ELECTROANALYSIS
·
2023
·Vol. 36
·期 4
·e202300371
·
IF 3
Wenjing Liu,Sumin Xu,Jinjin Zhang,Qi Wang,Jianying Qu
In this work, manganese-based metal-organic frameworks (MnBDC) were synthesized by solvothermal method and physically mixed with pre-prepared graphene oxide (GO) to obtain GO/MnBDC, which were calcined to give MnO@C composite coated with reduced graphene oxide (rGO) marked as rGO/MnO@C. The materials were characterized by SEM, XRD, FTIR and XPS. Based on this composite, a novel sensor was constructed on a glassy carbon substrate, which exhibited good electrocatalytic activities to the redox reactions of catechol (CC) and hydroquinone (HQ), enabling simultaneous detection of both analytes. Under optimized conditions, the electrochemical sensor demonstrated a linear range of 0.50–90.00 μM for both CC and HQ detection, with respective detection limits of 0.05 μM and 0.03 μM. Moreover, the sensor exhibited excellent sensitivity, selectivity and accuracy for detecting CC and HQ simultaneous in real samples.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zewen Yang,Dandan Jia,Yue Wu,Depeng Song,Xiaolin Sun,Cheng Wang,Li Yang,Yuan Zhang,Jing Gao,Takeo Ohsaka,Futoshi Matsumoto,Jianfei Wu,Qiang Shen
Lithium-sulfur (Li-S) batteries exhibit a high specific capacity (1675 mAh g −1 ) but poor S conductivity and severe shuttle effects. Selenium (Se) can greatly mitigate these disadvantages, but its theoretical capacity is relatively low (675 mAh g −1 ). A series of S x -Se y compounds supported by chitosan-derived carbon with intertwined carbon nanotube (CC + CNT) carriers exhibit the high capacity of S, the stability of Se, and the excellent conductivity of C, complementing their individual defects. S 2 Se 1 /CC + CNT shows the best electrochemical performance (833.2 mAh g −1 after 500 cycles). Characterization results reveal the structure–activity relationships and complex reaction mechanisms of the prepared electrode materials. The overall reactions are a combination of basic Li-S and Li-Se reactions. The discharge steps are clearly identifiable, while the reaction sequences are slightly adjusted and fully integrated when charging. This work provides a foundation for future research and for the practical application of chalcogenides in lithium-metal batteries.
✓ 已验证
DOI
高影响因子
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
·
2016
·Vol. 33
·期 7
·388-395
·
IF 4.367
Wenbin Wang,Liqiang Liu,Liguang Xu,Hua Kuang,Jianping Zhu,Chuanlai Xu
Staphylococcal enterotoxins (SEs) in food samples can cause severe gastroenteritis even at low doses. Detection of SEs with a single assay would not only improve reliability and portability, but would also save time. In this paper, for the first time, a multiplexed gold-nanoparticle-based immunochromatographic (ICT) strip that allows the simultaneous detection of the five main SEs has been reported: SEA, SEB, SEC, SED, and SEE. Based on the sandwich immunoassay of each SE, a multiplexed ICT strip with five test lines is developed. Sensitive and specific paired monoclonal antibodies facilitate the detection, allowing for high sensitivity and good specificity. The portable biosensor platform can simultaneously detect SEA, SEB, SEC, SED, and SEE at concentrations as low as 2.5, 2.5, 2.5, 1, and 5 ng mL −1 , respectively. The entire test can be performed within 15 min and requires no sophisticated instruments except a portable strip reader. To evaluate the multiplexed strip, naturally SEA and SEC contaminated milk samples and pure milk samples spiked with the five SEs are analyzed.
✓ 已验证
DOI
高影响因子
TRANSACTIONS OF TIANJIN UNIVERSITY
·
2023
·Vol. 29
·期 6
·453-461
·
IF 7.1
Qiu Wenhao,Han Qing,Yu Xiaogang,Xiang Zhonghua
Developing nonprecious metal-nitrogen-doped carbon (M–N–C) catalysts with high activity and stability is critical to their widespread use in fuel cells; however, these catalysts still face considerable challenges. Herein, a novel iron atom-cluster strategy for the synthesis of iron-based N–C catalyst comprising Fe nanoparticles (Fe NPs) surrounded by Fe-N x sites is developed for oxygen reduction reactions in an acidic fuel cell. Iron oxide NPs were incorporated into zeolitic imidazolate framework-8 (ZIF-8)-derived carbon materials and pyrolyzed at high temperatures using NaCl as a modifier to produce Fe NPs and Fe-N x composite active sites. The half-wave potential of the optimized Fe NP /FeNC-NaCl material was substantially improved to 0.81 V. Furthermore, even after 15,000 cycles, the half-wave potential of the catalyst remained essentially unchanged. As a cathode catalyst for fuel cells, it realized a high peak power density of 436 mW/cm 2 under a practical H 2 -air atmosphere. Therefore, this study presents a new approach for designing and synthesizing electrocatalytic materials with high catalytic activity and stability.
✓ 已验证
DOI
高影响因子
JOURNAL OF SUPERCRITICAL FLUIDS
·
2019
·
IF 3.481
Lei Bao,Yang Chen,Liru Ma,Dongdong Hu,Yuan Zong,Ling Zhao,Weikang Yuan,Tao Liu
Three nonfluorinated co-surfactants, sodium bis (2-(isopropoxy)-ethanol) sulfonate (di-IOESS), sodium bis (3,5,5-trimethyl-hexanol) sulfonate (di-TMHSS) and sodium bis (2-(pivaloyloxy)-ethanol) sulfonate (di-POESS) were synthesized to replace partial sodium bis (3,3,4,4,5,5,6,6,6-nonafluoro-hexanol) sulfonate (4FS(EO) 2 ) to stabilize W/C microemulsions to decrease the fluorine content. The results showed that the stabilization ability of the co-surfactants at less than 55 °C was in the following order: di-TMHSS > di-POESS > di-IOESS. Results for MD simulations proved that the co-surfactants mainly changed the packing efficiency of the surfactant short chains. The flexible co-surfactant tails could maintain the bending fraction of the surfactant short tail at a low level and the appropriate length of co-surfactant tails helped to occupy more volume at the interface. Therefore, the nonfluorinated co-surfactants with flexible branched tails in an appropriate length relatively to the surfactant tails were conducive to replace partial fluorinated surfactants, which may help for designing nonfluorinated co-surfactants to decrease the fluorine content in W/C microemulsions.
✓ 已验证
DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Xianyu Liu,Tayyaba Najam,Ghulam Yasin,Mohan Kumar,Miao Wang
Herein, we successfully synthesized two novel metal thiophosphites (MTPs) hybridized with carbon, that is, NiPS3/C and SnPS3/C composites, via an environment-friendly and cost-effective approach without harsh reaction conditions. Subsequently, the electrochemical performances of NiPS3/C and SnPS3/C composites have been investigated in coin-cells, and it is revealed that MTPs/C have a significantly higher Li-storage capacity and better stability compared to the MTPs without carbon. Moreover, the SnPS3/C electrode shows a lower internal resistance and a better rate performance compared to NiPS3/C. We employed extensive ex situ experiments to characterize the materials and interpreted the remarkably improved performance of MTPs/C.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xin Ren,Zhenfei Li,Jingrui Cao,Shiyu Tian,Kaicheng Zhang,Jianling Guo,Lizhi Wen,Guangchuan Liang
Mortar-like LiFePO 4 /C composites are synthesized by a ball milling-spray drying-carbothermal reduction method using polyethylene glycol (PEG) as the organic carbon source, dispersant , and reductive agent, while the carbon aerogel as the excellent conductive network. PEG enables the carbon aerogel to uniformly coat the primary particles, which restricts the overgrowth of primary particles' during the synthesis process. While the carbon aerogel provides a three-dimensional conductive network, and its porous structure can absorb more electrolyte. Moreover, the mortar-like secondary particles could further increase the specific surface of LiFePO 4 /C composites. The high speed of electron transfer and lithium-ion transportation can be achieved simultaneously for the Mortar-like LiFePO 4 /C composites. All these factors contribute to the outstanding rate performance (163.4 mAh g -1 at 0.2 C and 115.4 mAh g -1 at 15 C) and considerable cycling stability (99.3% of capacity retention after 300 cycles at 5 C/5 C). The Mortar-like LiFePO4/C composites combined with the evenly coated carbon aerogel are promising cathode materials for rechargeable lithium-ion power batteries.
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Hong Li,Qiulan Li,Qiao Shi,Yijie Wang,Xiuwei Liu,Hao Tian,Xinrui Wang,Dezhi Yang,Yaling Yang
Single-atom nanozymes (SAzymes) show distinct advantages in catalytic activity and selectivity owing to their stability and special characteristic of maximum atomic utilization. Inspired by the structure of natural horseradish peroxidase (HRP), we developed a simple method for specific determination of both propyl gallate (PG) and formaldehyde (HCHO) by utilizing the intrinsic peroxidase mimics activity of hemin (hem) loaded Zn–nitrogen–carbon single-atom nanozymes (Zn–N–C@hem SAzymes). Zn–N–C@hem was prepared via a salt-template strategy and self-assembly, where hemin exhibits enhancing peroxidase-like activity can catalyze oxidation of colorless PG to yellow product. Upon introduction of HCHO into Zn–N–C@hem/PG system, complete suppression of PG oxidation was showed, resulting in distinguished decrease in absorbance. The colorimetric sensors of PG and HCHO based on Zn–N–C@hem/PG were developed at their respective linear range of concentration 1.25–200 mg/kg and 5–250 mg/kg. The practicability of the rapid analysis of PG and HCHO in food samples has been verified with reliable results.
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL SCIENCES
·
2024
·Vol. 136
·期 3
·1-11
·
IF 1.7
Zhao Zhicai
A series of 1-carbonyl-1 H -indoles were prepared by 2-iodoanilines and calcium carbide in a one-pot reaction catalyzed by recyclable10% Pb/C, resulting in the corresponding substituted indoles in good yields. This protocol offers several advantages, including the utilization of sustainable, low-cost calcium carbide, an easy-to-handle acetylene source, and recyclable Pb/C catalysts. Graphic abstract The synthesis of a series of 1-carbonyl-1 H -indoles were prepared by 2-iodoanilines and calcium carbide in a one-pot reaction catalyzed by 10% Pb/C, resulting in the corresponding substituted indoles in good yields. This protocol offers several advantages, including the utilization of sustainable, low-cost feedstock, an easy-to-handle acetylene source, and recyclable Pb/C catalysts.
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Wenjie Zhao,Weigang Wang,Guorong Hu,Ke Du,Zhongdong Peng,Xudong Zhang,Huan Li,Zijun Fang,Yanbing Cao
Porous Na 3 V 2 (PO 4 ) 2 F 3 (NVPF) with micro-nano structure was prepared by a simple deep-eutectic solvent method with good crystallinity and uniformity. Surface modification was used to produce carbon-coated NVPF (NVPF/C). The unique morphologic architecture and surface modification improve the structural stability and interfacial chemical stability of NVPF, ensuring the excellent rate performance and cycle stability of NVPF/C. At 120 °C, secondary microspheres NVPF composed of nanoparticles are successfully synthesized. By liquid phase reaction in a deep-eutectic solvent X-ray diffraction analysis reveals that these microspheres have good crystallinity . The NVPF/C with an amorphous fluorocarbon coating layer is constructed by pyrolysis of polytetrafluoroethylene (PTFE). The mesoporous structure and the existence of the coating layer are clearly obvious under the high-definition transmission electron microscope. The amorphous fluorocarbon layer enhances the reversibility and transmission ability of Na + , improving the electrochemical kinetics. And the obtained NVPF/C cathode material displays high-rate performance. The as-prepared NVPF/C-F composites with 6 %wt coating of PTFE have a specific capacity of 110.6 mAh g −1 at 10 C, 106.4 mAh g −1 at 20 C and 94.6 mAh g −1 at 50 C. The capacity retention rate is 90.4 % after 700 cycles at 20 C. This research provides a facile and inexpensive approach for getting high-rate performance sodium-ion battery cathode materials.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Haitao Wang,Yan Zheng,Wenyu Cui,Yanchun Sun,Dongxing Zhang
Core–shell shaped composites with tunable core compositions have been successfully synthesized by a two-step method. Initial, SnO 2 @C was prepared by fixing the hollow SnO 2 nanospheres into the void of amorphous carbon. Followed by another annealing treatment, SnO 2 was gradually reduced to metallic Sn in a mixed H 2 /N 2 atmosphere and leaded to Sn/SnO 2 or Sn cores. Subsequently, the original SnO 2 hollow nanospheres in the core was collapsed and transformed from clusters to nanoparticles. The electromagnetic absorption properties were significant improved for the binary composite (Sn/SnO 2 @C) as compared to SnO 2 hollow sphere, SnO 2 @C and Sn@C products. The effective absorption frequency width was up to 7.1 GHz with a matched thickness of 1.5 mm. The excellent electromagnetic absorption mechanism was attributed to the balanced impedance matching and attenuation ability. Besides, the existed Sn/SnO 2 interface plays a key role on the attenuation intensity since the boosted interface polarization intensity.
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Siyue Zhang,Hui Cheng,Baoli Wang,Fan Shi,Lijun Yan,Lina Zeng,Lin Li,Shuhai He,Wei Sun
Petal-shaped FeS@MoS 2 -C nanocomposite was synthesized using carbon fiber as the basic carrier by hydrothermal method. The uniformly dispersed nanocomposite, hemoglobin (Hb) and Nafion mixture were drip-coated on the newly prepared carbon ionic liquid electrode (CILE) to build a modified electrode named as Nafion/Hb/FeS@MoS 2 -C/CILE. The morphology and valence state of FeS@MoS 2 -C nanocomposite was investigated by SEM, TEM, XPS etc. and the biological structure of Hb was not changed based on UV-VIS and FT-IR spectroscopic analysis. Electrochemistry of Nafion/Hb/FeS@MoS 2 -C/CILE was recorded by cyclic voltammetry with voltammetric behaviors investigated. Also, the modified electrode has excellent catalytic performance for nitrite, hydrogen peroxide, bromate with the detection range as 0.10~5.00 mmol L -1 , 0.10~14.00 mmol L -1 , 0.05~25.00 mmol L -1 , respectively. The pickle juice sample was analyzed by this method satisfactory, further proving the practical application.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）