JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 20
·16077-16098
·
IF 2.779
Chen Keke,Feng Hange,Li Lingwei,Luo Menghao,Xue Shaolin,Sang Jingxin
The excellent photoresponse of semiconductors enables them as a promising photocatalyst for photocatalytic degradation of organic pollutants and antibiotics, but their practical applications are limited by photogenerated carrier recombination, instability, and fixed energy band positions. Herein, we designed and synthesized a dual Z-scheme flower-like spherical Ag 3 PO 4 /MoS 2 /g-C 3 N 4 (AMN) photocatalyst loaded with different mass of g-C 3 N 4 (3, 5 and 7 mg). Under visible light irradiation, MoS 2 enhanced the light absorption range of AMN composite. The holes concentrated in the valence band of Ag 3 PO 4 provide strong oxidation capacity, and the electrons retained in conduction band of g-C 3 N 4 provide strong reduction ability in the photocatalytic system. It is helpful to improve the separation efficiency of photogenerated carriers and enhance the photocatalytic activity of AMN composite. The AMN photocatalyst loaded with 5 mg g-C 3 N 4 (AMN-5) has the optimal photocatalytic activity. The photocatalytic degradation efficiency of the photocatalyst for methylene blue (MB) within 24 min is 3.98, 1.85, and 1.17 times that of g-C 3 N 4 , Ag 3 PO 4 , and Ag 3 PO 4 /MoS 2 , respectively. After three cycles, the degradation efficiency of AMN-5 for MB decreased from 99.44% to 90%, about 3.79 times of Ag 3 PO 4 (23.77%). In addition, the optimal AMN-5 photocatalyst also has excellent photocatalytic degradation efficiency for Rhodamine B (RhB) and tetracycline (TC). This design and concept provide a promising insight for the photocatalytic degradation of pollutants.
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JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 8
·4625-4639
·
IF 2.047
Wang Xiaodan,Xiao Xue,Zhang Fengfa,Li Zhaoqing,Sun Baihe,Dong Yuanyuan,Wang Huiwen,Liu Chao,Wang Wei,Bateer Buhe
Well-organized metal–organic framework (MOF)-derived carbon-based materials exhibit ideal electromagnetic (EM) absorption performance. Nevertheless, it is still a challenge to reduce the complex permittivity and obtain high electromagnetism compatibility. Herein, magnetic rod-like carbon composite NiCo/ZnO/C with a metal–semiconductor interface structure was successfully fabricated through the pyrolysis of Ni/Co/ZiF8 MOF precursors. By comparing the EM wave properties of three materials, NiCo/ZnO/C displayed the optimal performance by virtue of the cooperation of complex permittivity dielectric loss and the magnetic loss of the composite. ZnO optimized the EM performance of NiCo/ZnO/C with a minimum reflection loss ( RL ) value (−50.7 dB) at 9.1 GHz and thickness of 2 mm. It is demonstrated that ZnO particles dispersed uniformly in the outer layer, which became a “green channel” to enhance the maximum intake of electron transport. Furthermore, the synergy between ZnO and NiCo generated an effective impedance match, enabling EM waves to easily enter the interior of the composite. The aim of this paper is to design and construct a platform containing dual-metals and oxide carbon-based composites for an efficient EM wave absorber. It has been proved that coating oxide on metallic carbon-based materials is an effective way to synthesize microwave absorbers with enormous potential. Graphical Abstract
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CELLULOSE
·
2022
·Vol. 29
·期 15
·8265-8282
·
IF 6.123
Chaudary Aneeba,Patoary Mohammed Kayes,Zhang Meiling,Chudhary Tayba,Farooq Amjad,Liu Lifang
Aerogels are materials comprising hierarchical designs and are of growing significance to acquire advanced structure-based functionality in future technical applications. Since the researchers have previously focused on a single freeze-casting strategy in the fabrication of aerogels, the correlation between processing routes and their integrated characteristics could not be determined. Herein, we constructed cellulose nanofiber (CNF)/chitosan (CS) based composite aerogels (CCSA) by employing random and directional freeze-casting strategies. The effect of such techniques has been explored as a source of an integrated freeze-cast dried porous structure. Random freeze-dried aerogels (r-CCSA) exhibited isotropic properties with high porosity (99.6%) and large pore volume (2.71 mL/g). Whereas, controlled freeze ice-cast nucleation endowed the directional aerogels with ultra-low thermal conductivity (0.027 Wm −1 K −1 ) in the radial direction and about 20% greater (0.033 Wm −1 K −1 ) in the axial direction. Moreover, high BET-specific surface area (342 m 2 /g) and 60% strain adherence was observed for these anisotropic aerogels. This composite bio-mass aerogel preparation approach can offer a clear insight into the adoption of the right methodology considering the potential applications and environmental safety. Graphical abstract
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MOLECULAR AND CELLULAR BIOCHEMISTRY
·
2022
·Vol. 478
·期 2
·241-247
·
IF 3.842
Zhou Quan,Cai Xu,Huang Ying,Zhou Youliang
Curcumin (CUR) is an extract of Curcuma longa Linn., which has various pharmacological activities. The instability, low water solubility and bioavailability of CUR greatly limit its clinical application. This work prepared Pluronic F127-liposome-encapsulated curcumin (CUR-LIP-F127) and explored its functional role in wound healing. Liposome-encapsulated curcumin (CUR-LIP) and CUR-LIP-F127 were prepared. Human keratinocyte cell line (HaCaT) was treated with CUR, Pluronic F127-liposome (LIP-F127) and CUR-LIP-F127, or combined with ML385 (Nrf2 inhibitor). The expression of mRNAs and proteins was detected by quantitative real-time PCR and western blotting. MTT and wound healing assays were performed to detect cell viability and migration. CUR, LIP-F127 and CUR-LIP-F127 all had no influence on cell viability of HaCaT cells. CUR-LIP-F127 treatment significantly accelerated cell migration and enhanced the expression of nuclear factor erythroid-related factor 2 (Nrf2) and kelch-like erythroid cell-derived protein 1 (Keap1) in HaCaT cells with respect to CUR or LIP-F127 treatment. ML385 treatment impaired CUR-LIP-F127-mediated promotion of migration and up-regulation of Nrf2 and Keap1 in HaCaT cells. This work demonstrated that CUR-LIP-F127 activated Nrf2/Keap1 signaling pathway to promote migration of HaCaT cells, suggesting that CUR-LIP-F127 may contribute to wound healing.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 56
·84903-84915
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IF 5.19
Zhao Shujie,Wang Yongqiang,Zhu Kaili,Zhao Dongfeng,Song Qingbin
Currently, biphasic solvents are receiving more attention for CO 2 capture due to their energy-saving potential. Whereas, most of the current biphasic solvents still suffer from high viscosity and low regeneration efficiency. To solve this problem, a novel tri-solvent biphasic solvent triethylenetetramine (TETA)-2–amino–2–methyl–1–propanol (AMP)-1-dimethylamino-2-propanol (1DMA2P) was proposed in this study, and its absorption properties, viscosity changes, desorption properties, recyclability capacity, and reaction mechanism were explored. The results showed that the CO 2 absorption load showed a trend of firstly increasing and then decreasing with the increase of AMP concentration. Although the volume of the rich phase increased with increasing AMP concentration after the absorption, it also decreases the viscosity growth. The viscosity of the solution decreased from 498 mPa•s to 91 mPa•s. During the desorption process, the maximal desorption rates of AMP-containing solvents is significantly greater than that of 2 mol/L (M) TETA + 2 M 1DMA2P (2T2D). Simultaneously, the recyclability capacity of the AMP-containing solvents were also significantly higher than that of 2T2D. The regeneration efficiency of 1.5 M TETA + 0.5 M AMP + 2 M 1DMA2P (1.5T0.5A2D) was 81.92%. It was concluded by 13 C NMR analysis that amino groups in TETA and AMP can react with CO 2 to form carbamates and carbonates. Since AMP in the biphasic solution can generate free protons through various pathways during the desorption process, it promotes the decomposition of TETA-carbamate. This process achieves the deep stripping of CO 2 in biphasic solvent. Overall, TETA-AMP-1DMA2P solution is a promising energy-saving candidate for industrial CO 2 capture due to its competitive absorption–desorption performance and low viscosity.
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Waste and Biomass Valorization
·
2022
·Vol. 14
·期 1
·127-144
·
IF 3.449
Mahmoud Tahany,Liu Chunzhao,Samak Nadia A.
CotA laccase was successfully expressed from Pichia pastoris . Magnetic reduced graphene oxide (MRGO) nanocomposite was synthesized and functionalized with iminodiacetic acid (IDA-NH 2 ), and then chelated with Cu 2+ for effective immobilization with His-tagged CotA laccase. The Cu 2+ -chelated MRGO (MRGO-IDA-Cu 2+ ) showed 175 mg/g-support adsorption capacity. The immobilization of CotA laccase with MRGO-IDA-Cu 2+ nano-hybrid composite was confirmed by Raman spectroscopy, Thermal Gravimetric Analysis, and X-ray diffraction. The use of nano-hybrid MRGO-IDA-Cu 2+ composite to improve heavy oil recovery was investigated. The findings revealed that the interfacial tension between oil and water was reduced to ~ 90% of its original value, and the wettability was changed from the oil-wet state [θ = ∼ 115.2 − 124.5°] to the water-wet state [θ = ∼ 8.9 − 30.1°]. The increase of immobilized CotA laccase concentration and the ratio of nano-hybrid MRGO-IDA-Cu 2+ composite decreases the value of interfacial tension (IFT) and contact angle (CA). The core-flooding studies revealed that the oil recovery process of 0.3 wt% nano-hybrid MRGO-IDA-Cu 2+ composite was enhanced by 82.8%. Graphical Abstract
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MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 7
·1-10
·
IF 6.408
Sun Chenglong,Li Lu,Liu Jialin,Du Yun,Peng Yueyi,Xie Qingji
The photoelectrochemical immunoassay of glycogen phosphorylase BB (GPBB) was studied. A methyl orange/TiO 2 nanorod heterojunction was constructed on a fluorine-doped tin oxide electrode by hydrothermal synthesis, calcination, and chemical adsorption. A sandwich immune structure consisting of GPBB as the first antibody, GPBB, and a CdS@mesoporous silica-ascorbic acid (AA)–GPBB as secondary antibody composite was constructed on each of the selected well surfaces of a 96-well microplate. By adding mercaptoethylamine to structurally destroy the secondary antibody composite and release the electron donor AA, the amplification of photocurrent, and thus the “off–on” photoelectrochemical biosensing of GPBB were realized. The use of the 96-well microplate provides good reproducibility of the assembled immune structures and eliminates the possible effect of the photogenerated hole–induced protein oxidation on the photocurrent. The relevant electrodes and materials were characterized by electrochemistry, UV–vis diffuse reflectance spectra, Fourier transform infrared spectroscopy, X-ray diffractometer, scanning electron microscopy/energy dispersive spectroscopy, transmission electron microscopy and BET method. Under the optimal conditions, the photocurrent was linear with the logarithm of GPBB concentration from 0.005 to 200 ng mL −1 and with a limit of detection of 1.7 pg mL −1 ( S / N = 3). Satisfactory results were obtained in the analysis of real serum samples. Graphical abstract A sandwich immune structure consisting of GPBB first antibody, GPBB, and a CdS@mesoporous silica-ascorbic acid (AA)–GPBB secondary antibody composite was constructed on each of the selected well surfaces of a 96-well microplate. By adding mercaptoethylamine to structurally destroy the secondary antibody composite and release the electron donor AA, the amplification of photocurrent, and thus the “off–on” photoelectrochemical biosensing of GPBB were realized.
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Reaction Kinetics Mechanisms and Catalysis
·
2022
·Vol. 135
·期 5
·2503-2517
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IF 1.843
Wei Qiaolu,Wang Linlin,Chen Xiaopeng,Wu Chenghong,Liang Jiezhen,Wei Xiaojie,Deng Kaixi
In the present work, a highly dispersed NiMo bimetallic alloy catalyst loaded on carbon nanotubes (Ni–Mo/CNTs) was synthesized by wet impregnation. The NiMo bimetallic alloy catalyst presented a superior catalytic hydrogenation performance to the Mo-free one, which obtained a colorless appearance of hydrogenated petro resin at 200 °C and 4 MPa. After nine reuses, the degree of hydrogenation over 14Ni–1Mo/CNTs (the loading ratio of Ni/Mo is 14/1) catalyst remains 90.2%. The 14Ni–1Mo bimetallic alloy catalysts exhibited stronger stability without obvious metal particle sintering, while the Ni monometallic catalysts presented significant deactivation attributed to the aggregation of metal particles. The characterization results confirm the enhanced catalytic performance derived from the metal–metal synergy of the Ni–Mo alloy particles. Besides, the bimetallic 14Ni–1Mo alloy catalyst maintains the excellent desulfurization capacity in the petro resin hydrogenation system, which may be one of the factors contributing to the excellent stability maintained by the Mo-containing catalyst. Graphical abstract
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CELLULOSE
·
2022
·Vol. 29
·期 12
·6831-6843
·
IF 6.123
Du Peng,Xu Yongjian,Shi Yun,Xu Qinghua,Li Shasha,Gao Minlan
With the improvement of medical and health care level in our society, the demand for antibacterial materials is increasing. In this work, we prepared the antibacterial materials by loading silver nanoparticles (AgNPs) on the dialdehyde cellulose (DAC) with in-situ synthesis method. DAC was prepared by pretreating cellulose fiber with sodium metaperiodate (NaIO 4 ) to convert the hydroxyl group into aldehyde group, and then reacted with silver nitrate (AgNO 3 ) to obtain AgNPs loaded on DAC. UV–Vis results show that the characteristic absorption peak of AgNPs at 428 nm appeared in the AgNPs-loaded-DAC. It was observed by SEM that the spherical AgNPs were distributed uniformly on the DAC surface without obvious flocculation. The color of DAC was not changed significantly, indicating that a small amount of AgNPs was loaded. In addition, sodium citrate (Na 3 C 6 H 5 O 7 ) was added in the reaction of DAC and AgNO 3 and its effect on the formation of AgNPs was studied. The results demonstrated that the color of DAC turned deeper and finally dark yellow with reaction time extended. When the reaction time was 60 h, the spherical AgNPs were gradually grown and transformed into triangular prism on the DAC surface. The antibacterial properties of AgNPs showed inhibition zones of 4.90 mm and 7.35 mm (60 h) against Gram-negative ( E. coli ) and Gram-positive ( S. aureus ), respectively, which increased by 40.00% and 14.85% compared with spherical AgNPs (2.5 h) obtained without Na 3 C 6 H 5 O 7 . The research of AgNPs-loaded cellulose-based materials promotes the development prospect of new nano-antibacterial materials. Graphical abstract
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Food Biophysics
·
2022
·Vol. 18
·期 1
·71-81
·
IF 3.34
Qi Yue,Xu Xinglian,Dong Hualin,Yang Zongyun,Wang Peng
In this study, carnosine (0‒0.20%, w/v) was introduced to improve the dispersibility of myosin under a low-salt condition (0.1 M NaCl). The underlying dispersion mechanism was investigated. Carnosine has positive effects on the dispersibility of myosin, as evidenced by the significantly improved solubility and turbidity. After the addition of carnosine, the average particle size in each sample remarkably decreased, and the mole mass of the aggregates decreased from 6.74 × 10 7 g/mol to 4.00 × 10 7 g/mol as the carnosine increased from 0.10 to 0.20%. Changes in protein secondary structure, ζ-potential, and ITC (Isothermal titration calorimetry) results indicated that electrostatic interaction is the main force between myosin and carnosine. Moreover, carnosine may hinder the formation of large aggregates by affecting the structure and charge distribution of the myosin tail when carnosine was ≤ 0.10%. However, excess carnosine (˃ 0.10%) had a negative effect on the long-term stability of the protein solution. Turbiscan stability index, visual appearance, and hydrophobicity analyses showed that the instability of the system was possibly due to increase in the hydrophobicity of myosin head after excess carnosine was applied. Our research may contribute to the improvement of the functional properties of myosin under low-salt condition and regulation of protein behavior. Graphical Abstract
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ACTA PHARMACOLOGICA SINICA
·
2022
·Vol. 44
·期 3
·561-572
·
IF 7.169
Hong Yang,Xu Wan-qing,Feng Jing,Lou Han,Liu Heng,Wang Lei,Cui Hao,Jiang Lin-tong,Xu Ran-chen,Xu Heng-hui,Xie Min-zhen,Li Yang,Kopylov Philipp,Wang Qi,Zhang Yong
Nitidine chloride (NC) is a standard active component from the traditional Chinese medicine Zanthoxylum nitidum (Roxb.) DC. (ZN). NC has shown a variety of pharmacological activities including anti-tumor activity. As a number of anti-tumor drugs cause cardiotoxicity, herein we investigated whether NC exerted a cardiotoxic effect and the underlying mechanism. Aqueous extract of ZN (ZNE) was intraperitoneally injected into rats, while NC was injected into beagles and mice once daily for 4 weeks. Cardiac function was assessed using echocardiography. We showed that both ZNE administered in rats and NC administered in mice induced dose-dependent cardiac hypertrophy and dysfunction, whereas administration of NC at the middle and high dose caused death in Beagles. Consistently, we observed a reduction of cardiac autophagy levels in NC-treated mice and neonatal mouse cardiomyocytes. Furthermore, we demonstrated that autophagy-related 4B cysteine peptidase (ATG4B) may be a potential target of NC, since overexpression of ATG4B reversed the cardiac hypertrophy and reduced autophagy levels observed in NC-treated mice. We conclude that NC induces cardiac hypertrophy via ATG4B-mediated downregulation of autophagy in mice. Thus, this study provides guidance for the safe clinical application of ZN and the use of NC as an anti-tumor drug.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2022
·Vol. 39
·期 2
·266-275
·
IF 2.726
Xiong Xiaoyan,Li Xiaobin,Zhu Zifan,Zhang Ending,Shi Jun,Lu Mangeng
Cationic water-based polyurethane(CWPU) was synthesized to explore aloe-emodin modifies to obtain CWPU materials with better comprehensive performance. It provides a simple way to synthesize antibacterial waterborne polyurethane, which is to introduce the end-blocking group of herbal extracts into the structure. It contains synergistic antibacterial effect of herbal antibacterial and quaternary ammonium ion on Escherichia coli . It makes the material resist the erosion of bacterial, and increase the service life of materials. When the pH value of the environment changes, the UV absorbance of the aloe-emodin modified cationic water-based polyurethane(AE-CWPU) also changes. Therefore, within a certain detection range, AE-CWPU has great applications in the field of smart response materials. The modified thermodynamic properties have been improved, and the mechanical properties basically maintained the maximum stress, and the elongation at break was reduced.
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