BIOSENSORS & BIOELECTRONICS
·
2024
·
IF 10.7
Xu Liang,Chang Liu,Yuecong Hu,Yutong Hua,Junjie Liu,Jintao Deng,Zhiwei Zhu,Yuanhua Shao
Multi-signal-based self-calibrating biosensors have become a research focus due to their superior accuracy and sensitivity in recent years. Herein, the potential-resolved differential ECL immunoassay based on dual co-reactants regulation was developed. Meso-tetra(4-carboxyphenyl)porphyrin (TCPP) functionalized zirconium dioxide (ZrO 2 ) composites (TCPP-ZrO 2 ) was first synthesized using TCPP as the luminophore and ZrO 2 as the enhancer and stabilizer. The organic-inorganic hybrid structure of TCPP-ZrO 2 limits the intramolecular motion of TCPP and accelerates the production of reactive radicals of co-reactants, thus exhibiting excellent ECL intensity and stability. Then, the potential-resolved ECL properties of TCPP-ZrO 2 regulated only by two co-reactants were explored. On this basis, a differential ECL immunosensor was constructed for the sensitive and accurate determination of heart-fatty acid binding protein (hFABP) using 2-(dibutylamino)ethanol modified gold nanoparticles (DBAE@Au) as labels (ECL-1, +1.3 V) and ECL-2 (−1.3 V) triggered by potassium persulfate (K 2 S 2 O 8 ) as the internal reference. In the presence of hFABP, DBAE@Au was captured by the sensing interface to generate ECL-1 and consume K 2 S 2 O 8 , leading to a significant decrease of ECL-2. According to the intensity difference between ECL-2 and ECL-1, the detection of hFABP was achieved with a low detection limit and a wide linear range. The proposed differential ECL immunosensor has been applied in testing human serum samples with satisfactory results, demonstrating its promising applications for clinical diagnosis.
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DOI
PubMed
高影响因子
Science China-Chemistry
·
2016
·Vol. 59
·期 11
·1397-1404
·
IF 2.429
Jia Huizhen,Chen Si,Zhuo Renxi,Feng Jun,Zhang Xianzheng
A polymeric polyethylenimine (PEI)-based prodrug of anticancer doxorubicin (DOX) (PEI-hyd-DOX) was designed by attaching DOX to PEI via an acid-labile hydrazone bond, for the achievement of biocontrollable gene and drug co-delivery in response to the intracellular acid microenvironments in the late endosome/lysosome compartments. The cytotoxicity of PEI-hyd-DOX was evaluated by the MTT assay and the cellular uptake was monitored using confocal laser scanning microscopy. The polymeric prodrug can respond with a high sensitivity to the specific acid condition inside cells, thus permitting the precise biocontrol over intracellular drug liberation with high drug efficacy. The chemical attachment of drug molecules also led to the relatively reduced toxicity and the enhanced transfection efficiency compared with parent PEI. The resulting data adumbrated the potential of PEI-hyd-DOX to co-deliver DOX and therapeutic gene for the combination of chemotherapy and gene therapy.
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ADVANCED FUNCTIONAL MATERIALS
·
2016
·Vol. 26
·期 33
·6025-6032
·
IF 11.382
Yuyang Li,Guanghua Liu,Tengfei Cao,LiMin Liu,Jiangtao Li,Kexin Chen,Laifeng Li,Yemao Han,Min Zhou
Dense bulk samples of (Ag,In)-co-doped Cu 2 SnSe 3 have been prepared by a fast and one-step method of combustion synthesis, and their thermoelectric properties have been investigated from 323 to 823 K. The experimental results show that Ag-doping at Cu site remarkably enhances the Seebeck coefficient, reduces both electrical and thermal conductivities, and finally increases the figure of merit (ZT) value. The ZT of the Cu 1.85 Ag 0.15 SnSe 3 sample reaches 0.80 at 773 K, which is improved by about 70% compared with the unadulterated sample (ZT = 0.46 at 773 K). First principle calculation indicates that Ag-doping changes the electronic structure of Cu 2 SnSe 3 and results in larger effective mass of carriers, thus enhancing the Seebeck coefficient and reducing the electrical conductivity. The low electrical conductivity caused by Ag-doping can be repaired by accompanying In-doping at Sn site, and by (Ag,In)-co-doping the thermoelectric properties are further promoted. The (Ag,In)-co-doped sample of Cu 1.85 Ag 0.15 Sn 0.9 In 0.1 Se 3 shows the maximum ZT of 1.42 at 823 K, which is likely the best result for Cu 2 SnSe 3 -based materials up to now. This work indicates that co-doping may provide an effective solution to optimize the conflicting material properties for increasing ZT.
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Nanomaterials
·
2022
·Vol. 12
·期 18
·3234
·
IF 5.719
Tianen Chen,Allen Yang,Wei Zhang,Jinhui Nie,Tingting Wang,Jianchao Gong,Yuanhao Wang,Yaxiong Ji
Herein, we present an innovative graphene oxide (GO)-induced strategy for synthesizing GO-based metal-organic-framework composites (Co-BTC@GO) for high-performance supercapacitors. 1,3,5-Benzene tricarboxylic acid (BTC) is used as an inexpensive organic ligand for the synthesis of composites. An optimal GO dosage was ascertained by the combined analysis of morphology characterization and electrochemical measurement. The 3D Co-BTC@GO composites display a microsphere morphology similar to that of Co-BTC, indicating the framework effect of Co-BTC on GO dispersion. The Co-BTC@GO composites own a stable interface between the electrolyte and electrodes, as well as a better charge transfer path than pristine GO and Co-BTC. A study was conducted to determine the synergistic effects and electrochemical behavior of GO content on Co-BTC. The highest energy storage performance was achieved for Co-BTC@GO 2 (GO dosage is 0.02 g). The maximum specific capacitance was 1144 F/g at 1 A/g, with an excellent rate capability. After 2000 cycles, Co-BTC@GO 2 maintains outstanding life stability of 88.1%. It is expected that this material will throw light on the development of supercapacitor electrodes that hold good electrochemical properties.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hao Zou,Lei Liao,Gaoling Liang,Wanjiang You,Shilong Song,Ning Pan,Hao Lei,Weimin Li,Xiaoqiang Wang
The silver-based materials are widely used in nuclear fuel reprocessing plant for iodine capture. They are powerful but expensive. In this paper, the mercury-bismuth co-modified silica gel (Hg-Bi-Silica gel) was studied and tried to displace the silver-based materials. Firstly, the Hg-Bi-Silica gel was prepared through activating, impregnating and drying. Mercury and bismuth existed as Hg(OH)NO 3 and [Bi 6 O 5 (OH) 3 ](NO 3 ) 5 ·2H 2 O in Hg-Bi-Silica gel, respectively. Secondly, the iodine adsorption performances of Hg-Bi-Silica gel were investigated. The static trapping capacity of I 2 and CH 3 I was 209.1 ± 1.7 mg/g and 151.0 ± 6.9 mg/g, respectively, which was better than that of the commercial silver-based materials (148.6 ± 3.5 mg/g and 132.7 ± 3.0 mg/g). The dynamic adsorption efficiency of CH 3 131/127 I was 99.996 %, which was closed to that of the commercial silver-based materials (99.990 %). Thirdly, the possible mechanism for iodine capture in the Hg-Bi-Silica gel system was proposed. I 2 was captured by Hg-Bi-Silica gel mainly in the form of HgI 2 and Hg(IO 3 ) 2 , however, CH 3 I was captured by Hg-Bi-Silica gel mainly in the form of HgI 2 . Furthermore, [Bi 6 O 5 (OH) 3 ](NO 3 ) 5 ·2H 2 O was cooperated with Hg(OH)NO 3 on capturing iodine. Finally, the stabilities of Hg-Bi-Silica gel were evaluated. The Hg-Bi-Silica gel showed excellent thermal stability, NO x -corrosion resistance and irradiation resistance. In summary, the more cost-effective Hg-Bi-Silica gel was a potential effective substitution of silver-based materials.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Pengxi Li,Wangjing Zhai,Bingxue Li,Qiqi Guo,Yujue Wang,Yucheng Gu,Li Zheng,Fanrong Zhao,Xueke Liu,Peng Wang,Donghui Liu
Glyphosate, the most widely utilized herbicide, frequently coexists with nitrogen fertilizers such as urea in soil environments. Nitrogen cycling is a key process for maintaining soil ecological functions and nutrient balance. However, the effects of co-exposure to glyphosate and urea on this process have remained unclear. This study investigated the impact of co-exposure to glyphosate (10 mg/kg) and urea (260.87 or 347.83 mg/kg, equivalent to 180 or 240 kg N/ha) on soil nitrogen cycling through a 98-day incubation experiment. Soil nutrients, enzyme activities, bacterial community structure, and functional genes were analyzed. NH 4 + -N and NO 3 - -N contents significantly decreased by 44.70–53.43 % and 36.74–49.12 %, respectively. Co-exposure reduced bacterial diversity and altered nitrogen cycling genes, decreasing nifH while increasing amoA and nosZ , indicating reduced nitrogen input potential and increased inorganic nitrogen loss. Enzyme analysis confirmed excessive activation of nitrification and denitrification, lowering nitrogen availability. Partial least squares structural equation modeling (PLS-SEM) showed co-exposure indirectly decreased NH 4 + -N and NO 3 - -N via enhanced nitrate and nitrite reductase activities. The study highlights the complex interactions between herbicides and fertilizers in soil environments and underscores the need for further research to understand the implications for wider soil health and crop production in agriculture systems.
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DOI
PubMed
高影响因子
JOURNAL OF CATALYSIS
·
2020
·
IF 7.888
Jian Zhang,Yazhe Zhang,Jieqiong Zhao,Zhe An,Yanru Zhu,Xin Shu,Hongyan Song,Xu Xiang,Xiaodan Ma,Jing He
Oxidative carbonylation has attracted broad interest from both academia and industry in recent years. Oxycarbonylation of ethanol to diethyl carbonate (DEC) has been of great challenge due to the difficulty in the simultaneous activation of ethanol and CO. This work reports a heterogeneous Cu-Pd pair catalysis for simultaneous activation of ethanol and CO, affording a selectivity of 85.4% to DEC and a space–time yield (STY) of up to 207 mg∙g −1 ∙h −1 . Well distributed Cu-Pd pair affords more Cu (I) sites, promoting CO activation and the followed insertion to adsorbed ethanol. Further increasing ratio of Cu (I) species via the pre-treatment of catalyst with CO and ethanol promotes simultaneously the activation of ethanol and CO, affording a STY of 325 mg∙g −1 ∙h −1 of DEC.
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高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Anni Li,Congwei Wang,Huinian Zhang,Zheng Zhao,Jie Wang,Miao Cheng,Huifang Zhao,Junying Wang,Minghong Wu,Junzhong Wang
Electrochemical water splitting by a robust electrocatalyst plays a key role in hydrogen production for clean and sustainable energy. In this work, a kind of nanohybrid of graphene supported atomic Co and nanocrystalline Co 3 O 4 was synthesized through electrochemical synthesis of atomic cobalt onto graphene using 1-Butyl-3-methylimidzolium tetrachlorocobalt [(BMIm) 2 CoCl 4 ] as an electrolyte. By virtue of the synergistic effect of single-cobalt atoms and Co 3 O 4 nanoparticles , the nanohybrid presents enhanced electrocatalytic performance toward the oxygen evolution reaction. The low onset potential is 0.49 V (vs. Ag/AgCl) and the overpotential of the current density of 10 mA cm −2 is 0.30 V in aqueous solution, which is comparable to commercial RuO 2 . Moreover, the nanohybrid exhibits remarkably long stability for over 45 h at a fixed potential of 0.6 V.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Danning He,Zhongyang Wang,Shuangqian Ma,Lan Yang,Liping Tong,Xiao Zhou,Tongxiang Fan
Broadband absorber materials with high solar absorptivity and infrared emissivity are conducive to high-efficient and cost-effective heating technology in the civil and industrial field. The BaTi 1- x Co x O 3 ceramics are prepared by sol-gel method, showing mixed tetragonal/hexagonal phases. Co doping slightly reduces the phase transition temperature of BaTiO 3 . Meanwhile, BaTi 1- x Co x O 3 ceramics present a composite Mott/charge transform band nature and the Co-3d impurity level and oxygen vacancies level lead to a narrowed bandgap. The enhancement of the absorption induced by free carriers, impurity level and lattice vibration promote the UV-Vis-NIR absorption and mid-infrared radiation of BaTi 1- x Co x O 3 ceramics. In conclusion, the optimized BaTi 0.95 Co 0.05 O 3 ceramic achieves a high solar absorptivity (0.88) in 0.25–2.5 µm and a high infrared emissivity (0.83) in 8–14 µm. The radiative performance presents good temperature stability, unaffected by phase structure and lattice thermal expansion, which provides prospective applications in solar energy conversion and infrared radiation heating.
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高影响因子
ChemNanoMat
·
2021
·Vol. 7
·期 8
·906-909
·
IF 3.154
Jin Yu,Yang Cao,Qian Liu,Yonglan Luo,Yang Liu,Xifeng Shi,Abdullah M. Asiri,Tingshuai Li,Xuping Sun
It's highly desirable to devise and develop non-precious metal catalysts for efficient water oxidation catalysis in alkaline solution. Herein, we report Co-MOF nanosheet arrays grown on the three dimensional conductive nickel foam (Co-MOF/NF) through a hydro-thermal process for efficient alkaline oxygen evolution electrocatalysis. Such catalyst displays an excellent electrochemical performance by achieving an overpotential of 290 mV at 20 mA cm −2 in 1.0 M KOH. Besides, it possesses both a good electrochemical stability and a high turnover frequency of 0.14 s −1 at the overpotential of 400 mV.
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高影响因子
Materials Research Express
·
2021
·Vol. 8
·期 2
·025001
·
IF 1.62
Zeyang Luo,Huan Wang,Yuxin Ma,Guodong Zhang,Duanting Yan,Xinyu Bai,Dejun Wang,Runru Liu
In this study, a promising electrolyte material Bi0.76Lu0.16Ti0.08O1.5+δ (abbreviated as '8T16LSB') with high oxygen ion conductivity was obtained by co-doping with Lu2O3 and TiO2 into Bi2O3. The phase composition, microstructure, and conductivity of TLSB ceramics were respectively investigated by x-ray diffraction, scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). XRD results exhibited that the sintered TLSB ceramics with an unchanged total doping concentration of 24 mol.% existed as a cubic fluorite structure. SEM results showed that the TLSB pellets were relatively dense. The relationship between temperature and conductivity showed that the 8T16LSB ceramic exhibited the highest conductivity of 0.56 S cm−1 at 700 °C, which was higher than the value of 0.37 S cm−1 for the representative single-doping Er0.4Bi1.6O3 (abbreviated as '20ESB'). The results certified that the electrochemical performance of Bi2O3 was promoted by the co-dopant of Lu3+and Ti4+.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Xu Ouyang,Lan Zhou,Xinliang Xu,Zhangyan Yang,Lei Wang,Lizhe Lu,Guojin Liu,Guoqing Zhang
In order to improve the encapsulation efficiency and shell properties of PMMA capsules, poly(MMA-co-TMPTA)/fragrance microcapsules were fabricated by in-situ polymerization with Trimethylolpropane Triacrylate (TMPTA) as the co-monomer. The poly (MMA-co-TMPTA)/fragrance microcapsules were characterized by scanning electron microscopy (SEM), thermogravimetric analyzer (TGA), pyrolysis gas chromatography-mass spectrometer (PGC-MS) and electronic nose (PEN-3). The results indicate that the poly(MMA-co-TMPTA)/fragrance microcapsules present pomegranate shape with rough and sunk surface and have the particle size in the range of 10−20 μm. poly(MMA-co-TMPTA)/fragrance microcapsules has good thermal stability, high encapsulation efficiency of 91.6 % and good slow-release property, and the fragrance on the fabric can be retained for more than 3 months.
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