APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
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IF 24.319
Di Li,Zengyong Li,Ren Zou,Ge Shi,Yiming Huang,Wu Yang,Wang Yang,Chuanfu Liu,Xinwen Peng
Developing efficient bifunctional electrocatalyst for overall water splitting and conversion of biomass into value-added products at large current density is essential but challenging. Herein, a hierarchical Fe-doped Ni 2 P nanosheets hybridized with C on Ni foam (Fe-Ni 2 P@C/NF) was developed as a robust bifunctional catalyst with excellent catalytic activity for hydrogen evolution reaction (HER) with overpotentials of 75 and 313 mV at 10 and 1000 mA cm −2 , respectively, and as well as for OER with a lower overpotential of 269 mV at 400 mA cm −2 . Particularly, the integrated double-electrode electrolyzer for simultaneous HER and biomass-derived monosaccharide oxidation reaction (MOR) using Fe-Ni 2 P@C/NF only requires a low voltage of 1.55 V to drive a current density of 100 mA cm −2 . Meanwhile, the value-added lactic acid is obtained at the anode. This strategy of coupling biomass oxidation to promote H 2 production can significantly reduce energy consumption and obtain additional high value-added products.
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CERAMICS INTERNATIONAL
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2022
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IF 5.532
Yunfei Yao,Xiangyang Xu,Hongye Zhao,Yuanlin Tong,Yina Li
In the development of high-performance lithium-ion batteries (LIBs), the composition and structure of electrode materials are of critical importance. Silicon has a theoretical specific capacity 10 times that of graphite, nonetheless, its application as an anode material confronts challenge as it undergoes huge volume change and pulverization amidst the alloying and dealloying processes. Herein, a novel method to prepare a multilayer Si-based anode was proposed. Three layers, SiO 2 , nickel and triethylene glycol (TEG), were coated successively on Si nanoparticles , which served respectively as the sources of SiO x , sacrificial templates and carbon. Nickel can not only serve as a hollow template, but also play a catalytic role, which makes carbonization and redox reactions occur synchronously under a mild condition. Amid the carbonization process of TEG at 450 °C, several-nm-thick SiO 2 layer can react with the as-derived carbon to form a silicon suboxides (SiO x (0 < x < 2)) intermedium layer. After removing the nickel template, a micro-nano scaled Si@SiO x @void@C with conformal multilayer-structure can be obtained. The BET specific surface area and pore volume of powders were increased dramatically because of the derivation of abundant voids, which can not only buffer the swelling effect of silicon, but also provide richer ionic conductivity . The as-assembled half-cell with Si@SiOx@void@C as the anode material possesses high capacity (∼1000 mAh g −1 at 3 A g −1 ), long cycle life (300 cycles with 77% capacity retention) and good rate performance (558 mAh g −1 at 5 A g −1 ).
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Jianfeng Wang,Jun Li
The traditional PP separator is failed to inhibit the polysulfide shuttle effect for the lithium-sulfur ctteries. Besides, it has poor safety porblem when used at high temperatures. Therefore, it is urgent to develop new modified separator to repalce the traditional separator. To deal with these problems, layered hierarchical C@MoS 2 spheres are prepared and modified the traditional separator. Due to the presence of the C@MoS 2 modified separator, the Li-S batteries with C@MoS 2 separator display high specific capacity and superior cycling stability even at high rate of 2C. The high electrochemical performance is attributed to efficient inhibition of shuttle effect by the adsorption and catalytic conversion of polysulfide on the C@MoS 2 separator. This work has a certain reference value for the future large-scale application of lithium-sulfur battery.
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高影响因子
ACS Applied Nano Materials
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2022
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IF 6.14
Zhuqing Zhao,Muya Cai,Haijia Zhao,Qiang Ma,Hongwei Xie,Pengfei Xing,Yan xin Zhuang,Huayi Yin
Electrolysis of SiO2 to produce Si in MgCl2-based molten salt faces the challenge of generating chlorine gas at a graphite anode. Herein, we replace the graphite anode with a Mg2Si alloy anode that is paired with a C–SiO2 cathode in molten NaCl–KCl–MgCl2. During the paired electrolysis, the Mg2Si anode releases two Mg2+ ions into the electrolyte, resulting in Si nanostructures, while the C–SiO2 cathode is reduced to C–Si composites without generating SiC. Thus, both electrode reactions obtain desired products, which eliminates chlorine gas evolution and tailors the structure and composition of Si. In addition, the electrolytic Si nanostructures and C–Si composites show enhanced lithium-storage performances. The anodic Si nanostructures display a high initial Coulombic efficiency of 82.7% and achieve a cycling capacity of 1490 mAh g–1 300 cycles later under 2 A g–1. The cathodic C–Si composite that remains inside the carbon matrix derived from rice husks maintains a stable capacity of 780 mAh g–1 and 92.1% capacity retention after 200 cycles at 0.5 A g–1. In addition to Si-based anode materials, this study offers an economical and green paired electrolysis approach to preparing various functional materials.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
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IF 7.139
Yuehui Liu,Xiaobo Shi,Xuguang Liu,Xia Li
Nanocomposites of C–Ta 4+ co-doped NaTaO 3 and reduced graphene oxide (C-NTO/rGO) with highly efficient photocatalytic activity were fabricated by a one-step solvothermal reaction. The optimum composites C-NTO/3rGO (with 3 wt% rGO) exhibited superior photocatalytic activity for the degradation of RhB over a mono-component counterpart under visible light irradiation . The photocatalytic efficiency was found to be as high as 97% for 90 min. Both XRD and XPS characterizations indicated that the doping of carbon into the NaTaO 3 lattice leads to the reduction of Ta 5+ to Ta 4+ . Furthermore, the co-doping significantly narrows the band gap (about 2.8 eV). Photo-luminescence (PL), time resolved transient PL decay spectra and photo-current results confirmed that photo-induced hole-electron pairs can be effectively separated resulting from the introduction of rGO. The synergistic effect of a decreased band gap and highly effective separation of photo-generated electrons and holes may be responsible for the enhanced photocatalytic activity of the fabricated nanocomposites. Both h + and •OH active radicals were found to be the key factors for the photo-decomposition process of RhB over the nanocomposites, while •O 2 − was also involved to a smaller extent. A possible photo-degradation mechanism for C-NTO/rGO was proposed on the basis of the experiments results.
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Oxidative Medicine and Cellular Longevity
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2022
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IF 7.31
Tao Long,Qian Wu,Jing Wei,Yong Tang,Yan-Ni He,Chang-Long He,Xue Chen,Lu Yu,Chong-Lin Yu,Betty Yuen-Kwan Law,Jian-Ming Wu,Da-Lian Qin,An-Guo Wu,Xiao-Gang Zhou
Parkinson’s disease (PD) is a complex neurological disorder characterized by motor and nonmotor features. Although some drugs have been developed for the therapy of PD in a clinical setting, they only alleviate the clinical symptoms and have yet to show a cure. In this study, by employing the C. elegans model of PD, we found that ferulic acid (FA) significantly inhibited α-synuclein accumulation and improved dyskinesia in NL5901 worms. Meanwhile, FA remarkably decreased the degeneration of dopaminergic (DA) neurons, improved the food-sensing behavior, and reduced the level of reactive oxygen species (ROS) in 6-OHDA-induced BZ555 worms. The mechanistic study discovered that FA could activate autophagy in C. elegans, while the knockdown of 3 key autophagy-related genes significantly revoked the neuroprotective effects of FA in α-synuclein- and 6-OHDA-induced C. elegans models of PD, demonstrating that FA exerts an anti-PD effect via autophagy induction in C. elegans. Furthermore, we found that FA could reduce 6-OHDA- or H2O2-induced cell death and apoptosis in PC-12 cells. Moreover, FA was able to induce autophagy in stable GFP-RFP-LC3 U87 cells and PC-12 cells, while bafilomycin A1 (Baf, an autophagy inhibitor) partly eliminated the protective effects of FA against 6-OHDA- and H2O2-induced cell death and ROS production in PC-12 cells, further confirming that FA exerts an anti-PD effect via autophagy induction in vitro. Collectively, our study provides novel insights for FA as a potent autophagy enhancer to effectively prevent neurodegenerative diseases such as PD in the future.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Yang Yu,Xiaoping Cai,Xinyang Jiao,Chengyi Xu,Jinan Niu,Peizhong Feng
Ni-Al-Cr intermetallic compounds are candidate at extreme environment due to their excellent oxidation resistance at high temperature, and the oxidation resistance of Ni-Al-Cr alloy system has been studied extensively. However, the research on oxidation resistance mechanism of porous Ni-Al-Cr intermetallic compounds is still not deep. In our work, porous Ni-Al-Cr intermetallic compounds were synthesized by thermal explosion, and the oxidation resistance of porous Ni-Al-Cr system was mainly investigated. The results indicate that Cr promotes the formation of highly protective continuous Al 2 O 3 layer, increasing the oxidation resistance at 900 °C of porous Ni-Al-Cr. After oxidation at 900 °C for 120 h, the minimum mass gain of Ni-Al-Cr products is only 6.96%.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Xiaofang Chen,Yimin Chen,Lingyu Zhang,Zhihua Liu,Enhui Qiu,Qiaoling Liu,Michelle D. Regulacio,Chang Lin,Da-Peng Yang
Owing to the numerous potential applications of ZnO nanomaterials , the development of ZnO-based nanocomposites has become of great scientific interest in various fields. In this paper, we are reporting the fabrication of a series of ZnO/C nanocomposites through a simple “one-pot” calcination method under three different temperatures, 500 ℃, 600 ℃, and 700 ℃, with samples labeled as ZnO/C-500, -600, and -700, respectively. All samples exhibited adsorption capabilities and photon-activated catalytic and antibacterial properties, with the ZnO/C-700 sample showing superior performance among the three. The carbonaceous material in ZnO/C is key to expanding the optical absorption range and improving the charge separation efficiency of ZnO. The remarkable adsorption property of the ZnO/C-700 sample was demonstrated using Congo red dye, and is credited to its good hydrophilicity . It was also found to exhibit the most notable photocatalysis effect due to its high charge transfer efficiency. The hydrophilic ZnO/C-700 sample was also examined for antibacterial effects both in vitro (against Escherichia coli and Staphylococcus aureus ) and in vivo (against MSRA-infected rat wound model), and it was observed to exhibit synergistic killing performance under visible-light irradiation. A possible cleaning mechanism is proposed on the basis of our experimental results. Overall, this work presents a facile way of synthesizing ZnO/C nanocomposites with outstanding adsorption, photocatalysis, and antibacterial properties for the efficient treatment of organic and bacterial contaminants in wastewater.
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高影响因子
Defence Technology
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2023
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IF 5.1
Yujie Yan,Bo Jin,Rufang Peng
Biomass chitosan (CS) was used as a template, graphitic phase carbon nitride (g-C 3 N 4 ) with high nitrogen content and certain catalytic activity was used as a dopant, and nano-transition metal cobalt (Co) was used as a catalytic center point. The carbon aerogel (C (CS)/g-C 3 N 4 /Co) with a three-dimensional network-like structure was prepared by assembling the three materials through experimental operations such as freeze-drying and high-temperature carbonization. It was demonstrated by scanning and transmission characterization that the CS in the carbon aerogel could provide more active sites for the cobalt nanoparticles, and the doping of graphite-phase carbon nitride as a template dispersed the cobalt nanoparticles and changed the conductivity of the CS. To investigate the catalytic effect of carbon aerogel on ammonium perchlorate (AP), it was investigated by differential thermal analyzer and TG thermal analysis. This carbon aerogel was very effective in catalyzing AP, and the 10 wt% content of the catalyst reduced the AP pyrolysis peak from 703.9 to 595.5 K. And to further investigate the synergistic effect of the three materials, further carbon aerogels such as C (CS)/Co, g-C 3 N 4 /Co were prepared and applied to catalyze AP, and the same ratio reduced the AP pyrolysis peak by 98.1 °C and 97.7 °C. This result indicates a synergistic effect of the assembly of the three materials.
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Journal of Energy Storage
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2023
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IF 9.4
Yiqing Lu,Zhimin Zou,Yu Bai,Xin Wang,Hongwang Zhang,Chunhai Jiang
Commercialization of SiO/graphite (SiO/G) composite anode material has been partially conducted in modern-model Li-ion batteries but is still limited by its relatively high cost and inferior stability. Improving the Li-ion storage performance as well as lowering the manufacturing cost of SiO/G anode has been the ongoing target of many studies. Herein, a low cost SiO/G anode with good Li-ion storage performance is developed by facilely integrating SiO nanoparticles into spent graphite (SG) extracted from used LiFePO 4 batteries. The loose SG particles after repeated charge/discharge cycles can be easily exfoliated and combined with the SiO nanoparticles during the mechanical ball-milling treatment. Further processing the composite into spherical structure by spray-drying and pyrolysis results in practically applicable anode materials. The SiO/SG/C anode with a SiO mass ratio of 30 % exhibits the best overall performance including an excellent rate capability (385 mAh g −1 at 3 A g −1 ) and encouraging cycle stability (442 mAh g −1 after 300 cycles at 1 A g −1 ). The coin-type full cells coupling the pre-lithiated spherical SiO/SG anode and NCM811 cathode delivers a high energy density of 461 Wh kg −1 (based on the active masses of both electrodes) and good cycle performance (74.4 % capacity retention at 0.5C after 100 cycles). This work not only provides a high performance yet low cost SiO/G anode material, but explores a high value added way for the reuse of SG, thus can practically push forward the development of LIBs .
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Cell Chemical Biology
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2023
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IF 8.6
Xueyang Jin,Xuben Hou,Xue Wang,Ming Zhang,Jinyao Chen,Minghui Song,Jiaozhen Zhang,Hongbo Zheng,Wenqiang Chang,Hongxiang Lou
Summary Filamentation is an important virulence factor of the pathogenic fungus Candida albicans . The abolition of Candida albicans hyphal formation by disrupting sterol synthesis is an important concept for the development of antifungal drugs with high safety. Here, we conduct a high-throughput screen using a C . albicans strain expressing green fluorescent protein-labeled Dpp3 to identify anti-hypha agents by interfering with ergosterol synthesis. The antipyrine derivative H55 is characterized to have minimal cytotoxicity and potent inhibition of C . albicans hyphal formation in multiple cultural conditions. H55 monotherapy exhibits therapeutic efficacy in mouse models of azole-resistant candidiasis. H55 treatment increases the accumulation of zymosterol , the substrate of C-24 sterol methyltransferase (Erg6). The results of enzyme assays, photoaffinity labeling , molecular simulation, mutagenesis , and cellular thermal shift assays support H55 as an allosteric inhibitor of Erg6. Collectively, H55, an inhibitor of the fungal-specific enzyme Erg6, holds potential to treat C . albicans infections.
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FOOD CHEMISTRY
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2023
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IF 8.8
Huafang Zhang,Qinghong Pan,Wanying Cai,Xiaowei Shi,Da-Peng Yang,Hetong Lin,Enhui Qiu
Antibiotic monitoring remains vital to ensure human health and safety in the environment and foods. As the most popular detection method, photoelectrochemical (PEC) sensor can achieve rapid and accurate detection of antibiotics with the advantages of high sensitivity, easy-to-preparation process, as well as high selectivity. Herein, an extremely-efficient visible-light responsible ZnO/C nanocomposite was prepared and combined with acetylene black (as an enhanced conductive matrix), and the electron migration efficiency was greatly accelerated. Meanwhile, a molecularly imprinted polymer obtained by electrical agglomeration was conjugated as a specific recognizing site for target. Furthermore, the as-prepared rMIP-PEC sensor showed a low detection limit (8.75 pmol L −1 , S/N = 3) in a wide linear detection range of 0.01–1000 nmol L −1 for oxytetracycline (OTC), with excellent selectivity and long-term stability. Our work shed light on applying C-doped ZnO semiconductor and molecularly imprinted polymer as photoelectric active sensing materials for rapid and accurate analysis of antibiotics in foods and environment.
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