin permeability of essential oil than gastrointestinal absorption.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 51
·期 11
·5240-5251
·
IF 2.302
Yu Bing,Tian Chao,Cong Hailin,Xu Tao
Monodisperse poly(styrene- co -divinylbenzene) (PS-DVB) microspheres with binary porous structures were synthesized using a modified seeded polymerization method. The microspheres had small pores on the surface and big pores in the middle. Using the binary porous PS-DVB (BPPSD) microspheres as packing materials for high-performance liquid chromatography, several benzene analogs were effectively separated in a column as short as 75 mm due to the high surface areas of the stationary phase. Because of the π–π affinity interaction between BPPSD particles and analytes, the separation performance of the BPPSD column was better than commercialized C 18 column at the same conditions. Compared to column filled with non-porous PS-DVB particles, the back pressure of BPPSD column could be maintained at especially low level even at high flow rates due to the excellent permeability of the fillers. In addition, approximate baseline separation of C 60 and C 70 was also achieved in the 75 mm BPPSD column.
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JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 51
·期 9
·4342-4348
·
IF 2.302
Xu Yanqiu,Hu Xiulan,Zhu Haikui,Zhang Jianbo
Bismuth oxychloride (BiOCl) with tunable structures and morphologies were successfully synthesized through a facile solvothermal method in water–methanol solution. Size and shape of BiOCl could be effectively tuned by adjusting the volume fraction of water in water–methanol solution. With the increasing water content, BiOCl grows along the c -axis [001] orientation, and the exposure of {001} facets also increases. In the case of 10 % water, dispersed BiOCl nanoplates with the size of 200 nm and the thickness of 40 nm were obtained instead of microspheres as obtained in pure methanol. These BiOCl nanoplates showed higher photocatalytic activity toward methyl orange (MO) than BiOCl microspheres and higher degradation activity for rhodamine B (RhB) than P25. The excellent photocatalytic activity of BiOCl nanoplates could be mainly attributed to its effective separation of electron–hole pairs, increased exposure of {001} facets, and reductions in size and thickness. And BiOCl nanoplates prepared with 15 % water exhibit promising oxygen reduction reaction performance in alkaline electrolyte (KOH) due to the increased exposure of {001} facets.
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危险品化学品经营许可证（带存储）