ACS Applied Materials & Interfaces
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2021
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IF 9.229
Ning Gao,Bao Li,Yujiao Zhang,Wenbiao Li,Xue Li,Jie Zhao,Wence Yue,Zhenyu Xing,Bao Wang
Good electrical conductivity, strong catalytic activity, high interaction with lithium polysulfides (LIPSs), simple method, and low cost should be considered for the design and preparation of high-performance electrochemical catalysts that catalyze the conversion of LIPSs. In this work, we designed a bimetallic alloyed multifunctional interlayer with multiple adsorption/catalysis sites. The interwoven carbon fibers derived from bacterial cellulose (BC) not only contribute to reducing metal ions to metals but also confine the growth of Co–Fe alloys formed in situ. The metal supported on carbon is very effective for the conversion of LIPSs due to its high adsorption and catalytic sites. In addition, the synergistic effect between Fe and Co species leads to excellent bifunctional catalytic activity. Through detailed electrochemical analysis and theoretical calculations, we revealed that CoFe@CNFs has superior electrocatalytic activity, and the lithium–sulfur (Li–S) batteries with a catalytic interlayer can deliver satisfactory rate and cycle performance. At a high current density of 2C, the discharge capacity can still reach 627 mAh g–1. At a current density of 1C, the Coulombic efficiency is maintained at a level close to 100% during the whole cycle process and a satisfying low capacity decay of 0.08% per cycle. More importantly, even if the ambient temperature drops to 0 °C, the Li–S battery using the interlayer can still be charged and discharged normally and shows acceptable discharge capacity, which shows that it has good rate kinetics.
研究领域:
材料科学
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电化学
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储能技术
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纳米材料
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催化
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Ming Li,Wancun Huo,Qi Gao,Qingqing Zhu,Caixia Liu,Mingming Feng,Haitao Liu,Yanyan Ji,Wenju Zhu,Laibo Ma,Chunming Zheng,Xiaohong Sun
SnO₂@CoFe-LDH heterostructure is designed for water dissociation in bipolar membranes. • Heterointerface promotes charge redistribution and enhances water molecule activation. • BPM with SnO₂@CoFe-LDH achieves a low voltage of 0.75 V at 100 mA cm −2 . • Ultralow water dissociation resistance of 0.12 Ω is attained. • DFT calculations reveal reduced activation energy due to interfacial synergy. Bipolar membranes (BPMs) are important components in electrochemical energy-conversion systems, but their performance is often limited by slow interfacial water dissociation (WD). Herein, a heterostructured SnO 2 @CoFe layered double hydroxide (SnO 2 @CoFe-LDH) catalyst was designed as an efficient interfacial layer to accelerate WD in BPMs. SnO 2 nanoparticles uniformly anchored on CoFe layered double hydroxide (CoFe-LDH) nanosheets form a robust heterointerface that promotes interfacial charge redistribution and enhances water-molecule activation. Owing to this synergistic heterostructure, the resulting BPM delivers a low transmembrane voltage of 0.75 V at 100 mA cm −2 and an ultralow WD resistance of 0.12 Ω, together with stable operation for 72 h at 50 mA cm −2 . Efficient acid-base generation with high current efficiency and low energy consumption is further achieved in bipolar membrane electrodialysis. This work highlights heterointerface engineering as an effective strategy for developing high-performance BPM interfacial catalysts. Download: Download high-res image (73KB) Download: Download full-size image
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PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
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2026
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IF 4.8
Kaiqi Zhang,Chao Li,Ming Xu,Chaoyue Wang,Jingyang Luo,Jiashun Cao,Hongqiang Ren
Hollow PBA-derived CoFeO nanocages with well-developed mesoporous structure successfully synthesized. • High Co (II)/Co (III) ratio and oxygen vacancies boost PMS activation. • Efficient tetracycline degradation (96.17%) via radical (•OH, SO 4 •– , O 2 •– ) and non-radical ( 1 O 2 ) pathways. • Good reusability and a certain ionic interference tolerance demonstrated. Antibiotic contamination in the environment poses significant risks to ecosystems and human health. In this study, hollow CoFe oxide nanocages derived from a Prussian blue analog (PBA-CoFeO) were synthesized and used for efficient peroxymonosulfate (PMS) activation toward tetracycline degradation. The catalyst exhibits a high Co (II)/Co (III) ratio (1.74) and a high density of oxygen vacancies, which synergistically enhance PMS activation. Tetracycline (TC) was selected as a model antibiotic to evaluate catalytic performance. Under optimized conditions, the PBA-CoFeO/PMS system achieved a removal efficiency of 96.17% and maintained over 80% efficiency after five consecutive cycles, demonstrating excellent stability and reusability. Notably, the TC removal efficiency remained above 80% in the presence of coexisting anions, suggesting a certain resistance to ionic interference. Radical quenching experiments and electron paramagnetic resonance (EPR) spectroscopy revealed that hydroxyl radicals (•OH), sulfate radicals (SO 4 •– ), superoxide radicals (O 2 •– ) and singlet oxygen ( 1 O 2 ) were involved in the degradation process, confirming the coexistence of radical and non-radical pathways. This work highlights the potential of PBAs-derived catalysts for efficient PMS activation and their application in advanced oxidation processes. Download: Download high-res image (271KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Qing Sun,Kailin Li,Tie Shu,Ziyang Guo,Yongfei Li,Yuxin Zhang,Liang Li,Jiaoyi Ning,Peng Zhao,Ke Xin Yao
Cobalt-iron layered double hydroxide (CoFe LDH), a promising air cathode material for rechargeable zinc-air batteries (ZABs), faces significant challenges in practical applications due to its low oxygen evolution reaction (OER) catalytic activity and the ambiguity in identifying its active sites. To address these issues, this study introduces MXene quantum dots (MQDs) into CoFe LDH, fabricating a CoFe LDH/MQD/Co@NF composite with enhanced interfacial electronic coupling. This integration induces electron transfer from CoFe LDH to MQDs, leading to the pre-oxidation of Co ions into higher-valence Co 3+ states, as confirmed by X-ray photoelectron spectroscopy, and optimizing OER intermediate adsorption kinetics. Density functional theory (DFT) calculations reveal cobalt as the primary active site, highlighting its critical role in boosting catalytic activity. The composite exhibits a low OER overpotential of 192 mV at 10 mA cm −2 , a Tafel slope of 36.3 mV dec -2 , a maximum power density of 136.5 mW cm −2 , and a high specific energy of 626 mA h g −1 in ZABs, with exceptional durability over an 85-hour cyclic test. These results demonstrate that MQD incorporation significantly improves OER catalytic activity and enhances ZAB performance, offering a promising strategy for designing high-performance, long-lasting electrocatalysts and advancing electrochemical energy storage technologies.
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
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Bowen Yang,Haiqing Zhang,Shihan Zhang,Haixin Guo,Yaqiong Su,Xinhua Qi
Improving the activation efficiency of peroxymonosulfate (PMS) to produce more radicals is crucial to promote Fenton-like reactions. Herein, hollow carbon polyhedral nanocages-loaded CoFe catalysts via tannic acid etching (TA-CoFe-NC) were prepared based on the metal-ligand exchange mechanism. The magnetic catalyst, with little metal leaching during reaction, achieved the removal efficiency of 95.5 % in ciprofloxacin degradation within 30 min and a first-order kinetic constant of 0.054 min −1 under optimal conditions (0.1 g·L −1 catalyst, 0.2 g·L −1 PMS, unadjusted pH), a 10.76-fold enhancement compared to the unetched catalyst. By quenching experiments and EPR, 1 O 2 , SO 4 •− , and • OH were proved to be the critical reactive species in degradation process. Density functional theory calculations elucidated the adsorption of PMS and the spontaneous decomposition into • OH and SO 4 •− in catalytic process. High d-band center and low integrated crystal orbital Hamilton population promoted the charge transport and catalytic property. Degradation pathway and toxicity of intermediates were also investigated, and exhibited excellent stability and tolerance to environmental interferences. The rational protecting-etching manipulation by TA helps design novel catalysts with high performance and stability, and facilitates PMS adsorption and interfacial electron transfer to achieve the synergetic stabilization-promotion effect.
研究领域:
环境科学
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纳米技术
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催化
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化学工程
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材料科学
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产品关联
DOI
高影响因子
TALANTA
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2025
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IF 6.1
Bowen Shen,Biao Hong,Xinyue Guo,Ruonan Hu,Luodi Wang,Yuchuan Jiang,Wei Li,Wenqing Liu,Zhengyan Wu,Pengqi Yang
Precise detection of ultralow-level antibiotics, such as picomole, in aqueous environments is significant for human health, however, it presents a great challenge to the adsorption capacity and electrocatalytic ability of sensing materials. Here, we used a one-step hydrothermal method to in situ grow spindle-like CoFe-based metal-organic frameworks (MOFs) with a size of about 50 nm in the region of hydrophilic MXene-loading hydrophobic carbon paper. By combining MOFs with abundant adsorption sites and MXene with high conductivity, the problems of adsorption and electrons transfer of ultralow-level antibiotics have been solved, and achieving precise detection of picomole-level antibiotics. As a result, the CoFe-MOFs/MXene/HCP sensing electrode exhibits the ultralow limit of detection with 33 pM and a wide detection range with 0.1 nm–2.0 mM for chloramphenicol (CAP) detection, as well as the designed sensor has excellent anti-interference, reproducibility, and stability. Importantly, the prepared sensing electrode exhibits reliable analytical results for CAP in real water samples, such as bottled water, milk, and urine, indicating that the prepared sensors have a great potential for application in the analysis of antibiotics in real samples.
研究领域:
材料科学
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分析化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
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2024
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IF 14
Xiaodong Yang,Haochen Shen,Xiaoming Xiao,Zhichao Li,Qi Zhou,Wei Yang,Bin Jiang,Yongli Sun,Luhong Zhang,Zhenhua Yan
This study presents a novel method to fabricate metal-decorated, sulfur-doped layered double hydroxides (M/SLDH) through spontaneous redox and sulfurization processes. The developed Ag/SLDH and Pt/SLDH catalysts with abundant heterogeneous interfaces and hierarchical nanostructures demonstrated outstanding oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance, achieving low overpotentials of 212 and 35 mV at 10 mA cm −2 in 1 M KOH, respectively. As both anode and cathode in water splitting, they required only 1.47 V to reach 10 mA cm −2 and exhibited high structural robustness, maintaining stability at 1000 mA cm −2 for 300 h. In-situ Raman analysis revealed that the synergistic effects of metal nanoparticles and S doping significantly promote the transformation into the S-Co 1− x Fe x OOH layer, which serves as the active phase for water oxidation. Additionally, ultraviolet photoelectron spectroscopy (UPS) and density functional theory (DFT) analyses indicated that incorporating metal nanoparticles and S doping increase electron density near the Fermi level and reduce reaction energy barriers, thus enhancing intrinsic OER and HER activities. This study provides a scalable strategy for synthesizing high-performance electrocatalysts for water splitting, with promising potential for broader applications.
研究领域:
材料科学
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电化学
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能源转换与存储
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产品关联
DOI
高影响因子
Joule
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2024
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IF 38.6
Yige Guo,Shuo Wang,Rongtan Li,Jingcheng Yu,Xiaomin Zhang,Mingrun Li,Xusheng Zheng,Junfa Zhu,Yuefeng Song,Guoxiong Wang,Xinhe Bao
Replacing the sluggish oxygen evolution reaction with a favorable methane (CH 4 ) reforming reaction at the anode of solid oxide electrolysis cells (SOECs) can greatly reduce the electrical demand for CO 2 electroreduction at the cathode. However, the perovskite anode always displays limited activity and stability for CH 4 reforming. Herein, through fine-tuning of the average exsolution energy of the B-site components, high-density CoFe alloy nanoparticles are exsolved on the surface of La 0.6 Sr 0.4 Ti 0.3 Fe 0.5 Co 0.2 O 3-δ (LSTFC2) anode after reduction, which shows superior anodic CH 4 reforming performance, with a CH 4 conversion of 86.9% and CO selectivity of 90.1% at 800°C. Moreover, stable operation over 1,250 h with a CO selectivity above 95% is achieved. The electrical energy consumption for CO production decreases from 3.46 kWh m −3 for conventional SOECs to 0.31 kWh m −3 for CH 4 -assisted SOECs. This work provides an efficient strategy to thermodynamically boost the cathodic CO 2 electroreduction performance and simultaneously convert CH 4 to syngas at the anode.
研究领域:
材料科学
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能源科学
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化学工程
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Meishuo Bao,Liang Zhang,Rongsheng Xiao,Xingang Wang,Zheqin Dai,Wuxiang Zhang,Jiansheng Li
The presence of resorcinol (RS) in water contaminated with pollutants may engender environmental and ecosystem risks. In this study, we developed rapid and efficient colorimetric methods for the on-site quantitative determination of RS. Specifically, a synthetic nanozyme composed of nitrogen-doped carbon-coated cobalt-iron (CoFe@CN) was utilized to initiate the oxidation reaction of 3,3′,5,5′-tetramethylbenzidine (TMB) with the activator of peroxymonosulfate (PMS). Compared to the activator of hydrogen peroxide (H 2 O 2 ), PMS demonstrated a sixfold enhancement in catalytic efficacy, markedly elevating the detection performance. Density Functional Theory calculations indicate that RS can serve as a reducing agent for oxTMB, confirming the theoretical feasibility of this process. A linear relationship between inhibition rate (IR %) of RS concentration and absorbance was established and the colorimetric analysis revealed a linear relationship between RS concentration and gray scale values over the range of 0–45 μM, with a detection limit of 3.39 μM. Furthermore, smartphone-based analysis of color images allows for on-site quantitative analysis of RS concentration, leveraging portability and real-time detection capabilities. This study provides pioneering analytical support for on-site water quality monitoring within the ecological environment.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
CHEMOSPHERE
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2022
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IF 8.943
Zhuwu Jiang,Yuchang Wang,Hai Yu,Ning Yao,Jyunhong Shen,Yan Li,HongYu Zhang,Xue Bai
With the rapid development of drinking water disinfection technology , extensive attentions are paid to the nitrogenous disinfection by-products (N-DBPs) that has strong carcinogenicity , thus their degradation becomes important for the health of human beings. In this work, for the first time, CoFe-LDH material used as particle electrode is proposed to treat trace N-nitrosopyrrolidine (NPYR) in a three-dimensional aeration electrocatalysis reactor (3DAER). The factors on the degradation efficiency and energy consumption of NPYR are systematically investigated, and the results of radical quenching experiments show that the degradation of NPYR is completed by combining with ·OH, ·O 2 and direct oxidation together. CoFe-LDH particle electrode plays a vital role in generating ·OH via heterogeneous ‾Fenton-like reaction. Moreover, the adsorbed saturated CoFe-LDH particle electrode can be regenerated by electrochemical action to induce further recycle adsorption and form in-situ electrocatalysis. This work pave a way for the removal of NPYR with high efficiency, low energy conservation and environmental protection.
研究领域:
环境科学
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公共卫生
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2015
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IF 3.368
X. Ge,C.D. Gu,X.L. Wang,J.P. Tu
Adsorption is often time consuming due to slow diffusion kinetic. Sizing he adsorbent down might help to accelerate adsorption. For CoFe spinel oxide, a magnetically separable adsorbent, the preparation of nanosheets faces many challenges including phase separation, grain growth and difficulty in preparing two-dimensional materials. In this work, we prepared porous CoFe oxide nanosheet with chemical formula of Co 2.698 Fe 0.302 O 4 through topochemical transformation of a CoFe precursor, which has a layered double hydroxide (LDH) analogue structure and a large interlayer spacing. The LDH precursor was synthesized from a cheap deep eutectic solvent (DES) system. The calcined Co 2.698 Fe 0.302 O 4 has small grain size (10–20 nm), nanosheet morphology, and porous structure, which contribute to a large specific surface area of 79.5 m 2 g −1 . The Co 2.698 Fe 0.302 O 4 nanosheets show fast removal ability and good adsorption capacity for both organic waste (305 mg g −1 in 5 min for Congo red) and toxic heavy metal ion (5.27 mg g −1 in 30 min for Cr (VI)). Furthermore, the Co 2.698 Fe 0.302 O 4 can be separated magnetically. Considering the precursor can be prepared through a fast, simple, surfactant-free and high-yield synthetic strategy, this work should have practical significance in fabricating adsorbents.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
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IF 7.139
Zhenyu Wang,Xiaoming Mou,Dongrun Li,Caixia Song,Debao Wang
The construction of a bifunctional electrocatalyst with excellent performance and low cost plays a key role in the application prospect of renewable energy. Herein, nickel sulfide/CoFe layered double hydroxide heterostructures on nickel foam (NiS/LDH/NF) have been constructed by using hydrothermal and electro-deposition methods. The amorphous nickel sulfide is deposited on the surface of crystalline LDH mesh-like nanosheets to form a hierarchical flower-like structure. The deposition of amorphous NiS can control the morphology and modulate the electronic structure of NiS/LDH/NF. The obtained NiS/LDH/NF is employed as a bifunctional catalyst for overall water splitting, which can achieve a current density of 10 mA cm −2 at a low voltage of 1.51 V in 1 M KOH. The results show that the high electrocatalytic activity is ascribed to the formation of amorphous NiS/crystalline LDH heterostructure with abundant surface defects and active sites. The synthetic strategy holds a great promise for accelerating the development of hydrogen energy by highly efficient electrocatalytic production of hydrogen.
研究领域:
材料科学
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可再生能源
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电催化
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）