查找使用阿拉丁产品的科研文献

Bulk-Phase Grain Boundaries Regulation Enables Highly Reversible Zn Anodes for Rechargeable Aqueous Zn-Ion Batteries

Hong Zhang,Lizhuang Yang,Haozhi Wang,Bingfeng Cui,Jingxian Wang,Xiaopeng Han,Wenbin Hu

Dendrites and side reactions of Zn anodes severely restrict the application of aqueous Zn-based batteries for grid-scale energy storage. While surface/interface modification strategies have shown some progress in improving Zn anode reversibility, they still fall short in addressing the overall regulation and intrinsic mechanisms from the bulk-phase perspective. Herein, a bulk-phase composite Zn/CNTs anodes fabricated by a powder-metallurgy-based strategy is introduced. Benefiting from the regulation of grain boundary engineering on local electric conductivity, electric field distributions, and Zn atom absorption energy, the Zn/CNTs anodes effectively suppress dendrite growth and enhance corrosion resistance during Zn stripping/plating cycles. Symmetrical cells equipped with Zn/CNT4 anodes exhibit extended cycling stability with minimal voltage hysteresis (only 22 mV). Furthermore, the full cells incorporating Zn/CNT4 with commercial MnO 2 demonstrate superior rate performance and specific capacitance retention after 500 h cycling. This breakthrough opens up new avenues for optimizing metallic anodes at the bulk phase level using powder metallurgy, enabling scalable manufacturing processes, and providing valuable insights for various metal anode systems.

Fluorescent Pirfenidone-Cerium(III) nanocomplexes protect against radiation-induced pulmonary fibrosis and inhibit tumor cell growth

Jingxuan Lu,Jingwen Luo,Jie Li,Shiyan Fu,Yonghong Ran,Juan Li,Yazhen Zhao,Yuhui Hao

Radiation-induced pulmonary fibrosis (RIPF) is a common adverse effect of thoracic radiation therapy. Although pirfenidone is approved for treating pulmonary fibrosis, its utility is limited by its short half-life and ability to scavenge reactive oxygen species (ROS). Thus, a nanoscale complexes of cerium(III), 10-carboxyl-pirfenidone, and 1,10-phenanthroline (NPs Ce(phen)Pirf 3 ) was developed to prevent RIPF in a mouse model. NPs Ce(phen)Pirf 3 was successfully prepared using a simple moderate solvothermal method and characterized using FTIR , electrospray ionization MS , 1H nuclear magnetic NMR, and transmission electron microscopy . The cerium(III) nanocomplexes exhibited a near-spherical shape and dissolved in water with a diameter of ∼125.2  nm , as characterized by dynamic light scattering . Compared with pirfenidone, NPs Ce(phen)Pirf 3 with blue fluorescence exhibited prolonged retention times with thoracic-specific accumulation in vivo. Mice received 15 Gy gamma-ray treatment on the thorax with or without NPs Ce(phen)Pirf 3 or pirfenidone administration. NPs Ce(phen)Pirf 3 improved lung function, alleviated radiation-induced pathological changes in the lung tissues, and reduced collagen deposition 16 weeks after radiation. Our results from in vivo and in vitro experiments demonstrated that NPs Ce(phen)Pirf 3 increased the ROS-scavenging ability. Additionally, NPs Ce(phen)Pirf 3 regulated epithelial-mesenchymal transition (EMT)-related proteins, including up-regulate E-cadherin and down-regulate N-cadherin, α-SMA, and TGF-β1 in RLE-6TN cells, which suggested NPs Ce(phen)Pirf 3 may alleviate RIPF by inhibiting EMT. Finally, NPs Ce(phen)Pirf 3 also inhibited the growth of thoracic tumor cells in mice. NPs Ce(phen)Pirf 3 had a protective role against RIPF and antitumor effects, suggesting that they are a promising therapy for thoracic radiation-induced RIPF.

Nickel-organic Frameworks with Hierarchical Flowers Structure Fabricated by Surfactant-assisted Solvothermal Method for High-performance Supercapacitors

Yi Wu,Xiangpeng Ding,Yumei Luo,Fen Xu,Lixian Sun,JianHao Lao,Xiaohui Qin,Cai Dan,Yu Wang,Qingqing Yin,Tao Wang,Kexiang Zhang,Bin Li,Huanzhi Zhang,Yongjin Zou

In this work, Ni-MOF (R-160) with a hierarchical flower-like structure is fabricated by a facile solvothermal method with surfactant assistance. Benefiting from its structure, R-160 has a very high specific surface area and a large number of exposed active sites. Electrochemical research results show that the electrochemical performance of R-160 prepared with sodium dodecyl sulfate (SDS) is superior to that of B-160 prepared without SDS assistance. For instance, the specific capacitance of B-160 is only 808 F g -1 at a current density of 1 A g -1 . Nevertheless, the specific capacitance of R-160 reaches 1036 F g -1 under the same conditions, which is 28.2% higher than that of B-160. Moreover, the energy density of an asymmetric device assembled with R-160 and AC is 38.3 W h kg -1 at a power density of 749.9 W kg -1 .

Design of rod-like NiCo2O4 with nanostructure derived from ZIF-67 as excellent material for supercapacitors

Chunyong Zhang,Jianning Li,Li Shu,Yuyue Zhao,Yiwen Zhang,Yingpin Wen,Hengfei Qin

MOF (metal-organic framework) is an ideal precursor for the synthesis of metal oxides owing to the high porosity and provision of redox sites. This study focused on the formation of NiCo 2 O 4 rod-like nanostructure from Co-MOF by a simple hydrothermal method to overcome disadvantages of MOF such as low electrical conductivity and stability. Noticeably, NiCo 2 O 4 with unique nanostructure could be obtained when the template removed after calcination. It was observed by SEM and TEM, the morphology of NiCo 2 O 4 nanorods with a diameter was about 100 nm. Moreover, the morphology of Co 3 O 4 , which converted from MOF after calcination at 350 °C was similar to hexahedron. The synthesized rod-like NiCo 2 O 4 electrode delivered specific capacitance of 1376 F/g at a current density of 1 A/g, indicating the excellent charge transfer ability in 6 M KOH solution. Therefore, this study presents a hydrothermal method to prepare the electrode materials based on MOF for supercapacitors effectively.

Solid Oxide Membrane-Assisted Controllable Electrolytic Production of TaC Nanoparticles in Molten CaCl2

Kai Zheng,Fanghai Lu,Qiong Long,Cuilian Shi,Xingli Zou,Zhanling Zhang,Xiaoling Zuo,Chaoyi Chen,Xiangdong Su

The direct electrolytic production of TaC nanoparticles from a Ta 2 O 5 /C precursor in molten CaCl 2 by using solid oxide membrane (SOM) technology was investigated in this work. A Ta 2 O 5 /C pellet pressed under 6 MPa was used as the cathode, and a yttria-stabilized zirconia (YSZ) tube filled with carbon-saturated liquid tin served as the anode to control the electrolysis process. The phase composition and morphology characteristics of the electrolysis products were investigated. The results show that TaC nanoparticles could be obtained directly from a Ta 2 O 5 /C mixture in molten CaCl 2 at 1000 °C and 4.0 V within 4 h.

Flexible Pressure Sensors Based on CB/CNTS at PDMS for Wind Pressure Field Monitoring of Cable-Stayed Bridge Using Machine Learning

Yifeng Huang,Yifan Gao,Xiaoming Wang,Wentao Dong,Daojin Yao,Xiao Cheng,Yong Hu

Reaction Mechanism and Technical Application of Metallic Bismuth Extraction from Bismuthinite Concentrate by Low-Temperature Alkaline Smelting

Wei Jin,Shenghai Yang,Chaobo Tang,Yun Li,Cong Chang,Yongming Chen

Traditional bismuthinite concentrate precipitation smelting has problems of low recovery of valuable metals (e.g., Bi, Cu, Mo, and Ag), high fuel consumption, and high cost of SO2 flue gas treatment. Therefore, in this study, an eco-friendly alkaline smelting process was proposed to extract metallic bismuth and recover valuable metals. The phase equilibrium composition of the Bi2S3-Na2CO3-C system was revealed by thermodynamic simulations at different temperatures and reductant contents. Based on reaction product characterizations and thermodynamic simulations, the following reaction mechanism and suitable bismuth extraction path were confirmed: Bi2S3 first reacted with Na2CO3 to form Bi2O3 and Na2S, and the intermediate (Bi2O3) was then reduced to metallic Bi by both C and CO. Under optimized conditions (Wbismuthinite/WNa2CO3/Wcoke = 200:300:20, 900 °C, 150 min), up to 96.56% Bi, 75.07% Pb, and 85.11% Ag were enriched in crude bismuth, respectively, while 93.57% Cu, 70.23% Fe, 96.63% Mo, and 94.34% W entered the salt slag. More than 99.9% W and Mo were recovered as Na2WO4 and Na2MoO4, respectively, from the salt slag by water leaching. In the leaching residue, chalcopyrite, pyrite, and elemental sulfur could be recovered by flotation.

NiFe2O4-Coated Activated Carbon Composite as a Cathode Material for Lithium–Sulfur Batteries

Riguang Cheng,Lixian Sun,Fen Xu,Yumei Luo,Chenchen Zhang,Yongpeng Xia,Sheng Wei,Yanxun Guan,Mengmeng Zhao,Qi Lin,Hao Li

Lithium–sulfur batteries are promising as next-generation rechargeable energy-storage devices because of their high energy density, low cost, and environmental friendliness. However, sulfur cathodes suffer from low specific capacity caused by the poor electrical conductivities of the active materials and fast capacity decay resulting from polysulfide dissolution/shuttling. Herein, we report a facile and low-cost method to solve these problems using an activated carbon (AC)–NiFe 2 O 4 /S hybrid material in which NiFe 2 O 4 is uniformly distributed on AC through a simple wet impregnation method. The AC–NiFe 2 O 4 /S material not only has a strong catalytic effect on sulfur reduction, but also provides strong binding sites to trap polysulfide intermediates. An AC–NiFe 2 O 4 /S electrode shows favorable electrochemical properties including stable reversible capacity (0.24% capacity decay per cycle at 0.1 C, retaining a capacity of 602.7 mAh g −1 after 170 cycles; stable cycling at 0.5 C, retaining a capacity of 501.9 mAh g −1 after 100 cycles), excellent rate performance, and fast electrochemical reaction kinetics compared with those of a reference AC/S electrode, which are attributed to the synergistic effects between NiFe2O4 and AC.

One-step synthesis of needle-like CoO/C composite materials and their enhanced electrochemical performance for supercapacitor

Linna Huang,Chunyong Zhang,Haitao Liu,Lei Su,Jianning Li,Hengfei Qin

A needle-like CoO/C composite material was designed to enhance the capacitance performance of CoO via one-step hydrothermal strategy. The obtained CoO/C is applied as electrode material and shows a high specific capacitance, reaching 752 F/g which is outstanding characteristic compared with this of recently reported supercapacitor. The CoO supported on C could provide highly enhanced electrochemical performance and show promising energy storage application. CoO/C can be regarded as promising material for practical supercapacitor and this work also provides a valuable reference for the preparation and application of high performance electrode materials.

Ameliorative Effects of Luteolin and Activated Charcoal on Growth Performance, Immunity Function, and Antioxidant Capacity in Broiler Chickens Exposed to Deoxynivalenol

Mubashar Hassan,Yanan Wang,Shahid Ali Rajput,Aftab Shaukat,Ping Yang,Muhammad Zahid Farooq,Qianhui Cheng,Mehboob Ali,Xiaomei Mi,Yu An,Desheng Qi

Deoxynivalenol (DON, Vomitoxin) is a threatening mycotoxin that mainly produces oxidative stress and leads to hepatotoxicity in poultry. Antioxidant dietary supplements dramatically boost immunity, safeguarding animals from DON poisoning. Luteolin (LUT) is an active plant-derived compound that poses influential antioxidants. This study explored the effectiveness of LUT in combination with activated charcoal (AC) in detoxifying DON in broilers. The 180 one-day broiler chickens were allocated into five different groups having six replicates in each group, provided with ad libitum feed during the trial period (28 days) as follows: in the control group, basal diet (feed with no supplementation of LUT, AC or DON); in group 2, a basal diet added with 10 mg/kg DON from contaminated culture (DON); in group 3, a basal diet augmented by 350 mg/kg LUT and DON 10 mg/kg (DON + LUT); in group 4, a basal diet supplemented by DON 10 mg/kg + AC 200 mg/kg (DON + AC); and in group 5, a basal diet supplemented by 10 mg/kg DON + 350 mg/kg LUT + 200 mg/kg AC (DON + LUT + AC). Concerning the control group, the DON-treated broilers demonstrated a significant decrease in growth performance (p< 0.05) and serum immunoglobulin (p< 0.05) contents, negatively changing the serum biochemical contents and enzymatic activities and an increase in histopathological liver lesions. Furthermore, DON substantially increased (p< 0.05) malondialdehyde (MDA) concentration and decreased total superoxide dismutase (T-SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) levels in the serum and liver. The intake of AC and LUT to the DON-contaminated diet decreased DON residue in the liver and potentially reduced the adverse effects of DON. Considering the results, supplementation of LUT with mycotoxin adsorbent has protective effects against mycotoxicosis caused by DON. It could be helpful for the development of novel treatments to combat liver diseases in poultry birds. Our findings may provide important information for applying LUT and AC in poultry production.Keywords:deoxynivalenol;luteolin;activated charcoal;growth performance;antioxidant capacity;immunity;broilersKey Contributions:Supplementation of luteolin and activated charcoal for four weeks improve the immune system and antioxidant capacity and protects liver injury in broiler chickens against DON-induced toxicity.

One-step firmly anchor graphdiyne on NiCo-LDHs as supercapacitor electrode for considerable durability

Guiquan Liu,Guorong Wang,Zhiliang Jin

Nickel-based hydrotalcite has been widely used in supercapacitor electrodes due to its multivalence. Unfortunately, the poor stability and low conductivity for charge transfer impede further development in the field of energy storage. Herein, the graphdiyne (GDY) nanosheets were added to the growth process of nickel cobalt hydrotalcite (NiCo-LDHs), which to make up for these two deficiencies of NiCo-LDHs. Due to the strong combination of NiCo-LDHs and GDY, the specific capacitance of the obtained NiCo-LDHs@GDY reaches 1284 F g −1 (1.5 times than NiCo-LDHs) under a current density of 1 A g −1 with a rate performance of 72.08 % under the current density of 20 A g −1 . In addition, the NiCo-LDHs@GDY//AC Asymmetric Supercapacitor (ASC) assembled with activated carbon demonstrates an energy density of 23.06 Wh kg −1 at a high power density of 3108.96 W kg −1 . Rejoicingly, the charge storage capacity remains at 89.53 % after 5200 charge-discharge cycles under the current density of 10 A g −1 . These outcomes show that the NiCo-LDHs@GDY electrode material has remarkable application potential and can achieve better characteristics for high-performance supercapacitors in energy storage applications .

Cooperative Effect of Ni-Decorated Monolayer WS2, NiO, and AC on Improving the Flame Retardancy and Mechanical Property of Polypropylene Blends

Mingqiang Shao,Yiran Shi,Jiangtao Liu,Baoxia Xue,Mei Niu

Improving the residual char of polypropylene (PP) is difficult due to the preferential complete combustion. Here, we designed a combination catalyst that not only provides physical barrier effects, but also dramatically promotes catalytic charring activity. We successfully synthesized WS2monolayer sheets decorated with isolated Ni atoms that bond covalently to sulfur vacancies on the basal planes via thiourea. Subsequently, PP blends composed of 8 wt.% Ni-decorated WS2, NiO, and activated carbon (AC) were obtained (ENi-SWS2-AC-PP). Combining the physical barrier effects of WS2monolayer sheets with the excellent catalytic carbonization ability of theENi-SWS2-AC combination catalyst, the PP blends showed a remarkable improvement in flame retardancy, with the yield of residual char reaching as high as 41.6 wt.%. According to scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations, it was revealed that the microstructure of residual char contained a large number of carbon nanotubes. The production of a large amount of residual char not only reduced the release of pyrolytic products, but also formed a thermal shield preventing oxygen and heat transport. Compared to pure PP, the peak heat release rate (pHRR) and total heat release rate (THR) ofENi-SWS2-AC-PP were reduced by 46.32% and 26.03%, respectively. Furthermore, benefiting from the highly dispersed WS2, the tensile strength and Young’s modulus ofENi-SWS2-AC-PP showed similar values to pure PP, without sacrificing the toughness.Keywords:polypropylene;Ni-modified monolayer WS2;sulfur vacancy;activated carbon;NiO;carbon nanotubes;flame retardancy;mechanical properties