JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
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2022
·Vol. 103
·期 3
·799-806
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IF 2.606
Wang Haishan,Ling Fuxin,Li Yule,Wu Dingzhang,Qi Longfei,Liang Zhaowei,Chen Qingming,Zhang Hui
La 0.825 Sr 0.175 Mn 1− x V x O 3 ( x = 0.00–0.05) ceramics were prepared by sol–gel method. X-ray diffraction analysis illustrates that all samples are perovskite structure, no impurity phases were detected. SEM shows that the grains are closely connected. With increasing V doping level, the grain size decreased from 27.78 μm ( x = 0.00) to 11.23 μm ( x = 0.05), which results into the enhancement of grain boundary effect. The temperature dependence of resistivity shows that all samples exhibit typical insulator-metal transition. With V doping up to 0.01, temperature coefficient of resistivity ( TCR ) increases from 4.65% K −1 to 6.1% K −1 , and the magnetoresistance ( MR ) value reaches 38.629%. The electrical and the magnetic properties of V-doped La 0.825 Sr 0.175 MnO 3 present a complicated behavior with further doping of V. These findings indicate that the properties of manganites can be effectively and dramatically tailored by doping of Mn, which meantime facilitate the application of manganites in infrared detector and magnetic sensors.
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APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
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2022
·Vol. 194
·期 11
·5220-5235
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IF 3.094
Qiu Weihua,Liu Jinru
Bio-depolymerized the lignin macromolecules into low molecular lignin-derived aromatic compounds satisfies the requirement for carbon dioxide peaking and is also one of the important ways to realize lignin valorization. Coriolopsis trogii is a kind of less reported lignin-degrading white-rot fungus. The degradability of a self-isolated C. trogii TS01 on industrial lignins, including enzymatic hydrolysis lignin (EHL) and Kraft lignin (KL), was investigated in this paper. The results indicated that EHL could be used as an efficient carbon source to promote the cell growth and ligninolytic enzyme secretion of C. trogii TS01. Compared with using 2% glucose as carbon source, 1% EHL plus 1% glucose would increase the maximum cell dry weight, laccase activity, and manganese-dependent peroxidase activity of C. trogii TS01 by 24.8%, 164.1%, and 200%, respectively. However, the cell growth and ligninolytic enzyme secretion would be significantly inhibited in the case of 1% KL plus 1% glucose used as carbon source. As a result, at the 12th day of fermentation, the degradation rates of EHL and KL were 50.6% and 5.7%, respectively. The UV and FTIR analysis indicated that after been fermented by C. trogii TS01, S-unit content in EHL was decreased by 12.5% but G-unit content was increased by 53.7%. In conclusion, the research of this paper will provide a promising solution for the valorization of enzymatic hydrolysis lignin since the high biodegradation rate of lignin and high activity of ligninolytic enzymes could be achieved simultaneously.
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高影响因子
Journal of Sustainable Metallurgy
·
2022
·Vol. 8
·期 3
·1117-1129
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IF 3.068
Lu Xingwen,Zhou Ceng,Liu Yuxin,Wang Yujie,Wang Fei
In this study, iron tailings were used as raw materials mixing with Al 2 O 3 , SiO 2 , and/or CaO sintered at 950–1400 °C to produce glass ceramics. In Al 2 O 3 /tailing and Al 2 O 3 /SiO 2 /tailing systems, the newly formed crystalline mullite (3Al 2 O 3 ·2SiO 2 ) reached its maximum content of 83.7 wt% for sample with Al 2 O 3 /SiO 2 /tailing mass ratio of 6/2/2. In Al 2 O 3 /SiO 2 /CaO/tailing system, the content of newly formed anorthite (CaAl 2 Si 2 O 8 ) increased to the maximum of 72.9 wt% for sample with Al 2 O 3 /SiO 2 /CaO/tailing mass ratio of 7/8/4/6 sintered at 1450 °C. The properties of glass ceramic products were significantly improved in samples with high content of crystalline mullite or anorthite and low surface porosity. Obtained glass ceramic in Al 2 O 3 /SiO 2 /tailing system with mass ratio of 6/2/6 showed excellent properties of chemical resistance (99.99%), compressive strength (1061.6 MPa), and low water absorption (0.2%). The high performance of glass ceramics and low leachability of hazardous metals shed light on the potential application of iron tailings in building and decorative materials. Graphical Abstract
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CELLULOSE
·
2022
·Vol. 29
·期 10
·5511-5527
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IF 6.123
Zhang Shuaifeng,Gu Jun,Fan Baochao,Li Li,Li Bin
We report a new method for treating high-molecular-weight cellulose with 60 Co gamma rays to simultaneously graft functional groups onto the natural polymer and promote its solubility. After exposing cellulose to a 40-kilogray dose of gamma rays in the presence of 2-methylacrylamide, numerous amide groups were grafted onto the cellulose chain and its solubility increased. Amide-functionalized cryogels were prepared via the sol–gel method using the irradiated product as a raw material. Compared with 40-kGy-irradiated high-molecular-weight-cellulose cryogel, the amide-functionalized cryogels had relatively high zero-point charge pH values and excellent adsorption capacities with regard to anionic dyes over the pH range 2–10. They were also stable in terms of reusability. Therefore, the 2-methylacrylamide/high-molecular-weight cellulose cryogel has great potential for use in the treatment of colored surface wastewater. The 60 Co gamma ray irradiation technique described herein is a stable and highly efficient method for the preparation of functionalized cellulose products. Graphical abstract
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Food Analytical Methods
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2022
·Vol. 16
·期 1
·55-62
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IF 3.498
Li Jiale,Li Haoyang,Pei Shizeng,Kang Na,Zhang Guomei,Zhang Caihong,Shuang Shaomin
In this work, a new dye (DAC-CPO) with typical donor-π-acceptor (D-π-A) structure was designed, which could enter the IB subdomain of human serum albumin (HSA) and form the host–guest supramolecular system. Formation of the HSA/DAC-CPO complex was confirmed by the competitive displacement experiments and the molecular-docking study. DAC-CPO alone had no response to sulfur dioxide (SO 2 ), while the HSA/DAC-CPO complex displayed an obvious increased fluorescence response and remarkable blue-shifted emission to SO 2 . The sensitive detection method of SO 2 in aqueous solution was developed with the linear range of 0.5 ~ 4.0 μM. Spectrum data of polarity and viscosity showed that formation of the complex hindered the internal charge-transfer (ICT) process and restricted the rotation of the dye, resulting in the speed increase of reaction between the dye and SO 2 . In addition, the HSA/DAC-CPO complex had also been successfully used for rapid detection of SO 2 in actual samples.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 26
·20981-20991
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IF 2.779
Yan Gui-wei,Liu Qing-qing,Fang Bi-jun,Chen Zhi-hui
Mg doped (Ba 0.98 Li 0.02 )TiO 3 energy storage ceramics with antiferroelectric-like double hysteresis loops were prepared using solid-state reaction method. XRD patterns indicated that tetragonal phase structure of the pure (Ba 0.98 Li 0.02 )TiO 3 ceramic was destroyed and the orthorhombic phase structure appeared with Mg doping. The ratio of orthorhombic/tetragonal phase increased with Mg content increasing, and the value of polarization was in direct proportion to the ratio of orthorhombic/tetragonal phase. The breakdown strength of (Ba 0.98 Li 0.02 )(Mg x Ti 1− x )O 3 ceramics was improved from 60.97 kV/cm at x = 0 to 103.66 kV/cm at x = 0.04. The optimum energy storage properties of (Ba 0.98 Li 0.02 )(Mg x Ti 1− x )O 3 ceramics were obtained with energy storage density of 0.76 J/cm 3 at 102.5 kV/cm when x = 0.04, which is nearly 2.3 times larger than the pure (Ba 0.98 Li 0.02 )TiO 3 ceramic, and the energy storage efficiency was improved from 64 to 87%.
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Applied Nanoscience
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2022
·Vol. 12
·期 9
·2683-2693
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IF 3.869
Chi Yu,Ye Zhenghe,Su Xianyan,Li Zhao,Ren Xuexiang
In this work, a compound was fabricated using β-cyclodextrin (β-CD) and propithiumazole (PTC). FTIR and TG were used to analyze the intermolecular force and thermal stability of the compound and results indicated. The intermolecular forces were van der Waals forces. According to previous research, the seed coat agent and suspension concentrate (SC) were prepared using this compound and auxiliary. The inhibitory effect on Fusarium graminearum was studied with a bioassay. The data suggested inhibition rate of microencapsulated PTC are about 7.8% and 5% higher than PTC at 72 h and 192 h, respectively. In addition, results of pot experiments suggested dry weight of crops were increased after using seed coat agent contained microencapsulated prothioconazole which indicates that the seed coat agent may be beneficial to protein synthesis. Compared to commercial PTC, field experiments were conducted to investigate the preventive effects of SC against fusarium head blight (FHB). The results of toxicity test and field experiment showed that this compound can improve the utilization efficiency about 5% of PTC and reduce pesticide injury to wheat seeds.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 30
·期 1
·1060-1071
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IF 5.19
Zhang Xinyu,Sun Kexin,Wang Xu,Shi Xu,Gong Duqiang
Chlorpyrifos (CPF), an organophosphorus pesticide, is detected commonly in environments, where it is thought to be highly toxic to non-target organisms. However, the mechanism of CYP450s pathway mediated by nuclear receptors on CPF-induced apoptosis and necroptosis at the cellular level and the effect of CPF on the cytotoxicity of the chicken hepatocarcinoma cell line (LMH) has also not been reported in detail. Therefore, this experiment aims to explore whether CPF can improve apoptosis and necroptosis in LMH cells by activating the nuclear receptors/CYP450s axis. LMH cells, the subject of this study, were exposed to 5 μg/mL, 10 μg/mL, and 15 μg/mL doses of CPF. With the increase of CPF concentration, the increase of nuclear receptor level led to the up-regulation of CYP450s activity. With the massive production of ROS, the expression of apoptotic pathway genes (Bax, Caspase9, and Caspase3) enhanced, while Bcl-2 expression dropped sharply. The expression of programmed necroptosis genes (RIPK1, RIPK3, and MLKL) heightened, and Caspase8 reduced considerably. In short, our data suggests that excessive activation of nuclear receptors and CYP450s induced by CPF promotes ROS production, which directs apoptosis and programmed necroptosis in LMH cells. Graphical abstract
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 19
·15520-15532
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IF 2.779
Zhang Xiaoyan,Yang Xu,Wang Zhaopeng,Pan Qi,Chu Baojin,Zuo Ruzhong
Our previous work proposed that except for ferromagnetic and piezoelectric properties, mechanical quality factor is also an important parameter for high magnetoelectric response of BiFeO 3 -based multiferroic ceramics. In this work, in order to improve the mechanical quality factor of BiFeO 3 -based ceramics and obtain higher magnetoelectric response, we use Mn as a dopant and prepare 0.75BiFe 1− x Mn x O 3 -0.25BaTiO 3 ( x = 0, 0.0025, 0.005, 0.0075, 0.01) ceramics. The dielectric, piezoelectric, magnetic, and magnetoelectric properties of the ceramics with different Mn doping levels and different sintering temperatures are studied comprehensively. We find that the piezoelectric response, mechanical quality factor, ferromagnetic property, and magnetoelectric response can be improved by optimization of the composition and sintering temperature of the ceramics. A large magnetoelectric coefficient α E \(\sim\) 2 V/(cm Oe) is achieved at resonant frequency when doping content of Mn is 0.75 mol% and sintering temperature is 1030 \(\mathrm{^\circ{\rm C} }\) . Such high value of α E is attributed to the combined effect of improved mechanical quality factor, high piezoelectric coefficient, and enhanced ferromagnetism. It is among the largest α E values obtained in single-phase BiFeO 3 -based ceramics. Moreover, our work further verifies the mechanical quality factor is an important parameter to achieve a high magnetoelectric response in BiFeO 3 -based ceramics.
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npj Flexible Electronics
·
2022
·Vol. 6
·期 1
·1-9
·
IF 12.019
Zhang Chao,Zhang Chi,Wu Xinyue,Ping Jianfeng,Ying Yibin
Plant wearable sensors have potential to provide continuous measurements of plant physiological information. However, stable and high-fidelity monitoring of plants with glandular hairs and wax is challenging, due to lacking interface adaptability of conventional plant wearable sensors. Here, inspired by adaptive winding plant tendrils, an integrated plant wearable system (IPWS) based on adaptive winding strain (AWS) sensor for plant pulse monitoring was developed. The IPWS consists of three modules, i.e. an AWS sensor, a flexible printed circuit, and a smart phone APP display interface. As the key element, the AWS sensor can adaptively wrap around the tomato stem. Importantly, with the serpentine-patterned laser-induced graphene, the AWS sensor exhibits excellent resistance to temperature interference with a temperature resistance coefficient of 0.17/°C. The IPWS is demonstrated to be stable and high-fidelity monitoring the plant pulse, which can reflect the growth and water state of tomato plant in real time.
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
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2022
·Vol. 147
·期 21
·12019-12032
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IF 4.755
Wang Wen-He,Su Wei,Hu Shao-Yu,Huang Yan,Pan Yong,Chang Shun-Chieh,Shu Chi-Min
Polymethylmethacrylate (PMMA) is a common polymer electrolyte matrix material whose pyrolysis characteristics are vital factors affecting the development of PMMA-based polymer electrolytes. In this study, four polymer electrolytes based on PMMA were prepared. Electrochemical workstation was used to verify the electrochemical performance of PMMA-based polymer electrolytes Fourier-transform infrared spectroscopy was adopted to assess the changes of pure polymer and polymer electrolyte groups, and the synchronous thermal analyzer was used to analyze the pyrolysis characteristics of PMMA-based polymer electrolytes. The apparent activation energy of PMMA-based polymer electrolyte was calculated by Kissinger method and FWO method, and the integral method Coats–Redfern was used to determine the pyrolysis mechanism function of the main pyrolysis stage. The results revealed that PMMA-based polymer electrolytes had two or three pyrolysis stages at high temperature. The PMMA composite gel polymer electrolyte had the highest thermal stability, whereas the gel polymer electrolyte had the lowest apparent activation energy. The apparent activation energy was 235.9 and 127.8 kJ mol −1 for PMMA composite electrolyte and PMMA gel polymer electrolyte, respectively. The main pyrolysis mechanism of PMMA-based polymer electrolytes was third-order reaction and three-dimensional diffusion reaction.
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CATALYSIS LETTERS
·
2022
·Vol. 153
·期 4
·1159-1169
·
IF 2.936
Liang Jilei,Fan Mengwei,Wu Wenjie,Wu Mengmeng,Cai Wangshui,Xinxing Gao,Huang Tingting,Rui Haiyun
This study shows the successful encapsulation of sandwich cobalt–tungsten polyoxomolybdate (Na 12 [WCo 3 (H 2 O) 2 (CoW 9 O 34 ) 2 ], abbreviated as CoWPOM) guest in mesoporous metal–organic framework MIL-101 host under static condition via a facile post-synthesis strategy. Several characterizations including powder XRD, FTIR, TGA, SEM–EDS, UV–vis DRS, XRF, and low temperature N 2 adsorption–desorption isotherm demonstrate the incorporation and homogenous-distribution of the sandwich CoWPOM guests in cavities of the MIL-101 host. The CoWPOM@MIL-101 composite possesses a better synergistic effect, and it demonstrates an excellent oxidative desulfurization catalytic activity with the DBT removal of 98.1% and recyclability at least 5 times without obvious activity decrease. Graphical Abstract
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危险品化学品经营许可证（带存储）