ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Xiaoxiao Cheng,Yun Tong
Hydrazine oxidation assisting water splitting is considered as a promising strategy toward the highly efficient and energy-saving hydrogen acquirement. However, the development of efficient and stable electrocatalysts for hydrazine hydrate oxidation (HzOR) as well as hydrogen evolution reaction (HER) still remains challenging. In this study, an interface-coupled Co(OH)2/MoS2 nanosheet array is designed to form a synergistic hierarchical heterostructure on a carbon cloth substrate, which is shown to have superior bifunctional performance for HzOR/HER under alkaline conditions. Benefiting from the abundant electrocatalytic active sites and improved reaction kinetics, the Co(OH)2/MoS2/CC electrode shows superior bifunctional performances with low potentials of −134 and 177 mV at 100 mA cm–2 for HER and HzOR, respectively. For the hydrazine-assisted overall water electrolyzer system (OHzS), the Co(OH)2/MoS2/CC electrode delivers low potentials of 142, 197, and 271 mV to realize 10, 50, and 100 mA cm–2, which proves the promising potential application in large-scale preparation of hydrogen fuel. This strategy put forward a simple way toward robust and economic electrodes for energy-related systems.
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高影响因子
POLYMER DEGRADATION AND STABILITY
·
2022
·
IF 5.204
Ji-nian Yang,Zhen-yu Li,Xue-song Feng,Shi-bin Nie
In the present study, a binary architecture of flower-like nickel phyllosilicate decorated using zinc sulfide nanoparticles (NiPS@ZnS) was constructed and introduced into epoxy resin (EP), yielding the robust, wear-resistant and thermal-stable nanocomposites. Several characterizations have been performed to confirm the synthesis of target NiPS@ZnS and explore its positive influence on the mechanical, tribological and thermal properties of EP nanocomposites. Based on the results, NiPS@ZnS could be dispersed homogeneously in the matrix without visible occurrences of debonding between interfaces, moderately improving the tensile strength and elastic modulus by 11.4% and 24.6%, respectively. The optimized tribological properties were achieved by adding 5% NiPS@ZnS and the wear rate could be reduced significantly down to 0.5×10 −5 mm 3 /Nm, which was ca . 93% lower than pure EP. Thermal degradation analysis implied that presented NiPS@ZnS improved the thermal stability, showing pronounced suppressed mass loss and elevated char residues, while kinetic analysis demonstrated the rarely changed reaction order and steadily decreased activation energy of EP along with the increased NiPS@ZnS. This investigation provided a facile way to prepare the robust, wear-resistant and thermal-stable EP-based tribo-materials.
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DESALINATION
·
2022
·
IF 11.211
Xiaoping Wang,Yanling Liu,Kaiming Fan,Peng Cheng,Huabiao Xia,Shengji Xia
The incompatibility between inorganic nanoparticles and polyamide matrix in thin film nanocomposite (TFN) nanofiltration membranes tends to generate defects in the selective layer and further sacrifice the membrane separation performance, which can be promisingly mitigated by modifying nanoparticles with hydrophilic functional groups. In this study, carboxyl group-grafted molybdenum disulfide (COOH-MoS 2 ) nanoparticles were prepared via organic functionalization grafting reaction and then incorporated into membrane polyamide layers. The resultant TFN membranes exhibited a rougher surface with unique globule structures, which greatly contributed to the enhancement of water permeance . The optimal membrane obtained at the COOH-MoS 2 depositing density of 50.0 μg/cm 2 exhibited a high Na 2 SO 4 rejection of 98.5 %, a low NaCl rejection of 23.8 %, and an excellent water permeance of 27.7 LMH/bar, which was 2.8 and 1.5 times higher than that of the control membrane (9.6 LMH/bar) and the original MoS 2 modified TFN membrane (18.4 LMH/bar), respectively. The more superior membrane performance enabled by COOH-MoS 2 was mainly due to the enhanced hydrophilicity of the nanoparticles, which effectively inhibited the piperazine monomer diffusion and resulted a thinner and properly looser selective layer. This work provides an effective strategy to improve the performance of TFN nanofiltration membranes via graft of proper functional groups on nanomaterials .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Meijuan Tong,Bo Cao,Yong Li,Liping Chen,Yonghong Fu
Sodium-ion batteries (SIBs) is a promising alternative for lithium-ion batteries (LIBs) due to abundant resources and low cost. Herein, a series of composites, CDC/SbSxx (xx means weight content of Sb 2 S 3 ), composed from catkin derived carbon (CDC) material, possessing tube-like morphology, and Sb 2 S 3 fine particles prepared by solvothermal method were selected as anodes for SIBs. The electrochemical property results demonstrated that the CDC/SbSxx electrodes afforded improved cycling stability and enhanced rate performance due to the higher Sb 2 S 3 particle retention ability and improved electric conductivity . Furthermore, the content of Sb 2 S 3 played in important role in electrochemical performance. The CDC/SbS15 composite electrode accommodated a higher Sb 2 S 3 content (16.8 wt%) and exhibited improved discharge capacity and excellent cycling performance even at a high current density. Given the cost effectiveness and material sustainability, this work provides a potential strategy to develop low-cost and sustainable composite anode for advanced SIBs.
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高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Xiaoman Li,Xiaolan Guo,Jiliang Niu,Jialiang Lin,Jianhua Cheng,Yongyou Hu,Yuancai Chen,Weiqiu Wen
The accumulation of antibiotics in the environment has caused worldwide concern and photocatalytic processes have shown attractive prospects for the elimination of antibiotics due to its sustainability, cleanliness and efficiency. In this study, a series of self-assembled hollow tubular Zn–In–S photocatalysts (Zn-doped In 2 S 3 , ZnIn 2 S 4 , and ZnS/ZnIn 2 S 4 ) were first designed by one-step sulfidation of Zn/In-MOFs. The as-synthesized microtubular structured Zn–In–S exhibited high surface area(107.61–127.26 m 2 /g), high porosity(0.25–0.52 cm 3 g −1 ) and high degradation rate(≥86%) towards tetracycline within 120 min. Moreover, the photoelectric properties and photocatalytic performance were dependent on the existence of Zn species. Particularly, the optimized hollow microtubular ZnS/ZnIn 2 S 4 composites exhibited ultrahigh photocatalytic degradation rate (>90%) within 1 h solar light irradiation. The kinetic constant reached 0.0379 min −1 , which was 2.96, 2.02, and 5.65 times higher than In 2 S 3 , ZnIn 2 S 4 , and ZnS respectively. The ultrahigh photocatalytic degradation efficiency originated from the formation of direct Z scheme heterojunction between ZnIn 2 S 4 and ZnS. The unique heterojunction enabled the effective separation of electron-hole pairs and the production of highly reactive oxidants (•OH, •O 2 − , h + ). Density functional theory(DFT) demonstrated a higher charge density near the Fermi level and higher affinity towards O 2 molecules, which contributed to the efficient interfacial charge mobility and O 2 activation. The work provides guidance for the modulation of ternary catalysts to maximize the virtues of photocatalytic activity .
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Zhenggang Jia,Xuexi Zhang,Mingfang Qian,Siyao Ma,Yingmin Jin,Yueping Xiong
The shuttling of polysulfide intermediates and volume distortion during cycling make it challenging for the applications of MoS 2 at high current densities without capacity fading. In order to improve the cycle life and rate capability of lithium-ion batteries, introducing a porous matrix is a viable strategy. Here, MoS 2 with 3D porous graphene prepared by low-temperature hydrothermal (160 °C) and low-energy ultrasound-assisted (40 W for 120 s) methods shows no impurities, large layer thickness (0.94 nm, 54 % increase) and no bare MoS 2 , resulting in smaller volume expansion (34 % in Li 4 MoS 2 ), higher lithium stability (0.66 eV of adsorption energy) and more convenient ion transport channels. The first-principles calculations show that more lithium can be inserted without destroying the layered structure by forming a lithium metal layer between the MoS 2 layers. The encapsulation of graphene not only hinders the shuttle effect of sulfur, but also improves the adsorption energy of lithium atoms in the electrode. In addition, electrochemical analysis shows that the clear drop in charge transfer resistance (Rct) in the first 300 cycles also indicates the improvement of the reaction pathway by graphene. As a result, the as-prepared rGO/MoS 2 still maintains a specific capacity of 1008 mAh·g −1 with a very low capacity decay rate (0.03 % per cycle) at a current density of 1 A·g −1 after 500 cycles as an electrode material for lithium-ion batteries.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
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IF 4.598
Gaozhi Ou,Anshun Zhao,Hui Liao,Zhaowei Zhang,Fei Xiao
Aflatoxin in food is a significant concern that threatens human health and life and causes a heavy burden on international trade and healthcare. In this work, we developed a new type of label-free electrochemical immunosensor for the high-sensitivity determination of aflatoxin B1 (AFB1) based on Au nanoparticles decorated urchin-like Bi 2 S 3 (Au/Bi 2 S 3 ) anchored on electrochemically reduced graphene oxide (ERGO) modified carbon fiber (CF) microelectrode (Au/Bi 2 S 3 /ERGO/CF). The morphology and characterization of the modified microelectrode were investigated using scanning electron microscopy (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV). Under the optimum conditions, the label-free electrochemical immunosensor detected AFB1 within the linear range of 10 pg mL −1 to 20 ng mL −1 , with a low detection limit of 8 pg mL −1 and high sensitivity (0.48 μA/ng mL). The immunosensor showed high selectivity, good reproducibility, and acceptable stability. The immunosensor was applied to detecting AFB1 in cornflour samples, offering excellent reliability and accuracy compared with typical detection methods. Finally, this platform provides a superior prospect for the development of a nanohybrid immunosensor.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Ruiming Chen,Tingting Hu,Shu Xing,Tao Wei,Jianbin Chen,Tianduo Li,Qingfen Niu,Zhengyang Zhang,Huijun Ren,Xiaoxu Qin
Hydrazine (N 2 H 4 ) and hypochlorite (ClO − ) are extremely harmful to the public health, so it is vitally necessary to detect them in living system. Herein, we developed a new phenthiazine-thiobarbituric acid based dual-analyte responsive fluorescent sensor PT for visually distinguishing and detecting N 2 H 4 and ClO − . PT underwent N 2 H 4 /ClO − -induced C C breakage, achieving olive-drab/brilliant green fluorescence lighting-up response towards N 2 H 4 /ClO − with superb specifity, ultra-sensitivity (detection limit: 15.4 nM for N 2 H 4 , 13.7 nM for ClO − ), and ultra-fast response (N 2 H 4 : <15 s, ClO − : <20 s). The mechanisms for sensing N 2 H 4 and ClO − were investigated with support of spectral measurements and DFT investigation. Sensor based paper-strip/silica-gel device was developed for in-field supervision and on-site monitoring of gaseous and aqueous N 2 H 4 and ClO − solution. In addition, the PT was also applied for quantitatively detecting N 2 H 4 and ClO − in soil, food, plants and bio-fluids. Moreover, PT was utilized to visualize exogenous N 2 H 4 and ClO − in living plants and live-cells, demonstrating this sensor utilized as a powerful tool to detect N 2 H 4 and ClO − in biological fields.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
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IF 8.2
Bingjie Huo,Jingxue Wang,Zichen Wang,Chao Liu,Wenjing Hao,Yinglong Wang,Peizhe Cui,Jianguang Qi,Jun Gao,Jingwei Yang,Fanqing Meng
Wood is a natural material with low cost and easy recovery, which porous, layered, excellent structure and mechanical properties make it possible to apply in wastewater treatment. We have successfully grown MoS 2 on natural wood containing porous cellulose and introduced the high conductivity circuit path provided by Ni nanoparticles to construct a new piezoelectric three-dimensional wood block for the efficient degradation of tetracycline. Ni/MoS 2 /Wood exhibited excellent piezo-catalytic degradation performance, and the degradation rate of tetracycline reached 95.96 % (k = 0.0411 min −1 ) under ultrasonic vibration. After 5 cycles, the degradation rate still reached 90.20 %. In addition, Ni/MoS 2 /Wood was used as the reactor filler to degrade tetracycline through piezoelectric response triggered by hydrodynamic force, and the degradation rate reached 90.27 % after 60 min. Further, the mechanism and the possible degradation pathways of tetracycline degradation were proposed. This low-cost, recyclable and stable three-dimensional wood block piezoelectric material provides a new idea for the practical application of wastewater treatment.
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Acta Metallurgica Sinica-English Letters
·
2023
·Vol. 36
·期 6
·1023-1037
·
IF 3.5
Fan Wenhao,Zhao Jianxun,Liu Dayong,Liang Qingcheng,Liu Wanqiang,Wang Qingshuang,Liu Heng,Chen Peng,Gao Shang,Bao Xinlong,Cheng Yong,Wang Xinwei,Guo Xin
Co 0.9 Cu 0.1 Si alloy was prepared by mechanical alloying method. Nitrogen-doped graphene (NG) and nitrogen–sulfur co-doped graphene (NSG) were prepared by hydrothermal method. 5 wt% graphene oxide, NG and NSG were doped into Co 0.9 Cu 0.1 Si alloy, respectively, by ball milling to improve the electrochemical hydrogen storage performance of the composite material. X-ray diffraction and scanning electron microscopy were used to characterize the structure and morphology of the composite material, and the LAND battery test system and three-electrode battery system were used to test the electrochemical performance of the composite material. The composite material showed better discharge capacity and better cycle stability than the pristine alloy. In addition, in order to study the optimal ratio of NSG, 3%, 5%, 7% and 10% of NSG were doped into Co 0.9 Cu 0.1 Si alloy, respectively. Co 0.9 Cu 0.1 Si alloy doped with 5% NSG had the best performance among all the samples. The best discharge capacity was 580.1 mAh/g, and its highest capacity retention rate was 64.1%. The improvement in electrochemical hydrogen storage performance can be attributed to two aspects. On the one hand, the electrocatalytic performance of graphene is improved by co-doping nitrogen and sulfur, on the other hand, graphene has excellent electrical conductivity.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Jiajun Li,Junyu Yang,Peiru Wang,Ziyang Cong,Feiyan Shi,Li Wei,Kai Wang,Yao Tong
Metal sulfides with the nature of low electronegativity and high electrochemical activity are potentially considered effective electrode materials for supercapacitors. Meanwhile, hierarchical porous carbon (HPC) materials derived from eco-friendly enzymatic hydrolysis lignin are the ideal matrix for holding nanoparticles (NP) that allows the overall NP/HPC composite to achieve outstanding electrochemical performance. In this study, NiCo 2 S 4 nanoparticles were in-situ synthesized on the inner surface of 3D HPC that derived from enzymatic hydrolysis lignin with a simple one-step solvothermal method, thus forming a high-performance composite electrode material for supercapacitor applications. As a result, the NiCo 2 S 4 /HPC composite yields an outstanding specific capacity of 1264.2 F g −1 at 1 A g −1 and also exhibits remarkable rate performance. Such remarkable property is attributed to the effective combination of NiCo 2 S 4 plus HPC and their strong chemical bonds, which enable excellent electronic conductivity and abundant exposed electroactive sites. The asymmetric supercapacitor assembled by utilizing NiCo 2 S 4 /HPC and active carbon as the positive and negative electrodes, respectively, provide an excellent energy density of 32.05 Wh kg −1 at a power density of 193.9 W kg −1 . This work puts forward a practical optimization strategy for metal sulfides used in electrochemical energy storage devices.
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RSC Advances
·
2022
·Vol. 13
·期 1
·335-343
·
IF 4.036
Xinxu Wang,Chenghan Wang,Yichen Xu,Yuxin Li,Haotian Li,Bingjun Fan,Fan Yang,Liping Li
Cancer has been regarded as one of the most intractable diseases worldwide and threatens human health and life. Photothermal/Photodynamic therapy (PTT and PDT) have emerged as reliable and effective strategies in cancer treatment with the superiorities of non-invasiveness, slight side effects, and high treatment efficiency. Herein, a nanocomposite (PBCN) was fabricated via electrostatic interaction between Prussian blue nanoparticles (PBNPs) and graphitic carbon nitride (g-C3N4), and the resulting PBCN possessed good photothermal properties and excellent photodynamic effects with 808 nm irradiation. Furthermore, it exhibits excellent fluorescence imaging ability in cells, highlighting its potential as a powerful imaging agent in the biomedical field. Combination with a photothermal material, photosensitizer, and fluorescence imaging agent would thus allow PBCN to realize fluorescence imaging-guided PTT/PDT, showing an outstanding theranostic effect on cancer cells.
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