JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2024
·Vol. 171
·期 10
·107506
·
IF 3.1
Chen-Yang Han,Kun-Zhi Wang,Xin Chen,Zhencheng Chen,Guo-Cheng Han,Xiao-Zhen Feng,Heinz-Bernhard Kraatz
Hydrogen peroxide (H2O2) possesses disinfectant, antiseptic, deodorizing, and cleansing properties. It is commonly used to clean wounds, ulcers, abscessed sinuses, and pus in the ear. Herein, a colorimetric-electrochemical bimodal method for the detection of hydrogen peroxide in serum was constructed, when using a platinum sheet electrode electrocatalyzes H2O2 producing hydroxyl radical, resulting in oxidising TMB and giving a color and current change. After optimaztion, cyclic voltammetry, differential pulse voltammetry and ultraviolet spectrophotometry constituting a colorimetric-electrochemical bimodal method were used to establish four linear relationships within the concentration range of 10.00–1000.00 μM. The limit of detection was found to be 3.33 μM. Additionally, the method's recoveries ranged from 98.88% to 101.10% with a relative standard deviation of no more than 3.70% when using the standard addition method in serum, which indicates its potential for practical medical testing.
研究领域:
分析化学
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医学检测
·
生物化学
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 6
·060535
·
IF 3.1
Tianzi Liang,Yagang Yang,Hanqing Dong,Kai Yu,Qiushi Song,Zhiqiang Ning,Hongwei Xie
A simple synthesis for the Ti3+-doped, small Li4Ti5O12 is favorable for its application as an anode material of lithium-ion batteries. This study presents a direct synthesis method of high-performance Li4Ti5O12 (LTO-Ti) with the Ti3+ self-doped and uniformly small in size. It is carried out by the redox of an electrochemical electrode pair of Ti and Fe2O3 at a constant potential in molten KCl-LiCl salt with Li2CO3. The synthesis mechanism and the effect of synthesis conditions on the formation and properties of LTO-Ti were investigated in detail. The LTO-Ti with an average size of approximately 400 nm is prepared by the ionic level synthesis method, and exhibits a superior specific capacity of 130.5 mAh·g−1 at 10 C current density, which is 73.6% of its average specific capacity at 1 C. Moreover, it also shows good cycling stability with a specific capacity of 127.2 mAh·g−1 after 1000 cycles at 5 C (capacity retention of 96.9%). This synthesis is secure and prospective.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 7
·073505
·
IF 4.386
Su Yao,Jinxiao Du,Jieting Xiang,Shoulian Wei,Yanqing Liu,Hongwu Wang
A high voltage sonoelectrochemical method was proposed for the preparation of highly oxidized carbon nanosheets (hoCNSs) with good hydrophilicity and excellent electrocatalytic property for various compounds. It was found that the high electrolytic voltage played an important role in the hoCNSs' fragmentary appearance and excellent electrocatalytic property. The ultrasonic power further obviously improved the electrolytic efficiency. The very low concentration of electrolyte leads to a very simple post-treatment process. So this facile, low-cost and environmentally friendly method had great utility value for the preparation of hoCNSs.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Huijuan Ying,Pengzi Guo,Jiawei Shen,Xudong Zhang,Yi Wei
Given the substantial health hazards linked to hexavalent chromium Cr(VI), the utilization of bamboo-based activated carbon (BAC) prepared through molten salt electrochemical technology enables effective adsorption of Cr(VI), thereby mitigating environmental pollution. The effects of reaction temperature, reaction time, and current density on the yield of activated carbon and iodine adsorption value were initially investigated. Under the optimal reaction conditions, BAC exhibited a substantial pore structure, with a specific surface area of 1280.39 m 2 /g and an iodine adsorption value of 1270.8 mg/g. The activated carbon demonstrated effective removal of Cr(VI) in wastewater with a high adsorption capacity of 185.68 mg/g for an initial concentration of 200 mg/L, achieving a removal rate of 92.84 %. In the preparation process, electrolysis enhanced the molten salt pyrolysis and activation, promoting the formation of mesopores, while also generating activated gases inside activated carbon through decarboxylation and oxidation reactions of carbonate ions, facilitating the formation of micropores and enhancing the rate of gas activation. Research on recycling has shown that the removal efficiency of Cr(VI) using activated carbon recovered from molten salt electrochemical systems reached 97.92 %. Further reactions could be carried out to obtain metallic chromium, enabling the resourceful utilization of chromium.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ACS ES&T Engineering
·
2025
·
IF 6.7
Shan Liu,Xiang-Yang Lou,Wenjun Shi,Peiwen Liu,Xiaosong Gu,Xuezhen Feng,Songhe Yang,Yangzi Shangguan,Hao Fan,Huiling Zhou,Qi Yue,Zhouguang Lu,Hong Chen
As an essential and eutrophication element, aquatic phosphorus (P) must be fine-controlled for both environmental protection and resource recovery. Traditional P recovery heavily relies on adsorption and precipitation. Herein, we report a sustainable electrochemical Faradaic process for efficient phosphate recovery from phosphogypsum (PG) leachate, yielding high-purity Fe3(PO4)2·8H2O, a valuable precursor for lithium-ion battery (LIB) cathodes. Leveraging the low solubility of Fe3(PO4)2·8H2O (pKsp ≈ 36) and stringent control of dissolved oxygen (DO) levels and pH (below 9), a P recovery efficiency of up to 99.3% with high selectivity has been achieved from undiluted leachate with an iron sacrificial anode. The residue P concentration down to 3.9 mg/L in effluent meets the discharge standards of China’s Emission Standards for Water Pollutants in the phosphate fertilizer industry (total phosphorus <10 mg/L). The recovered Fe3(PO4)2·8H2O is used to fabricate the LiFePO4/C electrode for LIB application via a solid-state chemistry synthesis process, which exhibits a high discharge capacity (52.36–56.88 mAh/g), demonstrating the high-quality and potential of resource utilization of the recovered phosphate material for LIB cathode fabrication. This work demonstrates a novel, high-value pathway for sustainable phosphate recovery from PG leachate, promoting P resource management through a “waste-to-resource” strategy.
研究领域:
环境科学
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材料科学
·
能源技术
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产品关联
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2023
·
IF 7.8
Yongsheng Jia,Donghang Chen,Zhongyu Jiang,Xiaolong Wang,Zhaoyu Zhou,Long Zhao,Limin Guo
The conversion of CO 2 into activated carbon (AC) for the adsorption of volatile organic compounds (VOCs) is a green strategy to treat waste by waste. In this study, CO 2 was converted into a series of mesopore-enriched AC (MS-AC 500 , MS-AC 550 , and MS-AC 600 ) by molten salt (MS) electrochemical method under different temperatures, and the prepared adsorbents were employed for the rapid adsorption of VOCs. The results showed that MS-AC 500 , MS-AC 550 , and MS-AC 600 had a rich internal pore structure with specific surface area and pore volume of 816.70, 1062.05, 1255.50 m 2 /g and 0.58, 0.73, 0.84 cm 3 /g, respectively. The pore structures and surface chemistry of the adsorbents were positively correlated with the adsorption capacity , the adsorption amounts of MS-AC 500 , MS-AC 550 , and MS-AC 600 were 244.89, 306.38, 414.39 mg/g for toluene and 279.29, 366.19, 460.10 mg/g for chlorobenzene , respectively. The superior adsorption capacity for chlorobenzene is mainly because chlorobenzene is a polar molecule and the C-O bonds inside the adsorbents have an attractive effect on the unpaired electrons inside the polar molecule. Simulation of the adsorption process of the adsorbents confirmed that the adsorption of both toluene and chlorobenzene was a physical adsorption process. Moreover, the adsorption-desorption cycle of chlorobenzene was more stable than that of toluene, and the durability of the adsorbent was above 95% after 5 cycles. This study can remove VOCs while reducing CO 2 greenhouse gas, providing a feasible green route to treat waste by waste.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Su Yao,Gongke Li,Yanqing Liu,Shoulian Wei,Hongwu Wang,Xiqing Huang,Zetao Luo
In this paper, highly-oxidized carbon nanosheets (hCNSs) was prepared with a very simple and low cost sonoelectrochemical method. Compared with the electrochemical method without ultrasonic irradiation, the hCNSs which obtained with ultrasonic irradiation exhibited different ratio of oxygen-containing groups and better electrocatalytic property. The electrochemical behaviour and the electrooxidation mechanism of pyridoxal on the hCNSs modified electrode were investigated in detail. Compare to it on the glassy carbon electrode, the peak current of pyridoxal on the hCNSs modified electrode showed 64-folds enhancement. So a sensitive differential pulse voltammetry method based on the hCNSs modified electrode was proposed for the determination of pyridoxal. Its linear range was 2 × 10 −8 –1 × 10 -6 mol L -1 and the detection limit was 5.4 × 10 -9 mol L -1 . The method has been applied to the analysis of pyridoxal in the urine and plasma sample.
研究领域:
分析化学
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电化学
·
生物医学分析
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 2
·1-8
·
IF 5.479
Cheng Ting,Li Xiang,Huang Peng,Wang Han,Wang Meixia,Yang Wenming
An electrochemical and colorimetric dual-readout method is described for the determination of thrombin. A platinum nanoparticle (Pt NP) modified metal organic framework (MOF) acts as a peroxidase (POx) mimic that causes the formation of a blue product from 3,3′,5,5′-tetramethylbenzidine (TMB) and hydrogen peroxide, with an absorption maximum at 650 nm. In addition, gold nanoparticles enrich initiators that trigger the hybridization chain reaction for dual signal amplification to generate an electrochemical current typically measured at 0.31 V (from −0.5 to −0.1 V) and allow quantitation of thrombin with high sensitivity and over a wide detection range. The colorimetric and electrochemical (dual) thrombin assay produces two kinds of signals which warrants accuracy, diversity, and an option for visual inspection. The dual-channel sensor allows for the quantitative determination of thrombin with a low detection limit (0.33 fM) for the electrochemical method and 0.17 pM for the colorimetric method) and over a wide detection range (1 fM to 10 nM for electrochemical method and 0.5 pM to 1 nM for colorimetric method). The electrochemical detection limit is lower than that of colorimetry, and the linear range is wider, which is more suitable for further quantitative analysis of the target.
Schematic representation of a colorimetric and electrochemical (dual) thrombin assay based on the use of a platinum nanoparticle modified metal-organic framework for color development and hybridization chain reaction for electrochemical signal. C-TBA: complementary sequences of thrombin aptamer, TBA: thrombin aptamer, I-Au NPs: initiators enriched by gold nanoparticles, S-AuE: sensing gold electrode, RS-AuE: reacted sensing gold electrode, TB: thrombin, MB: Methylene Blue, HCR: hybridization chain reaction.
研究领域:
分析化学
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纳米技术
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生物传感器
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）