Science of Advanced Materials
·
2022
·Vol. 14
·期 3
·576-580
·
IF 1.067
Tang Si-Lu,Liu Ya-Lin,Li Xu-Ming,Chen Qian-Wen,Chen Heng-Yu,Zhou Ji-Li,Chen Liang,Gu Zi-Yi,Shao Shi-Xing,Qiao Pei-Zhi,Shen Guo-Dong,Yang Bing-Chuan
The core–shell TiO2 nano-layer spheres were synthesized by hydrothermal method without surfactant, using tetraisopropyl titanate, diethylenetriamine and water as the capping agents. The structure of the products was characterized with X-ray diffraction (XRD), transmission
electron microscope (TEM) and scanning electron microscopy (SEM). The possible formation mechanism and electrocatalytic degradation characters of the products were also discussed.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2016
·Vol. 8
·期 5
·1074-1078
·
IF 1.812
She Boxi,Wan Xuejuan,Tang Jiaoning,Deng Yuanming,Zhou Xiaofeng,Xiao Caihua
Cuprous oxide nanoparticles with diverse morphology and particle size were prepared through reductive solution chemistry routes under alkaline condition. The standard minimal inhibitory concentration (MIC) test against Escherichia coli indicated that both size and morphology
of cuprous oxide nanoparticles played important role in their antibacterial performance. Cuprous oxide nanoparticles with smaller size (∼50 nm) exhibited better antibacterial activity than those with larger size (250∼350 nm); spherical cuprous oxide nanoparticles were found to be superior
to the cubic ones in the bacterial killing process. In addition, the synergistic antibacterial effect of cuprous oxide nanoparticles in the presence of another antibacterial agent, ascorbic acid (AA), was investigated. Experimental results showed that the antibacterial capacity of cuprous
oxide nanoparticles was significantly improved in the presence of ascorbic acid (0.1 wt%). The probable mechanism underlying the synergistic antibacterial activity has been discussed in detail. All the experimental results indicated that the developed low-cost antimicrobial mixture holds promising
application potential.
研究领域:
材料科学
·
微生物学
·
生物医学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2017
·Vol. 9
·期 11
·1895-1904
·
IF 1.671
Song Haixiang,Wang Meng,Wang Yanfei,Zhang Yadong,Umar Ahmad,Guo Zhanhu
In this study, one waterborne polyurethane (WPU) pre-polymer was synthesized by using polypropylene glycol (PPG-2000), 2,2-dimethylolpropionic acid (DMPA) and isophorone di-isocyanate (IPDI) via a step-wise reaction. Then, a series of WPU/graphene oxide (GO) nanocomposites were prepared
by ultra-sonication of GO dispersion and high shear emulsification. The GO and the WPU/GO nanocomposites were characterized by the Fourier transform infrared spectroscopy (FTIR), particle size analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy
(TEM), water contact angles test, atomic force microscopy (AFM), Raman spectroscopy, tensile properties test, thermo-gravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results showed that the WPU/GO emulsions exhibited optimal dispersion stability, the particle size
of WPU/GO increased compared with that of virgin WPU. While the GO amount in the WPU/GO nanocomposites was 0.25–0.50 wt% (based on the weight of WPU resin), the GO could be dispersed homogeneously, yet the water contact angle values for the WPU/GO films were higher than that of pure
WPU, an increase from 58.83 for pure WPU to 61.38 for the GO content of 0.25%, and 62.32 for the GO content of 0.50%, respectively, showing an improvement in the hydrophobic properties. Furthermore, with the GO content increased from 0.00 (WPU0) to 0.25% (WPU1), the tensile strength of the
film got 60.69% improvement from 2.90 to 4.66 MPa, whereas the GO content increased from 0.25 (WPU1) to 0.50% (WPU2), the tensile strength of the films decreased from 4.66 to 4.31 MPa, with further increasing GO content, the elongation at break of the WPU/GO films decreased correspondingly.
Finally, better synergy interactions between WPU and GO were observed, and the micro-phase separation was reduced.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2014
·Vol. 6
·期 12
·2603-2610
·
IF 2.908
Ai Jing,Chen Yan,Jing Hui,Gao Xuechuan,Liu Jiayin,Ma Kexin,Suo Jian,Yu Shiyong,Song Shuyan
The intercalation of gentamicin sulfate (GS) into novel zirconium phosphate (ZrP) nano-platelets has been achieved using a hydrated ZrP phase known as the -ZrP (Zr(HPO4)2·6H2O) which possesses six water molecules per formula unit. This paper revealed
the successful intercalation of the GS into -ZrP at different molar ratios of GS: -ZrP (1:10,1:5,1:2), which were demonstrated by the emergence of a new phase in the X-ray powder diffraction (XRD) pattern with an interlayer distance of 13.1 Å. The morphologies
and sizes of the samples were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) which showed the characteristic platelet-like hexagonal shape of the ZrP nanoparticles. Compared to spherical shape particles the hexagonal shape may show better margination,
adhesion, and binding properties. The average particle size of GS: -ZrP nano-platelets was 120 nm in diameter and the average thickness of the particles was 10 nm. The drug release in vitro on the obtained GS: -ZrP nano-platelets was carried out in pH 7.4
buffer solution at 37 °C. The cytotoxicity cell viability experiments in vitro for the GS and GS: -ZrP nanoparticles showed that GS:ZrP had low cytotoxicity. Overall, our study demonstrated that the GS: -ZrP nanoparticles possessed a moderate GS loading
efficiency, low cytotoxicity and favorable biocompatibility.
研究领域:
材料科学
·
药理学
·
纳米医学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2019
·Vol. 11
·期 6
·842-853
·
IF 1.158
Xu Qiyao,Liu Hongxia,Zheng Huaili,Liang Jianjun
In this study, a new cationic polyacrylamide (CPAM) was successfully synthesized through UV-H2O2-initiated polymerization technique using acryloyloxyethyl trimethyl ammonium chloride (DAC) and acrylamide (AM) as monomers, and applied to sludge dewatering experiments.
Parameters affecting the molecular weight and conversion of the polymers, including total monomer concentration, monomer concentration of DAC, H2O2 concentration, pH and illumination time were examined. Fourier transform infrared spectroscopy (FT-IR), 1H nuclear
magnetic resonance spectroscopy (1H NMR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) were employed to characterize the properties of the polymers. The results showed that CPAM was successfully synthesized and possessed a coarse and porous surface morphology
and inferior thermal stabilities. When the dosage of polymer was 40 mg L–1 and the initial sludge pH value was 7.0, PAD-3 (cationic degree: 40%, molecular weight: 6.89 × 106 Da) showed a more excellent sludge dewatering performance (FCMC: 70.6% SRF: 2.8 ×
1012 m · kg –1; d
50: 436.802 μm, Df
: 1.59). During the sludge flocculation process, three mechanisms containing charge neutralization, patching and bridging co-contributed to a prominent flocculation performance.
研究领域:
环境科学
·
高分子化学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2017
·Vol. 9
·期 6
·988-994
·
IF 1.671
Lan Qian,Tang Shun,Liang Jiyuan,Cheng Qi,Liu Chang,Zhao Jinxing,Cao Yuan-Cheng
This study reported the strength reinforced crosslinked network structure gel polymer electrolyte (GPE) based on the Poly(ethylene oxide) (PEO) using poly diethylene glycol diglycidyl ether. Triethylene tetramine (TETA), tetraethylene pentamine (TEPA) and 1,8-diaminooctane were tried
as the cross linker agents and compared. Results showed that with a 15% content of 1,8-Diaminooctane, the ionic conductivity of the polymer material reached 7.07 × 10–3 S cm–1. The tensile strength of 15 wt% 1,8-diaminooctane GPE membrane increased to
0.45 MPa, and the Young's modulus was calculated to be 11.5 MPa. 1,4-butanediol diglycidyl ether in 5% provided necessary flexibility. Linear Sweep Voltammetry (LSV) indicated electrochemical stability window was 4.8 V. Alternating Current Impedance (AC Impedance) was employed to estimate
the overall performance of electrochemical properties. Results showed the as-prepared gel polymer electrolyte has the prospect of practical application for the Lithium ions batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2018
·Vol. 10
·期 11
·1552-1564
·
IF 1.318
Pan Hui,Li Guang-Long,Wang Xiao-Dong,Wang Shu-Xia,Gong Chun-Hong,Ding Tao
In this study, the spherical silica nanoparticles (denoted as PASP-K-SiO2) were firstly prepared with 3-aminopropyltriethoxy silane (KH550) and polyaspartic acid (PASP) as surface-modifiers by sol–gel method. The PASP-K-SiO2 nanoparticles were well dispersed
in water and combined with waterborne acrylic resin matrix (denoted as PAA) for preparing novel nanocomposite tanning agents (denoted as PASP-K-SiO2/PAA) successfully through a strong mechanical blending. The nanocomposite tanning agents were used to tan pickling white-wet sheepskin
and the tanned leather was characterized by rheological measurements, revealing an increase in the storage modulus and relaxation time of the leather compared to the leather tanned with bare nano-SiO2 and neat PAA. The leather tanned with PASP-K-SiO2 nanoparticles also
exhibits excellent mechanical properties, high thermal stability and chromium absorption rate. Moreover, the shrinkage temperature of the leather tanned with PASP-K-SiO2/PAA and just 0.2% chromium powder based on the sheepskin weight can reach above 80 C, which is potentially advantageous
in completely or partially replacing toxic chromium tanning agents used in traditional leather industry. Compared with the chromium tanning process, the tanning method with the nanocomposites would be regarded as eco-friendly, thus contributing to the reduction of environmental impact.
研究领域:
材料科学
·
皮革化学与工程
·
环境科学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2014
·Vol. 6
·期 3
·577-585
·
IF 2.908
Deng Fang,Li Ke,Luo Xubiao,Luo Shenglian,Zeng Guisheng,Wu Shaolin,Au Chaktong
Inorganic-framework molecularly imprinted TiO2 with molecular recognitive photocatalytic activity was prepared by a facile one-step method using tetrabutyl orthotitanate as titanium source as well as the precursor of functional monomer. Unlike the approach of coating an organic
layer of molecularly imprinted polymer on TiO2, the adopted method for the synthesis of molecularly imprinted TiO2 nanoparticles that are molecular recognitive for the degradation of a target pollutant is simple and direct. Compared to non-imprinted TiO2, the
molecularly imprinted TiO2 shows higher adsorption capacity and molecular recognition towards the template molecules. The photocatalytic activity of molecularly imprinted TiO2 towards the target molecules is more than two times that of non-imprinted TiO2, a
result of selective adsorption of target molecules on molecularly imprinted TiO2. The enhancement in terms of adsorption capacity and molecular recognition can be attributed to the chemical interaction between the target molecules and imprinted cavities, as well as to the geometric
matching between imprinted cavities and target molecules. Moreover, the molecularly imprinted TiO2 exhibits excellent regeneration ability.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2019
·Vol. 11
·期 12
·1764-1772
·
IF 1.158
An Ji-Bin,Hu Dai-Peng,Li Yan-Lin,Chen Na-Li
The Magnetic photocatalytic cobalt ferrite/graphitic-carbon nitride (CoFe2O4/g-C3N4) composites with enhanced photocatalytic activity were successfully fabricated through a simple calcination method. Scanning electron microscopy, powder X-ray
diffraction, and infrared spectroscopy were applied to characterize the samples. The photocatalytic behavior of CoFe2O4/g-C3N4 was assessed by degradation of atrazine in photo Fenton-like system under visible light irradiation. The results showed
that CoFe2O4/g-C3N4 with 2.0 gL–1 catalyst loading in the presence of 1 mM peroxymonosulfate (PMS) exhibited the best catalytic performance, and more than 97% of atrazine was destructed in 12 min. This enhancement could be attributed
to the synergistic effect between CoFe2O4 and g-C3N4 promoting longer lifetime of separated electron–hole pairs derived from the formation of the heterojunction between CoFe2O4 and g-C3N4. This could
enhance the composite-mediated activation of PMS for the visible-light driven degradation of atrazine. Moreover, the quenching tests showed that sulfate radicals were responsible for the atrazine degradation. CoFe2O4/g-C3N4 composites have strong
magnetic ability, thus their recovery from water could be readily achieved by applying external magnetic field. This study demonstrates reasonable performance of the PMS/CoFe2O4/g-C3N4 system in water matrix as potentially important candidate for
environmental remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2022
·Vol. 14
·期 5
·927-933
·
IF 1.067
Zhou Shuwen,Wang Qing,Chen Jun,Shen Yue,Liu Li,Wang Cheng
Manganese dioxide (MnO2) is one of the commonly applied inorganic material which is gaining increasing attentions in recent years. However, preparation and optimization of MnO2 nanoparticles have rarely been studied by previous studies, making the mechanisms responsible
for preparation of MnO2 remaining largely unknown. Here in this study, we synthesized MnO2 through reduction of potassium permanganate (KMnO4) using different reductants, including protein, polymers and small molecule organic acids. It was suggested that, stable
MnO2 nanoparticles can only be obtained in balanced synthesis/stabilization process which requires the reductant to have proper reducibility and stabilization ability at the right charge ratios. Our results concluded that, among these materials, polyvinylpyrrolidone (PVP) K30 showed
the best performance at the charge ratio of 8/3 (w/w, PVP K30 to KMnO4, under given reaction conditions, which resulted in nanoparticles (hydrodynamic size: 79.72±31.53) with high stability and well dispersity, which was then selected as the optimal formulation.
研究领域:
材料科学
·
化学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2020
·Vol. 12
·期 7
·950-957
·
IF 1.117
Lin Guangyi,Wang Jia,Lv Ningning,Wang Honghao,Wang Hong,Yu Boquan,Liu Shouyi,Liang Dong,Wang Quanjie,Yu Kaiben
In order to strengthen and toughen poly(lactic acid) (PLA), poly(ɛ-caprolactone) (PCL), tributyl citrate (TBC) plasticizer and sodium dodecylbenzene sulfonate (SDBS) modified multi-walled carbon nanotubes (s-MWCNTs) were melt compounded with PLA materials for the first time. The
effect of s-MWCNTs on the morphology, as well as mechanical and thermal properties of PLA/PCL blends (containing 8 wt% TBC) was investigated. By co- additions of PCL, TBC, and s-MWCNTs at an optimized composition (containing 10 phr∼PCL, 8 phr∼TBC, 3 phr∼s-MWCNTs (phr∼parts
per hundred)), simultaneously strengthening and toughening of PLA could be achieved, where the tensile strength and elongation at break of the nanocomposites were greatly enhanced by 8% and 147.9%, respectively, as compared to the neat PLA. The toughening mechanism was attributed to the synergistic
effect of the flexibility of PCL and plasticizer effect of TBC, and the strengthen mechanism was attributed to the reinforcing effect of s-MWCNTs. In addition, the s-MWCNTs could be served as a nucleation agent and promote the growth rate of PLA crystallization. Overall, we proposed a simple
and effective method to fabricate high-performance PLA materials with balanced mechanical properties.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2016
·Vol. 8
·期 5
·1045-1052
·
IF 1.812
Liu Yuangang,Sun Qingqing,Wang Shibin,Long Ruimin,Fan Jingqian,Chen Aizheng,Wu Wenguo
Silk fibroin (SF), with the excellent biocompatibility, was combined with poly(lactic-co-glycolic acid) (PLGA) to produce scaffolds with the ability to mimic the extracellular matrix (ECM). In this work, scaffolds with different weight ratios of SF/PLGA (8/8, 5/8, 2/8) were prepared
by thermally induced phase separation (TIPS), and their characteristics as wound dressings were investigated. The results of water vapor permeability, water uptake rate and water loss rate showed that the optimal weight ratio of SF/PLGA was 8/8, which could absorb wound skin exudates to prevent
infection and maintain wound humidity. The water vapor transmission rate was 5591.88 ± 56.70 g/m2/day, and the maximum equilibrium water uptake rate was 72.2%. Furthermore, the curcumin release results showed that the scaffolds had sustained release properties, which indicated
that the SF/PLGA scaffold prepared by TIPS could be used in wound dressing with additional functionalities.
研究领域:
生物材料学
·
医学工程
·
组织工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）