Journal of Energy Chemistry
·
2021
·
IF 9.676
Shuai Wang,Fanyang Huang,Zhengfeng Zhang,Wenbin Cai,Yulin Jie,Shiyang Wang,Pengfei Yan,Shuhong Jiao,Ruiguo Cao
Metal organic frameworks (MOFs) have been extensively investigated in Li-S batteries owing to high surface area, adjustable structures and abundant catalytic sites. Nevertheless, the insulating nature of traditional MOFs render retarded kinetics of polysulfides conversion, leading to insufficient utilization of sulfur. In comparison, conductive MOFs (c-MOFs) show great potential for promoting polysulfides transformation due to superb electronic conductivity. In this work, a nickel-catecholates based c-MOF, Ni-HHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene), is designed to regulate surface chemistry of self-supported carbon paper for advanced Li-S batteries. Taking advantage of the porous structure and high conductivity, the as-prepared Ni-HHTP is conducive to synergising strengthening the chemisorption of polysulfides and accelerating the reaction kinetics in Li-S batteries, significantly mitigating the polysulfides diffusion from the non-encapsulated sulfur cathode, therefore promoting polysulfides transformation in Li-S batteries. This work points out a promising modification strategy for developing advanced sulfur cathode in Li-S batteries.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
VACUUM
·
2022
·
IF 4.11
Chang Xu,Jian Zhang,Huanjun Lu,Xiao Li,Jingchun Lv,Shaohui Zhang
In this work, one-dimensional (1D) conductive MOFs Ni 3 (HHTP) 2 with nanorod-like morphology on the surface of a woven fabric was synthesized by an in-situ growth method. Based on a three-electrode system, the effects of substrate concentration, scan rate and current density on electrode properties were investigated, respectively. The results showed that Ni 3 (HHTP) 2 @ woven fabric-3 (NHWF-3) demonstrated the largest area capacitance at 5 mV s −1 and reached up to 360 μF cm −2 at 20 μA cm −2 . Most importantly, the material still maintained 58.3% (210 μF cm −2 ) of the initially areal specific capacitance when the current density was increased 5 times to 100 μA cm −2 . According to the electrochemical impedance spectroscopy (EIS) curve, NHWF-3 has the smallest semicircle radius in the high-frequency region, indicating that it has the lowest internal transfer resistance and the best conductivity. Thus, this study provides a good example for the simple preparation and practical applications of conductive MOFs composites.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Cunhui Wu,Zhiyang Qin,Yixin Liu,Xinguang Qin,Gang Liu,Xinlin Wei,Haizhi Zhang
Designing efficient nanozyme to construct rapid analytical method for tannic acid (TA) content control has significant influence in food science area. Herein, by one-step self-assembly between Fe 3+ and 2, 3, 6, 7, 10, 11-hexahydroxytriphenylene (HHTP), an amorphous nanomaterial (Fe-HHTP) was synthesized and fully characterized by TEM, AFM, XRD, EDS element mapping and XPS. Then, its peroxidase-like activity was explored by using H 2 O 2 and 3, 3′, 5, 5′- tetramethylbenzidine (TMB) as typical substrates. Due to the inhibition of TA on Fe-HHTP catalyzed chromogenic reaction, a rapid and accurate colorimetric method for TA detection was constructed. After thorough verification, the method featured with merits of low limit of quantitation (0.50 μmol/L), good linear range (0.5–100.0 μmol/L) and high accuracy (recovery rate of 95.85–98.06%). From mechanism study, the inhibition of TA on chromogenic reaction might be resulted from its antioxidation ability and the formation of Fe 3+ -TA complex. Finally, this method was applied to visual detection of TA content in different teas and red wines.
研究领域:
材料科学
·
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Yong Li,Xiang Yu,Yu Fan,Guangxun Zhang,Songtao Zhang,Zhenyang Meng,Ziming Qiu,Yi-chun Su,Yangyang Sun,Nian-Tzu Suen,Hsiao-Chien Chen,Rongmei Zhu,Yecan Pi,Huan Pang
Two-dimensional (2D) conjugated metal–organic frameworks (c-MOFs) have attracted extensive interest in electrochemical fields due to their inherent electrical conductivity. However, the severe interlayer stacking still poses barriers toward their potential applications. The reliable synthesis of ultrathin c-MOF nanosheets is crucial yet remains challenging. Herein, we demonstrate an electrochemical exfoliation approach to obtain ultrathin nanosheets from layer-stacked c-MOF crystals. Our results reveal the electric field-induced ion intercalation mechanism and provide a viable method for the synthesis of ultrathin M-HHTP (M = Ni, Cu, Co; HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) nanosheets. To prove utility, the obtained Ni-HHTP nanosheets as urea oxidation reaction (UOR) catalysts achieve an ultrahigh current density of 165.7 mA cm–2 at 1.35 V versus a reversible hydrogen electrode and nearly 100% selectivity of N-products. Experimental characterization and theoretical calculations reveal that the fully exposed square planar NiO4 active centers effectively reduce the energy barrier of C–N bond cleavage for UOR and suppress the parasitic oxygen evolution reaction.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2023
·
IF 6.1
Chen Cui,Xinyao Lin,Jie Lv,Hang Guo,Lu Shen,Guoqiang Xiang,Wenjie Zhao,Dechen Jiang
Designing innovative electrochemiluminescence (ECL) immunosensors is critical for the detection of biomarkers with a low concentration and the precise evaluation of clinical diseases. Herein, a Cu 3 (hexahydroxytriphenylene) 2 (Cu 3 (HHTP) 2 ) nanoflake-based sandwich-type ECL immunosensor was constructed for C-Reactive Protein (CRP) detection. The Cu 3 (HHTP) 2 nanoflake , an electronically conductive metal–organic framework (MOF), has a periodically arranged porous structure with a cavity size of 2 nm, which not only accommodates a large amount of Ru(bpy) 3 2+ but also confines the spatial diffusion of active species. Therefore, the Ru(bpy) 3 2+ -loaded Cu 3 (HHTP) 2 nanocomplex (Ru@CuMOF) as an ECL emitter exhibits an enhanced ECL efficiency. The ECL resonance energy transfer (ECL-RET) was accomplished by combining Ru@CuMOF used as a donor with gold nanoparticles-functionalized graphene oxide nanosheets (GO-Au) utilized as an acceptor. This should be ascribed to the fact that the ECL emission spectrum of Ru@CuMOF shows the strongest signal intensity at 615 nm, overlapping with the absorption spectrum of GO-Au at 580–680 nm. Targeted detection of CRP in human serum samples was achieved by the sandwich-type immunosensor based on the ECL-RET mechanism with a 0.26 pg mL −1 detection limit. The electro-activated hybrids of Cu 3 (HHTP) 2 and ECL emitters provide a new sensing strategy for the high-sensitivity detection of disease markers.
研究领域:
生物医学工程
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分析化学
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临床诊断
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Wang Shuli,Lu Jihan,Yang Yuanyuan,Yao Jing,Li Zhuo
Effectively separating wide types oil-water mixtures from immiscible to emulsions and in-situ recovering viscous crude oil is an urgent issue in alleviating water pollution and recycling oils. We developed a composite sponge of Cu-HHTP/Fe/PDMS@sponge with superhydrophobicity, excellent photothermal conversion ability and stability for multi-type oils separation from water environments. For light oil-water mixtures, the sponge showed super separation efficiency up to 99.95 % and reusability in the long-term; for oil-in-water emulsion, the separation efficiency was as high as 99.49 %; for recovery of viscous crude oil from water, the absorption capacity of the sponge reached 70 g/g and the continuous absorption rate was up to 6.56 g/min. After soaked in harsh chemical solutions and 500-cycle compression, the sponge still exhibited excellent flexibility and recoverability in viscous oil. The excellent performances of the multifunctional sponge were due to the construction of micro/nano-scale hierarchical structures by PDA and Cu-HHTP, protected with PDMS coating to improve both the hydrophobicity and stability. The introduction of Fe 3 O 4 with Cu-HHTP strengthened the photothermal conversion efficiency with the sponge surface temperature rapidly increased from room temperature to 102.4 °C under simulated sunlight exposure (1 kW/m 2 ), and resulted in the sponge can be remote-controlled magnetically. This simultaneous, fast and continuous oil-water separation and adsorption processes can be readily and widely applied for oily water purification and oil-spill cleanup.
研究领域:
环境科学
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材料工程
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化学工程
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纳米技术
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能源回收
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2026
·
IF 6.7
Zihao Zhao,Jianlong Li,Jinmi Zhang,Qiang Li,Sheng Li,Yingbo Shi,Xiaoli Xiong
The simultaneous determination of dopamine and uric acid in complicated biological matrices remains challenging due to overlapping electrochemical signals and interference from coexisting species. Herein, a machine learning-assisted electrochemical sensor based on a Cu 3 (HHTP) 2 /COOH-MWCNTs hybrid is developed for the simultaneous determination of these analytes. Benefiting from the unique π-π stacking and π-d conjugation characteristics of Cu 3 (HHTP) 2 , as well as the excellent coordination effect between COOH-MWCNTs and Cu 2+ and the good dispersibility of carbon nanotubes themselves, the composite material exhibits more prominent surface activity, significantly boosting the exposure of active sites and accelerating the electron transfer kinetics at the electrode-electrolyte interface. On this basis, we constructed an electrochemical sensing platform for the simultaneous detection of DA and UA in human serum samples. The sensor show excellent performance with dual linear ranges of 0.5–15 and 15–80 μM for DA, and 1–200 and 200–350 μM for UA, achieving low LODs of 0.039 μM and 0.083 μM, respectively (S/N = 3). Furthermore, machine learning (ML) algorithms were employed to optimize electrochemical signal processing, enabling more accurate and robust analysis of complex data. The proposed approach achieved successful application in the simultaneous determination of DA and UA in human serum matrix samples.
✓ 已验证
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2022
·Vol. 10
·期 2
·396-405
·
IF 7.779
Wei Shuang,Ya Wang,Fuyou Chen,Yujun Wu,Zhengyu Bai,Lin Yang
Metal–organic framework materials have numerous significant merits for use as electrodes in sodium-ion batteries, such as multiple active sites and porous structures. However, the masked active sites and pores limit their performances. Herein, we rationally selected Ni-HHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) with a stable structure, and adopted thermal treatment prior to its carbonization to open blocked pores and expose multiple active sites. As expected, after thermal treatment at a low temperature of 250 °C, the obtained Ni-HHTP-250 sample still retained the intrinsic crystal skeleton and crystal type, and exposed more actives sites and pores than those of pristine Ni-HHTP. The obtained Ni-HHTP-250 as an electrode material for sodium-ion batteries exhibits a large reversible discharge capacity of 420 mA h g−1 at 0.1 A g−1 along with a fine rate capability of 200 mA h g−1 at 2.0 A g−1. Mechanism studies show that both the Ni ions and organic ligands in the Ni-HHTP-250 sample are active sites. The H2O molecules and the –OH subgroups in the pores masking the active site can be removed after heat treatment. Hence, the excellent electrochemical performance is largely due to the open porous structure and exposed active sites, resulting in rapid Na+ diffusion and relatively high electronic conductivity. This work offers an innovative idea for preparing high-performance electrodes of metal-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 11
·2413
·
IF 4.2
Shi Wang,Ping Li,Junyi Wang,Jun Gong,Helin Lu,Xiaobo Wang,Quan Wang,Ping Xue
The realization of efficient and accurate detection of biomolecules has become a key scientific issue in the field of life sciences. With the rapid development of nanotechnology, electrochemical sensors constructed from the superior physical and chemical properties of nanomaterials show faster and more accurate detection. Among nanomaterials, two-dimensional conductive MOF (2D cMOF) is considered to be a star material in electrochemical sensors due to its remarkable conductivity, high porosity, and stability. In this paper, a Cu3(HHTP)2/SPE electrochemical sensor for the detection of ascorbic acid (AA) was constructed by modifying 2D cMOF (Cu3(HHTP)2) on the surface of the screen-printed electrode (SPE). The sensor exhibited excellent catalytic activity in the detection of AA, with a lower detection limit of 2.4 μmol/L (S/N = 3) and a wide linear range of 25–1645 μmol/L. This high catalytic activity can be attributed to the abundant catalytic sites in Cu3(HHTP)2and the rapid electron transfer between Cu+and Cu2+, which accelerates the oxidation of AA. This work lays a foundation for the subsequent development of MOFs with special electrochemical catalytic properties and the integration of 2D cMOF into intelligent electrical analysis devices.
研究领域:
纳米技术
·
电化学
·
生物传感器
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分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Dong Zhang,Ren Ma,Haozhe Liu,Zhengqiang Xia,Gang Xie,Sanping Chen
Constructing S-scheme heterojunctions on two-dimensional (2D) conductive metal–organic frameworks (c-MOFs), which possess high specific surface area, abundant active sites, and excellent electrical conductivity, is widely regarded as an effective strategy to enhance photocatalytic performance. In this study, an S-type heterojunction was fabricated by coupling a 2D c-MOF, Cu3(HHTP)2, with In2S3 to synergistically improve photocatalytic activity. Unlike conventional flake-like heterojunctions that often block the vertical pore channels of c-MOFs, we synthesized rod-like Cu3(HHTP)2/In2S3 composites through controlled morphological engineering. Experimental results demonstrate the resulting nonplanar interfacial contact effectively preserves the intrinsic pore architecture while fully exposing the dz2 orbitals of Cu active centers. Structural analyses reveal that the rod-like Cu3(HHTP)2 interacts with In2S3 predominantly via In–O bonds formed on its lateral facets, thereby maintaining the inherent porosity and exposing a large number of active sites. Consequently, the CO2 adsorption capacity reaches 13.44 cm3·g–1, 2.18 times higher than that of the flake-like Cu3(HHTP)2/In2S3 composite that In2S3 is bonded via Cu–S bonds on the surface. Moreover, the incorporation of In2S3 enhances interlayer charge transport within the rod-like structure. As a result of these synergistic effects, the electron consumption rate of the rod-like heterojunction is 1.73 times greater than that of its flake-like counterpart. The unique architecture not only retains the in-plane charge transport advantages derived from d-π conjugation in c-MOFs but also introduces interlayer electron-bridging pathways through In2S3, leading to significantly improved electrical conductivity and charge separation efficiency.
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Yao Jin,Xiangwei Yuan,Junchun Guo,Li Xu,Qian Wang,Xiaoli Xiong
Dopamine (DA) is a central neurotransmitter that plays a crucial role in human metabolism. Its precise detection is of great importance in disease diagnosis. Compared with single-signal detection methods, colorimetric and electrochemical dual-signal outputs can self-validate the measured data and counteract interference effects, which is expected to provide more reliable detection results. In this paper, carbon nanofiber-supported 3D bristlegrass-like π-conjugated conducting metal–organic frameworks ( c MOF) Cu 3 (HHTP) 2 nanorod arrays (Cu 3 (HHTP) 2 NRAs/CNF) catalyst with core–shell structure are synthesized by electrospinning and solvothermal reaction. The obtained catalyst possesses remarkable peroxidase-like activity which can catalyze the colorless 3,3′,5,5′ −tetramethylbenzidine (TMB) to blue oxTMB. The mechanism study showes that ·OH radicals are the main active substances. Meanwhile, the core–shell structure between π-conjugated cMOF and CNF can effectively inhibit the aggregation of Cu 3 (HHTP) 2 nanorods and generate more catalytic active sites, resulting in strong electrocatalytic activity of Cu 3 (HHTP) 2 NRAs/CNF. As a result, a novel dual-mode sensor based on colorimetric and electrochemical are constructed for detecting dopamine (DA) with a good linear relationship ranging from 2.5-60 μM and 0.1–106 μM, and the limit of detection (LOD) are 0.27 μM and 10.1 nM (S/N=3), respectively. This study opens up a new idea for the application of c MOF peroxidase-like enzyme in sensing field.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Yao Jin,Xiangwei Yuan,Lian Ou,Jiaying Wu,Jiangtao Hu,Kang Xue,Xiaoli Xiong
Formaldehyde is known to harm the respiratory, nervous, and digestive systems of people. In this paper, a novel dandelion-like electrocatalyst with core–shell heterostructure arrays were fast self-assembled prepared in situ using copper foam (CF) as support substrate and 2,3,6,7,10,11 hexahydroxy-triphenyl (HHTP) as ligand (Cu(OH) 2 @Cu 3 (HHTP) 2 /CF) by a simple two-step hydrothermal reaction. The 1D Cu(OH) 2 nanorods “core” and the 2D π-conjugated conducting metal–organic frameworks (Cu 3 (HHTP) 2 c MOF) “shell” with remote delocalized electrons give the dandelion-like heterogeneous catalysts excellent electrochemical activity such as a large specific surface area, high conductivity and a fast electron transfer rate. The Cu(OH) 2 @Cu 3 (HHTP) 2 /CF exhibited excellent electrocatalytic performance for formaldehyde under alkaline conditions with a linear range of 0.2 μmol/L – 125 μmol/L and 125 μmol/L – 8 mmol/L, a detection limit as low as 15.9 nmol/L (S/N = 3), as well as good accuracy, consistency, and durability, and it effectively identified FA in food.
研究领域:
化学传感器
·
材料科学
·
食品安全检测
✓ 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）