CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Juan Wang,Xiaoyu Wang,Qianlong Fu,Jinxiu Fu,Fengrui Zhai,Shuang Li
Silicon carbide ceramic membranes have been widely used in the treatment of various corrosive and high temperature wastewaters. However, SiC is a compound with strong covalent bond , thus the sintering temperature and then the energy consumption during sintering of SiC ceramics is high, which inhibits the scale-up manufacturing of SiC ceramic membranes . Here, a silicon carbide ceramic membrane support was prepared at 800 °C with a low melting-point glaze as the sintering aid. The glaze infiltrated the SiC skeleton during sintering, and gave rise to high fracture strength of the porous ceramics . With the content increase of sintering aid from 10 wt% to 30 wt%, the pore-formation mechanism of the ceramic membrane support transformed from SiC particles packing to SiC aggregations packing, leading to the increase in pore size and decrease in porosity. The permeance and selectivity of the support was investigated via pure-water and oil-in-water emulsion tests. Due to the high hydrophilicity, the pure-water flux increased from 32 L/(m 2 ·h) to 87 L/(m 2 ·h) while the oil rejection decreased from 99.0% to 93.1% with the increase of trans -membrane pressure. This work provides a feasible route for the preparation of SiC porous ceramics with low energy consumption.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 75
·61161-61169
·
IF 3.84
Kai Zhang,Wenyue Zou,Hongyan Zhao,Pierre Dramou,Chuong Pham-Huy,Jia He,Hua He
A novel magnetic molecularly imprinted polymer (MMIP) has been designed using flexible docking and molecular dynamics in computer simulation. Six kinds of representative functional monomers have been screened to obtain the optimal one, as well as optimizing its ratio to the template amlodipine (AML). Two MMIPs have been prepared with the most suitable functional monomer methacrylic acid (MAA) along with acrylamide (AM) as a comparison, in the ratio of 4 to AML. Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), and vibrating sample magnetometery (VSM) were used to characterize the structure, morphology and magnetic properties of the MMIPs. A static adsorption study was carried out with the help of response surface methodology (RSM) and in addition, adsorption kinetics and isotherms were studied to further explain the adsorption behavior. Three dihydropyridine calcium channel blockers (DHP-CCBs) as structural analogues and non-structural analogue penicillin V potassium were chosen for the selectivity study. The results showed that MMIP using MAA as functional monomer had a large adsorption capacity (53.77 μg mg−1) as well as a large imprinting factor (more than 2) and the adsorption behavior was in accordance with a pseudo-second-order model and Freundlich isotherm model. Due to the excellent properties of the polymer: good magnetic properties, large adsorption capacity and great selectivity for DHP-CCBs, a magnetic molecularly imprinted solid phase extraction with ultraviolet detection (M-MISPE-UV) method had been established, validated and applied to the analysis of AML in urine sample.
研究领域:
材料科学
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药物分析
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计算化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Jun Luo,Jixiang Zhang,Ao Wang,Yanya Liu,Jinglan Cheng,Yunkun Zhao,Dong Yan,Lichao Jia,Jian Li
Two BaZr 0.1 Ce 0.7 Y 0.2 O 3-δ (BZCY) powders prepared by solid-state reaction (BZCY(sr)) and sol-gel (BZCY(sg)) methods and three NiO powders (two commercial NiO with large (NiO(L)) and small (NiO(S)) particles and one prepared by solution-infiltration method (NiO(I)) are used to study the effect of the particle sizes of BZCY powder and NiO sintering aid on the sinterability and conductivity of sintered BZCY electrolytes for protonic ceramic fuel cells (PCFCs). The BZCY and NiO powders are examined by X-ray diffraction and scanning electron microscopy (SEM). The microstructures of the six BZCY-NiO mixtures sintered at 1500 °C in air for 6 h, named as sr-L, sr-S, sr-I, sg-L, sg-S, and sg-I, are characterized by SEM to compare their pore morphology and grain size , and their conductivities from 550 to 800 °C in a 5 vol% H 2 –N 2 atmosphere are measured using the four-probe and impedance spectroscopy methods, respectively. The results show that sr-L and sg-L are not fully dense with large pores, most of them are at the grain boundaries; sr-S and sg-S have a much denser microstructure; sr-I and sg-I have the highest density with fine pores. The average grain size , the conductivity, and the grain-boundary resistance follow the orders of sr-L (8.16 μm) ≈ sg-L (8.53 μm) < sr-S (10.59 μm) ≈ sg-I (10.65 μm) < sg-S (14.07 μm) < sg-I (26.08 μm), sr-L < sg-L < sr-S < sg-S ≈ sr-I < sg-I, and sr-L > sg-L > sr-S > sg-S ≈ sr-I > sg-I, respectively. The above results indicate that both the density and grain size affect the conductivity critically, and sg-I with the small-particle BZCY and fine and uniformly distributed NiO sintering aid has the highest sintered density and the biggest grains (fewest grain boundaries) and in turn the highest conductivity (0.039 S cm −1 at 800 °C). A cell with the sg-I electrolyte demonstrates electrochemical performance 1.8 times higher than that with the sr-L electrolyte.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Jiahui Jiao,Qiang Li,Yiheng Gu,Yali Luo,Lin Ge,Yifeng Zheng,Han Chen,Lucun Guo
Yttrium-doped barium zirconate (BZY) has been extensively studied as a promising electrolyte material for protonic ceramic fuel cells . However, inferior sinterability is a major barrier in BZY development. In our research, the effect of BaO B 2 O 3 composite sintering aid on the sintering behavior and electrical property of BaZr 0.85 Y 0.15 O 3- δ (BZY15) are examined. BaO B 2 O 3 addition reduces the sintering temperature of BZY15 by approximately 200 °C via the liquid-phase sintering mechanism. The corresponding bulk and grain boundary conductivities are prominently improved (<3 wt% BaO B 2 O 3 addition), whereas the further addition of sintering aid decreases the grain boundary conductivity. Notably, the scanning electron microscope (SEM) and electrochemical impedance spectroscopy (EIS) analyses suggest that the enhanced conductivity may be related to the temperature dependence of Ba evaporation.
研究领域:
材料科学
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能源工程
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DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
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2018
·Vol. 87
·期 2
·486-495
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IF 1.745
Zhang Xiaokang,Zhang Rui,Jin Shuangling,Hu Zhen,Liu Yan,Jin Minglin
Alumina aerogels are prepared from the cheap AlCl 3 ·6H 2 O precursor by the sol-gel method using acetoacetic-grafted polyvinyl alcohol (acac-PVA) as a template and dispersing agent, and propylene oxide as a gelation initiator. The acac-PVA has a high dispersing ability for Al 3+ ion through complexation interaction and increases the content of AlCl 3 ·6H 2 O in sols to as high as 37 wt%, leading to the formation of wet gels without precipitate and crack, and little shrinkage. As-prepared alumina aerogels have high density, high mechanical strength, high mesoporosity, and high-surface area. The shrinkage in supercritical drying processes is greatly reduced. The specific surface area increases and pore size decreases with increasing the content of the acac-PVA in sols. The acac-PVA also acts as a template that provides nucleation sites for boehmite AlOOH particles and inhibits their growth. An excess content of the acac-PVA isolates secondary particles, weakens the interaction between them, and therefore decreases the Young’s modulus. Coarsening is not alleviated obviously after removal of the acac-PVA by high-temperature treatment in air, and the fine primary particles grow into nanorods with diameters of 10–20 nm and lengths of 30–70 nm.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2013
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IF 1.977
Ruiling Sun,Yong Wang,Yongnian Ni,Serge Kokot
A simple, inexpensive and sensitive kinetic spectrophotometric method was developed for the simultaneous determination of three anti-carcinogenic flavonoids: catechin, quercetin and naringenin, in fruit samples. A yellow chelate product was produced in the presence neocuproine and Cu(I) – a reduction product of the reaction between the flavonoids with Cu(II), and this enabled the quantitative measurements with UV–vis spectrophotometry. The overlapping spectra obtained, were resolved with chemometrics calibration models, and the best performing method was the fast independent component analysis (fast-ICA/PCR (Principal component regression)); the limits of detection were 0.075, 0.057 and 0.063 mg L −1 for catechin, quercetin and naringenin, respectively. The novel method was found to outperform significantly the common HPLC procedure.
研究领域:
分析化学
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食品科学
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植物化学
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2022
·Vol. 30
·期 1
·509-524
·
IF 6.123
Liu Yali,Zhang Sufeng,Hua Chen,Li Nan,Li Lei
Technological advancements in flexible and wearable electronics have driven a boom in high-performance flexible electrodes. In this study, a simple and low-cost bio-inspired filter paper (FP) template method using the interfacial-aided polyethyleneimine-functionalized filter paper (FP-PEI) was developed to fabricate highly flexible silver-based conductive films. The FP was modified through amination to obtain FP-PEI with the rigid cellulose backbone and the flexible side chain of grafted amino groups, which played a key role as an interfacial layer during the chemical deposition of fractal-structured silver particles (FSSPs). The naturally porous and rough network structures of FP templates provided structural support and network for the deposition of conductive materials. In addition, the high porosity of FP facilitated the effective transfer of electrons, and its nano- or micro-scale rough surface structure promoted the formation of strong adhesion between the cellulose substrate and the conductive layer, which was crucial for the conductive stability of the device. The obtained conductive films (FP-PEI/FSSPs) exhibited a low sheet resistance of 1.47 Ω sq −1 , a conductivity of 3401 S m −1 , and good mechanical properties with a stress strength of 6.17 MPa. Moreover, FP-PEI/FSSPs exhibited a stable electrical conductivity (the sheet resistance only increased by 0.06 Ω sq –1 through 500 bending cycles), thermal stability (the maximum thermal decomposition rate increased from 349.3 to 357.8 °C), and oxidation resistance (the sheet resistance increased by only 0.04 Ω sq –1 after FP was exposed to the air for 15 days). The results indicate that FP-PEI/FSSP conductive films can be a potential green flexible electronic material. Graphical abstract
研究领域:
柔性电子
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材料科学
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纳米技术
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导电材料
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Mengna Dong,Xinyu Sun,Lihua Li,Kunyi He,Jiao Wang,Hui Zhang,Li Wang
Early diagnosis of bacterial infection and tracking of treatment effect are of great importance for developing a “sense-and-treat” integrated system. Herein, we developed a bacteria-triggered, portable, wearable and colorimetric film-based band-aid (FBA) for closed-loop monitoring and light-controlled therapy of wound infection. FBA with high photothermal conversion efficiency of 52.56% was prepared by wrapping Bi 2 S 3 nanoflowers (BS NFs) loaded with rhodium nanoparticles (Rh NPs) and bromothymol blue (BTB) into LB agar film, integrating bacteria-triggered color change, photothermal/photodynamic therapy (PTT/PDT) synergistic bactericidal therapy and agar-based band aid in one intelligent system. Initially, FBA effectively simulates the pH sensing mechanism, and monitors the occurrence of bacterial infections within 5 min through color changes of Staphylococcus aureus ( S. aureus ) from blue to yellow and Escherichia coli ( E. coli ) from yellow to blue. Additionally, the short-term and controlled antibacterial strategy of “one light dual-mode responses” (photothermal and photodynamic responses) was implemented with the introduce of near-infrared (NIR). Ultimately, the effectiveness of FBA was fully validated in the monitoring and treating of S. aureus -infected mouse wounds. Notably, the designed FBA decisively abandoned off-target side effects maximizing the treatment effect and nakedly tracking therapeutic situation in real time, contributing an effective antibacterial alternative strategy for reducing the use of antibiotics. To the best of our knowledge, such integrated system is still unreported on film-fixed model. In view of the advantages of the low cost and convenience of the simple device, the integrated design is expected to provide a solution for the development of a closed-loop biomedical system combining diagnosis and treatment.
研究领域:
生物医学工程
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材料科学
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纳米技术
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伤口护理
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传染病
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2016
·
IF 3.15
Qiang Zhao,Dandan Li,Guofeng Gao,Wen Yuan,Genyan Hao,Jinping Li
We describe the preparation of three partially ordered iron-based catalyst films (Fe-OAc, Fe-Pro, Fe-But) with nanoporous structure by electrodeposition from organate electrolytes containing Fe 2+ . The anions of the organic acids assisted the partial ordering of the nanostructured Fe(III) catalysts for water oxidation. A model involving an electrical double layer is invoked to explain the role of the organate electrolyte system in their formation. Analytical results have revealed the main component of the iron-based films to be a β-FeOOH structure. The Fe-But catalyst catalyzed water oxidation in 0.1 m potassium carbonate solution with an average activity of 1.48 mA cm −2 and an overpotential of 433 mV.
研究领域:
无机化学
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材料科学
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电化学
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催化化学
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能源材料
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纳米科技
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Meng Jin,Hui Pan,Ge Gao,Mengping Zhang,Haiyan Wei,Xiao Meng,Wenwen Chen,Xinya Zhang,Ming Shang,Cuijuan Wang
Public concern regarding mixed pesticide poisoning involving chlorfenapyr has highlighted the urgent need for effective point-of-care diagnostics (POCD) to facilitate timely clinical rescue. This study presents a novel surface-enhanced Raman scattering (SERS)-based microdevice for the rapid identification and quantification of chlorfenapyr, lufenuron, and emamectin benzoate in human serum and urine for first aid scenarios. We developed a multifunctional sensor utilizing a porous cellulose ester (MCE) membrane modified with zeolitic imidazole framework-67 (ZIF-67) and gold concave rhombic dodecahedra (Au CRDs), creating an Au CRDs@ZIF-67/MCE composite that serves as both a SERS-active substrate and a sorbent. Assembled in a 24-well plate, this microdevice enhances enrichment selectivity and efficiency through a “1+1 dual-mode separation” effect, while the concave sharp tips of Au CRDs significantly boost SERS sensitivity. The correlation between SERS intensity and logarithmic concentration yielded R-values between 0.911 and 0.986, with detection limits from 0.16 ppb to 2.71 ppb, demonstrating clinical applicability. This microdevice analyzed patient bio-samples in 5 min, demonstrating both practicality and accuracy, as results closely aligned with those obtained from routine chromatography. Importantly, the detection process requires no sample preparation, underscoring its potential as a high-efficiency, user-friendly POCD assay for multi-pesticide poisoning in first aid scenarios.
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DOI
高影响因子
JOURNAL OF CONTROLLED RELEASE
·
2025
·
IF 11.5
Anqi Ye,Hao Mei,Zheng Zhang,Fuqiang Song,Linyuan Jiang,Ting Huang,Ping Li,Siting Du,Yanzhen Feng,Tianyao Jiang,Fenzan Wu,Li Cheng,Jia Qu,Jian Xiao
Severe corneal injuries can cause visual impairment even blindness. Surgically stitching or implanting biomaterials have been developed, but their implementation requires professional surgeons, failing to address the immediate need of medical treatment. The pressing challenge lies in developing multifunctional biomaterials that enable self-management of corneal injuries. This study introduces collagen-based hydrogels that can be used as contact lenses, incorporating macromolecular collagen into common polymer materials via a dual-step orthogonal cross-linking process. This method ensures superior optical and mechanical performance while preserving the bioactivity and structural stability of the incorporated materials. Specialized contact lens facilitates the controlled release of labile protein therapeutics such as acidic fibroblast growth factor (aFGF), eliminating the need for stabilizers like heparin. This capability allows the lens to deliver a wide range of labile proteins, thus expanding its therapeutic use across various ophthalmic and potentially other medical conditions. The lens's anti-inflammatory and anti-fibrotic properties effectively treat corneal alkali burn. Termed ‘corneal first-aids lens’, it can provide postoperative clinical care and serve as a viable and safe therapeutic alternative for patients with limited medical access.
研究领域:
生物医学工程
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眼科
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiangxing Xu,Xianzhou Ning,Faqin Dong,Xiaoyong Yang,Wei Zhang,Bin Ye,Zhiguo Yang,Guoqiang Zhao,Chuan Zeng,Yushan Yang
In this paper, we present a productive low-temperature fabrication of Cs-hollandite ceramics by adding Bi 2 O 3 as a sintering aid to achieve high cesium retention. The effects of Bi 2 O 3 addition on the phase composition, crystal structure and aqueous stability of the stoichiometric Ba 0.9 Cs 0.3 Cr 2.1 Ti 5.9 O 16 ceramic waste form were investigated. It was found that adding Bi 2 O 3 can effectively reduce the sintering temperature and promote densification of Cs-containing hollandite products. The Cs-hollandite ceramic with 2 wt% Bi 2 O 3 sintered at 1000 °C showed a single phase with > 98 % cesium retention, which was ∼ 200 °C lower and ∼ 11 % retention rate higher than those of reported Cs-bearing hollandite. Moreover, the leached sample remained stable tetragonal structure, the LR Cs was in the order of 10 -3 g·m - 2 ·d -1 after 28 days and the leaching indexes > 8, exhibiting good aqueous stability. This route can be considered as a promising solution to prevent cesium loss for incorporating the cesium waste in ceramic hosts.
研究领域:
材料科学
·
核废料管理
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）