MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Hui Dong,Linlin Zheng,Zhenlong Jiang,Tao Wang,Xinyue Li,Yangyang Ma,Zhu Chang,Xuechuan Lv,Xiaohan Gao,Maotian Xu,Yanli Zhou
Maltol (MA) is a common additive used in many fields, and its detection is of great importance to human health. Here, we synthesized a bimetallic MOF (CuNiMOF) based on graphite paper by a fast, simple, and green electrodeposition method. Then, we constructed a self-calibrated MOF to detect maltol. CuNiMOF was based on graphite paper by a fast, simple, and green electrodeposition method, and then constructed a self-calibrated flexible biosensor for the detection of maltol. In this work, we utilized the amperometric i-t curve (IT), cyclic voltammetry (CV), and multipotential step (STEP) methods to electrosynthesize three modified electrodes (Gp/CuNiMOF/IT, Gp/CuNiMOF/CV, Gp/CuNiMOF/STEP). The MA was characterized by differential pulse voltammetry electrochemical reactions on the electrode surface were investigated. The results showed that compared with the other two electrodeposition processes, the IT method was used to the sensor prepared by the IT method exhibits superior performance compared to the other two electrodeposition processes. The nonlinear response of the sensor to MA was in the concentration range of 0.5 ∼ 450 μM with a detection limit of 0.17 μM.
研究领域:
分析化学
·
材料科学
·
电化学传感器
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2021
·Vol. 11
·期 20
·6742-6749
·
IF 6.119
Zuoyu Yan,Xiuxiu Wang,Yang Tan,Aihua Liu,Fenqiang Luo,Miaorong Zhang,Lingxing Zeng,Yan Zhang
Metals and their alloy-based electrocatalysts continue to attract considerable attention for electrochemical carbon dioxide reduction reactions (CO2RRs). In this work, cuprous oxide (Cu2O) was supported on N-doped flexible roughed graphite paper (NGP) to fabricate Cu2O/NGP self-supporting electrocatalysts for CO2RRs by electrodeposition and heat treatment. In the Cu2O/NGP electrocatalyst, NGP acted as a current collector and conducting channel, which can effectively transfer electrons from the active sites of Cu2O to NGP, and thus, enhance the catalytic performance of Cu2O/NGP for CO2RRs. The overall Faradaic efficiency of Cu2O/NGP for CO2RRs reached 96% at −0.9 V vs. reversible hydrogen electrode, of which 35% originated from yielding ethylene (C2H4), suggesting its high activity and C2H4 selectivity. Furthermore, the excellent stability of Cu2O/NGP over 10 h made it preferable as an effective electrocatalyst for CO2RRs. The good electrocatalytic performance could be attributed to the unique self-supporting structure and the synergetic effect between Cu2O and NGP.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2018
·Vol. 143
·期 21
·5278-5284
·
IF 3.864
Meng Wang,Xianwen Kan
In this study, an exfoliated graphite paper (EGP) was employed as a supported electrode for prussian blue (PB) and gold nanoparticles (AuNPs) modification to fabricate a novel electrochemical sensor. The scanning electron microscopy image showed the multilayer structure of the sensor with PB and AuNPs uniform coating. Due to the high surface area and good conductivity of the multilayer structure, as well as the conductivity of AuNPs, the prepared sensor exhibited an obvious improvement for sensitive detection of nicotinamide adenine dinucleotide (NADH) with a linear range of 5.0 × 10−7 mol L−1–1.0 × 10−3 mol L−1. Moreover, the modified PB film endowed the sensor with good electrocatalytic activity for hydrogen peroxide (H2O2) sensing. Under the optimal conditions, the linear range and limit of detection for H2O2 sensitive detection were 5.0 × 10−8 mol L−1–1.0 × 10−3 mol L−1 and 4.8 × 10−9 mol L−1, respectively. The sensor can also be used for detection in real samples with satisfactory results. The advantages of low-cost, easy modification, multilayer structure, and good conductivity made the EGP an alternative candidate for supported electrode materials in the preparation and application of various electrochemical sensors.
研究领域:
分析化学
·
生物传感器
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
ANALYST
·
2023
·Vol. 148
·期 19
·4869-4876
·
IF 4.2
Yixin Pan,Jing Jiang,Xianwen Kan
Development of an effective and convenient sensor for sensitive detection of nitrites is of great concern since excessive amounts of nitrites can be harmful to both human health and the environment. In this work, Cu-MOF modified exfoliated graphite paper (EGP) was employed as a signal reporter to enable the visual and electrochemical dual-mode sensing of nitrites. Cu-MOFs were in situ synthesized on EGP, which exhibited an excellent oxidase enzyme-like activity to oxidize 3,3′,5,5′-tetramethylbenzidine (TMB) into its oxidation product (oxTMB). The multi-layer structure and the superior electrical conductivity of EGP not only facilitated the loading of the Cu-MOF nanozyme for colorimetric sensing but also enabled its use as an underlying backbone to support electroanalysis. Based on the recognition of nitrite through a highly specific diazo reaction between nitrite and oxTMB, the addition of nitrite caused the colorimetric sensing solution to change color from blue to green, which allowed for the colorimetric sensing of nitrite with a limit of detection (LOD) of 8.5 × 10−6 mol L−1. Meanwhile, the Cu-MOF/EGP electrochemical platform was employed for ratiometric detection of nitrite based on the electrochemical oxidation of nitrite and TMB. Compared with the colorimetric mode, the electrochemical mode possessed higher sensitivity with a LOD of 5.4 × 10−7 mol L−1, indicating the high sensitivity and accuracy of the proposed dual-mode sensing strategy. Furthermore, the determination of nitrite in different pickled food samples is demonstrated.
研究领域:
分析化学
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
·
2025
·
IF 3.3
Huang Yilu,Luo Huili,Zhao Jia,Xiang Yuhang
Electrochemical detection is an applicable rapid detection technology, but it is always limited by sample treatment and matrix interference. In this study, two gel/graphite paper electrodes were obtained by drop coating of sodium alginate gel and chitosan gel onto 0.1 mm graphite paper. Comparations of anti-interference performance and stability indicated that sodium alginate gel/graphite paper electrode (GGPBE) was the preferred term for establishing a rapid determination method for Pb in fruits. Based on the contents of organic acids and main metal ions in fruits, analysis and control of matrix interference were conducted. Organic acids, such as ascorbic acid, citric acid and quinic acid, caused greater interferences than metal ions. Mg(II) and Fe(III) were the notable factors of co-interference with organic acids. Matrix interference could be controlled in 3.92% by chemical oxidation using H 2 O 2 combined with HNO 3 ultrasonic extraction. The established linear range of Pb(II) was 0.1 ∽ 21.0 µg/L and LOD was 0.0274 µg/L under square wave anodic stripping voltammetry method. In the detection of 9 fruits, the contents of Pb were below 0.1 mg/kg. This work developed an easily prepared gel/graphite paper electrode and provided a rapid sample treating-detection method of lead in fruits.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2024
·
IF 2.8
Lixiang Wang,Jingwen Li,Mingqiang Li,Xinping Duan,Haochen Weng,Shuailiang Xu
In this study, we introduce a novel “water-in-salt” electrolyte for Bromine-ion batteries (BIBs) for the first time: 3M AlCl 3 + 1M NH 4 Br. The 3M AlCl 3 establishes the “water-in-salt” system, while 1M NH 4 Br supplies Br- ions. Employing flexible graphite paper as the cathode, during charging, Br- cooperates with AlCl 3 , forming AlCl 3 Br - ions that embed into the graphite paper, resulting in reversible reactions during discharge. The anode utilizes various metals such as Zn, Cu, Pb, In 2 O 3 , undergoing reversible redox reactions in the charge–discharge process. The designed electrolyte effectively prevents elemental bromine generation, presenting a safe, green, and environmentally friendly aqueous electrolyte suitable for BIBs.
研究领域:
能源存储
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2023
·
IF 8.4
Yaobing Fang,Wen Zheng,Tao Hu,Hong Xiao,Li Li,Wenhui Yuan
Graphical This Graphite paper/(SnS 2 -MoS 2 )@CNTs dual-ion battery shows excellent cycling performance and fast charging capacity, which could provide a new insight for the designing of high-performance energy storage device. Dual-ion batteries have been considered as a competitive energy-storage device. However, owing to the lack of suitable high-capacity density and rapid-charging electrode materials, designing a cost-effective and high-performance dual-ion battery is still a great challenge. Herein, an ultrahigh-capacity dual-ion battery is constructed based on a carbon-nanotubes (CNTs) containing SnS 2 -MoS 2 @CNTs heterojunction anode and highly crystalline free-standing graphite paper serves as cathode. The SnS 2 -MoS 2 @CNTs heterojunction consisting of ultrathin nanosheets was prepared via a facile two-step hydrothermal method and shows flower-like morphology and high crystallinity. Benefiting from the unique design concept, the graphite paper/SnS 2 -MoS 2 @CNTs dual-ion battery delivers a high capacity of 274.2 mAh g −1 at 100 mA g −1 and has an outstanding capacity retention of 95 % after 300 cycles under 400 mA g −1 . Even at a high current density of 2 A g −1 the battery still retains a considerable capacity of 112.3 mAh g −1 . More importantly, the battery shows an extremely low self-discharge of 0.006 % h −1 after resting for 24 h. Characterization using SEM and XRD further demonstrate the excellent cycling stability and good reversibility. Consequently, this constructed dual-ion battery could be a promising energy storage device and provide new insights for the design of high-performance dual-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2023
·
IF 6.1
Tianfei Chu,Mengmeng Cheng,Shifeng Hou,Yanzhao Yang
Effective removal of excess manganese ions (Mn 2+ ) from water is urgently needed to maintain human health and ecological balance. To date, electrochemical deposition (ED) techniques have been widely used for their simplicity and flexibility, while the active surface area and reliability of electrodes are still major issues. Herein, modified graphite papers (MGP) fabricated by the anionic intercalation method were used as the working electrode to remove Mn 2+ from wastewater via the electrochemical deposition method. The results showed that the highest removal of Mn 2+ by MGP-E was achieved when the voltage was 1.0 V, the deposition time was 6 h, and the pH value of the wastewater was 3.0. Under the above parameters, the removal rate of Mn 2+ in simulated wastewater can reach over 99.73 %, while the removal rates in industrial wastewater and groundwater can reach 96.20 % and 99.27 %, respectively, which can meet the standard of water treatment. The related tests confirmed that the deposition process had excellent cycling stability and low energy consumption. This study may provide an economical, sustainable and efficient electrode material for Mn 2+ removal from industrial wastewater and groundwater via electrochemical deposition technology.
研究领域:
环境科学
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 3
·1-10
·
IF 5.3
Dong Hui,Jiang Zhenlong,Chen Yanan,Han Huabo,Zhou Yanli,Wang Xiaobing,Xu Maotian,Liu Lantao
Hydroxyl radical (•OH) detection is pivotal in medicine, biochemistry and environmental chemistry. Yet, electrochemical method–specific detection is challenging because of hydroxyl radicals’ high reactivity and short half-life. In this study, we aimed to modify the electrode surface with a specific recognition probe for •OH. To achieve this, we conducted a one-step hydrothermal process to fabricate a CoZnMOF bimetallic organic framework directly onto conductive graphite paper (Gp). Subsequently, we introduced salicylic acid (SA) and methylene blue (MB), which easily penetrated the pores of CoZnMOF. By selectively capturing •OH by SA and leveraging the electrochemical signal generated by the reaction product, we successfully developed an electrochemical sensor Gp/CoZnMOF/SA + MB. The prepared sensor exhibited a good linear relationship with •OH concentrations ranging from 1.25 to 1200 nM, with a detection limit of 0.2 nM. Additionally, the sensor demonstrated excellent reproducibility and accuracy due to the incorporation of an internal reference. It exhibited remarkable selectivity for •OH detection, unaffected by other electrochemically active substances. The establishment of this sensor provides a way to construct MOF-modified sensors for the selective detection of other reactive oxygen species (ROS), offering a valuable experimental basis for ROS-related disease research and environmental safety investigations. Graphical
研究领域:
医学
·
生物化学
·
环境化学
✓ 已验证
DOI
PubMed
高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Xinqiao Wang,Xinlei Jia,Baolu Shi,Donghui Guo,Ning Zhou,Baosheng Xu
Non-ablative thermal protection materials are subjected to localized high-density heat flux, facing extreme temperatures and uneven temperature distribution. Heat dredging is expected to enhance thermal protection efficiency and alleviate its resistance to temperature pressure. In this study, the function of in-plane (IP) heat leading is innovatively incorporated to increase the thermal-protection efficiency of carbon-bonded carbon fiber (CBCF) composites. The modified composite is prepared by a one-step integrated filter press process in which continuous flexible graphite paper (FGP) is used as the heat-leading layer. The typical micromorphology, mechanical response, thermal-insulation and heat-leading performance are determined. The CBCF/FGP composites with a 0.1 mm thick heat-leading layer exhibits a density of 0.22 g/cm 3 . The compressive strength increased by 160 % in the IP direction while remaining consistent in the through-the-thickness direction relative to that of the pure CBCFs. The thermal conductivity in the insulation and heat-leading directions at room temperature are 0.061 W/mK and 21.14 W/mK, respectively, indicating significant anisotropy with an approximately 350-fold difference. The incorporation of FGP effectively enhances the IP heat-leading capabilities of CBCF composites, potentially improving their thermal-insulation efficiency when combined with different matrix materials.
研究领域:
材料科学
·
热力学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2019
·
IF 2.722
Hang Su,Junyan Xiao,Qianhui Li,Chao Peng,Xinxin Zhang,Chi Mao,Qin Yao,Yujie Lu,Zhiliang Ku,Jie Zhong,Wei Li,Yong Peng,Fuzhi Huang,Yi-bing Cheng
Carbon electrode-based perovskite solar cells have shown some advantages in materials cost and long term stability compared to the metal electrode-based devices. Among all the reported carbon electrode techniques, self-adhesive carbon film electrode via press transfer process can achieve high PCE comparable with the Au electrode device in small area perovskite solar cells (∼ 0.1 cm 2 ). Herein, we further promote the carbon film electrode to match the practical square-centimeter scale device. Pre-assembled with highly conductive substrates as graphite paper or aluminum foil , the double layered composite carbon electrode can significantly reduce the series resistance, thus retaining the high photoelectric performance of large area device (1 cm 2 ). Especially with the graphite paper/carbon film electrode, a highest PCE of 17.02% was obtained, which achieved 92% of the PCE of 18.56% in small device. The soft and compressible nature can be the superiority of graphite paper as conductive substrate in carbon film based electrode compared with aluminum foil.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Hang Li,Mingqiang Li,Hu Zhao,Tong Li,Ziren Fang
Chloride ion battery (CIB) is considered as one of the potential objects to replace lithium ion battery because of its high discharge platform and high theoretical capacity. However, traditional CIB still has many problems because it can not solve the problem of matching the positive and negative active materials with the electrolyte. The main performance is poor cycle life, and low battery capacity, and it cannot meet the needs of real life. In our work, we first propose the application of graphite paper as cathode material and aqueous electrolyte in CIB, and reconstruct a new system of CIB. With zinc anode, the cycle life of the battery is more than 4000 times, and the cycle life of the electrolyte is more than 10,000 times under the promotion of lithium salt . At the same time, we synthesize flexible-solid-electrolyte, and first assemble flexible CIB, which broadens the application field of CIB. The breakthrough of flexible chloride ion battery changes the structure of the battery, which can be applied to the car as a part of the car shell to save the material cost. Secondly, chloride ion battery in high temperature environment do not produce safety hazards, which greatly improves the safety.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）