ELECTROCHIMICA ACTA
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2025
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IF 5.6
Liu Yang,Zihao Fan,Fujun Cui,Taolong Wu,Tingxu Fang,Yujie Guo,Li Tian,Bo Pang,Gaohong He,Xuemei Wu
Vanadium redox flow battery (VRFB) is promising large-scale energy storage technology for renewable energies, while the sluggish kinetics of vanadium redox reaction restricts the efficiency at high current density. Herein, the strategy of boosting V 2+ /V 3+ redox reaction by atomic Bi active sites decorated graphite felt electrode derived from bismuth-based metal−organic framework (Bi-MOF) is proposed. Bi-MOF, dispersing abundant Bi metal sites on porous carrier, helps the Bi atoms to form atomic active sites easily by coordinating with N through the nitrogen source mediated carbonization process. Porous nanobundles of atomic Bi catalyst uniformly bind to the graphite felt, exhibiting over 2 folds increase in specific surface area, higher V 2+ /V 3+ redox peak currents and reversibility, and one order of magnitude lower of charge-transfer resistance. The atomic Bi active sites decorated graphite felt negative electrode achieves high VRFB performance even with the vanadium ions heavily permeable Nafion membrane, showing 13.1 % higher energy efficiency at 200 mA cm –2 (80.2 % vs. 70.9%), 68.1% increase in electrolyte utilization comparing to the pristine graphite felt, and keeping stable during 1500 charge/discharge cycles. The performance is superior to the reported metal−organic frameworks (MOFs)-derived catalyst decorated electrodes.
研究领域:
材料科学
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能源存储技术
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高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2024
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IF 4.3
Tiantian Zhou,Ju Liu,Huanhui Zhan,Ping Wang,Kefan Chao,Muhua Chen,Junjie Zheng,Bo Fu
Herein, through in-situ growing BiVO 4 nanosheets on CAU-17 (Bi-based metal-organic framework) with a hydrothermal method , a BiVO 4 /CAU-17 Z-scheme heterojunction photocatalyst is fabricated. The composite manifest that the BiVO 4 is well dispersed on CAU-17 while CAU-17 surface transforms into a well-defined sheet-like morphology. As a result of the construction of Z-scheme heterojunction , in contrast to pure BiVO 4 and CAU-17, composites have excellent photodegradation ability for Rhodamine B (RhB) and Congo Red (CR), and achieve synergistic removal of pollutants in the RhB/CR binary system, indicating it has great potential in the treatment of dye wastewater. At the same time, it still maintains outstanding photocatalytic performance after five cycles of testing, demonstrating superior reusability and durability.
研究领域:
环境科学
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材料科学
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APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·Vol. 38
·期 7
·e7542
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IF 3.7
Zhiwei Liu,Liying Wang,Shanghai Dong,Lu Li,Jingjing Wang,Zhenzhu Cao,Yongfeng Zhang,Lin Cheng,Jucai Yang
Three distinct morphologies of Bi-MOFs were innovatively employed as carriers, facilitating the formation of heterojunctions with BiPO 4 . Among these, the optimal photocatalytic performance was demonstrated by the type II heterojunction BiPO 4 /CAU-17. Bi 3+ competitively coordinated to crucially aid CAU-17's transformation into a heterojunction, enhancing interfacial contact in BiPO4/CAU-17. These photocatalysts effectively degraded dyes (RhB, MO, MB) and tetracycline (TC) under light exposure. RhB degradation was 3.33 times faster with BiPO 4 /CAU-17 than BiPO 4 , 1.45 times faster than FCAU-17, 1.36 times faster than FRCAU-17, and 1.32 times faster than CAU-17. Analyzing carrier density, Fermi level, and band structure through VB-XPS, UV–VIS, and Mott–Schottky provided insights into enhanced separation of photoexcited electron–hole pairs. This study presents a novel approach to tackle the aggregation challenge of the wide-bandgap material BiPO 4 by using suitable MOFs as carriers. It offers valuable perspectives for the design and application of photocatalysts in environmental remediation.
研究领域:
材料科学
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环境科学
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高影响因子
Sustainable Energy & Fuels
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2024
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IF 5
Yuting Wu,Keru Cao,Jun Yan,Yuheng Zhang,Biao Zhang,Yanan Wang,Yong Yang,Dacheng Zhou,Qi Wang,ChunXia Liu
Electrochemical detection techniques are unable to accurately distinguish isomers with similar structures and properties due to the poor stability and selectivity of some sensors and their susceptibility to environmental interference. Bimetallic synergistically synthesized MOF materials have various types of highly ordered pores and can be used as adsorbent materials and catalyst carriers. Therefore, a composite material was developed to prepare its derivative Cu/Bi@C using a bimetallic organic skeleton (Cu/Bi-MOF) as a precursor, inheriting the large number of active sites on the surface of the MOF and large surface area, while improving the electrochemical response signal. The morphology and structure of the synthesized Cu/Bi@C composites were tested and analyzed by XRD, SEM and other characterization methods, and the electrochemical response of the Cu/Bi@C nanocomposites was analyzed by using an electrochemical workstation. In this study, a simple and highly selective electrochemical method was developed for the simultaneous determination of catechol and catechol quinone. Differential pulse voltammetry (DPV) was used for the simultaneous detection of HQ and CC. The results showed that the Cu/Bi@C electrode was able to efficiently and highly selectively detect both isomers. The Cu/Bi@C electrode could detect HQ and CC in the range of 2–600 μM and 2–800 μM, respectively, under the detection environment of pH = 6.0. The detection limits were 0.08 μM and 0.11 μM (S/N = 3), respectively. The sensor was successfully applied to real samples and showed low detection limits, good recoveries, high selectivity, stability and reproducibility. This provides a new idea for electrochemical detection and is expected to be applied in several fields.
研究领域:
分析化学
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材料科学
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环境科学
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高影响因子
APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Xiaohan Li,Yi Wen,Chenguang Qian,Bowen Cui,Fang Yuan,Chunquan Li,Zhiming Sun
Diatomite-induced amino coordination transformation Bi-MOF composite was prepared. • Surface silanol groups modulate Bi 3+ coordination, inducing amino ligand transformation. • The coordination transformation forms highly dispersed NH 2 -Bi-MOF nanowhiskers. • The composite shows enhanced photocatalysis, cycling stability and lower costs. Developing photocatalysts featuring outstanding catalytic activity and economic viability contributes greatly to artificial carbon cycling and addressing energy and environmental challenges. In this study, we adopted a strategy combining amino ligand modification with diatomite support to successfully synthesize amino-modified NH 2 -Bi-MOF/diatomite composites. These materials utilize the silanol groups on the diatomite surface to modulate the coordination environment of the Bi 3+ metal centers, inducing the conversion of amino ligands and promoting the formation of Bi-N bonds, thereby transforming the morphology of the NH 2 -Bi-MOF from an agglomerated state to highly dispersed nanowhiskers. The characterization results indicate that the highly dispersed structure endows the material with outstanding chemical stability, light-harvesting capability, CO 2 adsorption capacity, and carrier separation efficiency. Meanwhile, the optimal sample, NH 2 -Bi-MOF/diatomite-0.2, achieves a CO production rate of 10.440 μmol·g −1 ·h −1 , representing increases of 78% and 45% compared to Bi-MOF and NH 2 -Bi-MOF, respectively. Notably, no apparent decline in catalytic performance was observed after four cycles. Furthermore, the introduction of diatomite substantially reduces catalyst preparation costs. This study also systematically elucidates the conversion mechanism of amino ligands and the interfacial synergy between diatomite and NH 2 -Bi-MOF, clarifying the photocatalytic CO 2 reduction pathways and core mechanisms of the composite material. The findings provide new insights for the development and industrial application of highly efficient and economical photocatalysts. Download: Download high-res image (191KB) Download: Download full-size image
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Feng Zhou,Shijie Liu,Yuanyuan Zhao,Xinzhi Liu,Danfeng Qin,Hua Liu
In this work, a high-sensitivity electrochemical sensor was developed using a hybrid strategy, where sheet-like MXenes-based composites (Bi-MOF/MXenes) were prepared through the in-situ growth of bismuth-based metal-organic frameworks (Bi-MOF) on the MXenes surface. This hybrid composite material was fabricated using a simple physical synthesis method, which maintains excellent electrocatalytic activity while enhancing the electron transfer rate and electroactive surface area. The Bi-MOF/MXenes modified electrode has been demonstrated to be an effective tool for the detection of nitrite. The electrode exhibited a remarkable limit of detection (LOD) of 0.028 μM and a wide linear range of 0.5~4715 μM. The sensor exhibited remarkable repeatability and reproducibility, with relative standard deviation (RSD) values of 1.74% and 4.87%, respectively. The proposed approach was effectively utilized for detecting nitrite in sausage and fermented bean curd.
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ACS Sensors
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2023
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IF 8.9
Fan Zhao,Wei Cao,Pu-Hong Wang,Jingfeng Wang,Lingmin Yu,Zhihong Qiao,Zhi-Jun Ding
In2O3 is an optimal material for sensitive detection of carbon monoxide (CO) gas due to its low resistivity and high catalytic activity. Yet, the gas response dynamics between the CO gas molecules and the surface of In2O3 is limited by its solid structure, resulting in a weak gas response value and sluggish electron transport. Herein, we report a strategy to synthesize porous In2O3/Fe2O3 core–shell nanotubes derived from In/Fe bimetallic organic frameworks. The fabricated porous In2O3/Fe2O3-4 core–shell nanotubes present outstanding gas sensitivities, including a response value 3.8 times (33.7 to 200 ppm CO at 260 °C) higher than that of monometallic-derived In2O3 (8.7), ultrashort response and recovery times (23/76 s) to 200 ppm CO, low detection limit (1 ppm), promising selectivity, and long-term stability. The enhanced sensing mechanisms are clarified by the combination of experiment and first-principles calculations, showing that the synergetic strategy of higher adsorption energy, increased electrical conductivity, higher electron transfer numbers, and larger specific surface area of porous core–shell structures promotes the surface activity and charge transfer efficiency. The present work paves a way to tune gas-sensing materials with special morphologies for the development of high-performance CO sensors.
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PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2024
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IF 4
Yuxuan Ke,Shuzhen Chen,Suisui Su,Jiao Zhang,Shenghua Hu,Cuiqing Zhang,Changyuan Hu,Shizheng Zheng
Bi 2 O 3 has been recognized as a promising anode of aqueous secondary battery because of the high capacity, but the application is greatly hindered by the poor conductivity and limited actual capacity. Herein, for the first time, one dimensional (1D) α-Bi 2 O 3 nanobelt is fabricated via alkali etching strategy using rod-shaped Bi-MOF (CAU-17) as the self-sacrificial template. Specifically, high-crystalline and oxygen-deficient α-Bi 2 O 3 nanobelt with length and width of 6 μm and 300 nm are identified. The electrochemical results demonstrate the high specific capacity (247 mAh g −1 @1 A g −1 ) and acceptable stability of α-Bi 2 O 3 nanobelt. Such superior capacity is derived from the exposed electrochemical active sites, fast charge transfer and efficient ion diffusion in 1D high-crystalline and oxygen-vacancies enriched structure. The assembled Ni-Bi battery displays high capacity (78.3 mAh g −1 ) and high energy density of 100.2 Wh kg −1 (at power density of 2829.8 W kg −1 ). Our work provides rational guidance for architecting 1D high-capacitive electrodes for aqueous rechargeable alkaline battery.
研究领域:
材料科学
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电化学
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2021
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IF 4.464
Jingyu Xu,Yangyang Xie,Jingqiang Zheng,Congyin Liu,Yanqing Lai,Zhian Zhang
Sodium (Na) metal anode has been considered as the promising candidate for next generation high-energy-density rechargeable batteries such as Na-S, Na-O 2 and Na-CO 2 , owing to its high specific capacity, low electrode potential and low cost. Unfortunately, some intractable problems hinder the practical application, including volume change and dendrite formation induced by inhomogeneous Na nucleation. Herein, 3D carbon cloth (CC) supporting Bi-MOF derived carbon nanosheets containing Bi nanoparticles and carbon shells (CC@Bi@C) were prepared to serve as Na deposition/dissolution hosts, integrating high surface area and favorable sodiophilicity. Due to the existence of Bi sodiophilic sites, Na nucleation and deposition can be induced, rendering uniform and dendrite-free morphology. Moreover, the 3D carbon framework can effectively reduce the current density and uniform distribution of Na + flux, solving the uncontrolled Na dendrite growth. As a result, the CC@Bi@C||Na half cell operating at 1 mA cm −2 for 1 mA h cm −2 exhibits 99.85% Coulombic efficiency for nearly 500 cycles. The symmetric cell maintains stable cycle for more than 300 h at 2 mA cm −2 for 2 mA h cm −2 with low overpotential. When paired a full cell with Na 3 V 2 (PO 4 ) 3 cathode, CC@Bi@C anode exhibits a stable capacity of 103.4 mA h g −1 at 1C (1 C = 117 mA h g −1 ) over 150 cycles for 95.5% capacity retention with high CE of 99.0%. This work provides a facile strategy to inhibit dendrite growth and uniform Na deposition.
研究领域:
材料科学
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能源存储与转换
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高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
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2024
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IF 3.9
Ji Yufeng,Zou Congyang,Wang Yong,Zhou Zhuyou,Liu Menghe,Xu Ying,Liu Ruijie,Yang Minjie
In this study, a novel photocatalyst composed of silver phosphate (Ag 3 PO 4 ) and bismuth-based organic framework (Bi-MOF) were synthesized via chemical precipitation at room temperature, and the photocatalytic degradation of pollutants under visible light irradiation was conducted to evaluate their photocatalytic performance. The composite materials exhibited significantly enhanced photocatalytic activity compared to pure Bi-MOF and Ag 3 PO 4 , with APBM-1/1 performing the most effectively. The degradation efficiencies of rhodamine B (RhB) and tetracycline hydrochloride (TCH) were 99% and 86.9% within 50 min and 30 min of light exposure, respectively. The construction of a unique p-n heterojunction interface between Ag 3 PO 4 and Bi-MOF significantly enhanced the efficiency of interfacial charge separation, leading to exceptional photocatalytic activity. Capture experiments and electron paramagnetic resonance (EPR) were conducted, revealing that photogenerated holes (h + ) and superoxide radicals (·O 2 − ) were the primary active species involved in the degradation reaction. Based on these findings, a plausible mechanism for the photocatalytic process was proposed.
研究领域:
环境科学
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材料科学
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Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 3
·122633
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IF 7.5
Xiaoxuan Li,Ying Lv,Jiaxin Du,Xuelian Chen,Meixia Xiao,Shubin Lei
Defect engineering coupled with heterojunction construction represents a pivotal strategy for optimizing the charge separation dynamics of photocatalysts. Herein, we report the fabrication of a novel Z-scheme heterojunction composed of bismuth-based metal-organic frameworks (NOTT-220) and layered Bi 2 O 2 [BO 2 (OH)] nanosheets via a hydrothermal approach. To further potentiate the photocatalytic activity, surface oxygen vacancies (OVs) were precisely introduced into the heterostructure through controlled ultraviolet (UV) irradiation. This defect-rich engineering strategy significantly broadened the visible-light absorption range and facilitated the separation of photogenerated carriers. Consequently, the optimized catalyst (OVs-BN-20) exhibited a superior photocatalytic reaction rate constant of 0.8133 min −1 , achieving 95.9% degradation rate of CIP within 2 h. Detailed mechanistic investigations, including liquid chromatography-mass spectrometry (LC-MS) and electron spin resonance (ESR), elucidated the degradation pathways and confirmed the synergistic role of superoxide radicals (·O 2 -) and photogenerated holes (h + ). This work not only provides a facile pathway for designing defect-modulated Z-scheme photocatalysts but also offers profound insights into the mineralization mechanisms of persistent antibiotic pollutants.
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高影响因子
DESALINATION
·
2023
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IF 9.9
Jing Jiang,Ying Xu,Chengmei Tang,Xinzhi Wang,Wei Wei,Lunhong Ai
Plasmonic nanostructures have been demonstrated to be an important class of photothermal absorbers, facilitating solar vapor generation by plasmonic heating. However, the high cost and sophisticated preparation of commonly used plasmonic noble metals pose significant obstacles to practical applications. Here, we report for the first time an affordable plasmonic evaporation system that combines the porous carbon frameworks encapsulated semimetal Bi nanoparticles (Bi-C) and carbon felt (CF). The hydrophilic Bi-C and porous network structure of CF favor effective light harvesting and fast water transmission, promoting photothermal conversion and mass transfer during solar evaporation. Under one sun irradiation, the designed Bi-C/CF exhibits the robust behavior for solar steam generation, achieving an expected high evaporation rate of 1.50 kg·m −2 ·h −1 and a comparable evaporation efficiency of 91.9 %. As a result, the excellent performance of Bi-C/CF not only benefits the sustainable freshwater production from saline water and seawater, but also enables efficient wastewater purification for energy-saving water source remediation.
研究领域:
材料科学
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环境科学
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高影响因子
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