Materials Today Bio
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2024
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IF 8.7
Chunmeng Ding,Yuexing Zhu,Zhiyuan Huo,Shouzhi Yang,Yan Zhou,Ayizekeranmu Yiming,Wei Chen,Shanrong Liu,Kun Qian,Lin Huang
Polyphenols with antioxidant properties are of significant interest in medical and pharmaceutical applications. Given the diverse range of activities of polyphenols in vivo, accurate detection of these compounds plays a crucial role in nutritional surveillance and pharmaceutical development. Yet, the efficient quantitation of polyphenol contents and qualification of monomer compositions present a notable challenge when studying polyphenol bioavailability. In this study, platinum-modified nickel-iron layered double hydroxide (Pt/NiFe-LDH hybrids) were designed to mimic peroxidases for colorimetric analysis and act as enhanced matrices for laser desorption/ionization mass spectrometry (LDI MS) to quantify and qualify polyphenols. The hybrids exhibited an enzymatic activity of 33.472 U/mg for colorimetric assays, facilitating the rapid and direct quantitation of total tea polyphenols within approximately 1 min. Additionally, the heterogeneous structure and exposed hydroxyl groups on the hybrid surface contributed to photoelectric enhancement and in-situ enrichment of polyphenols in LDI MS. This study introduces an innovative approach to detect polyphenols using advanced materials, potentially inspiring the future development and applications of other photoactive nanomaterials.
研究领域:
分析化学
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材料科学
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药学
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营养科学
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产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2022
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IF 7.613
Y. Chen,M. Yang,Y. Jia,P. Yan,F. Chen,J. Qian,L. Xu,H. Li
Photoelectrochemical (PEC) aptasensor based on photoactive species with remarkable and stable PEC response is a rising analytical method to implement highly efficient and sensitive detection of residual antibiotics in the field of food. Herein, NiS 2 /NiFe-layered double/graphitic carbon nitride (NiS 2 /NiFe LDH/g-C 3 N 4 ) ternary heterostructure designed by the surface vulcanization of flower-like NiFe LDH/g-C 3 N 4 was used for developing a label-free PEC aptasensing platform to detect enrofloxacin (ENR). The introduction of NiS 2 with narrow bandgap can strengthen the light harvesting of solar energy, producing large amounts of photoinduced carriers. NiS 2 as the electrons conduction bridge further accelerates the transmission efficiency of electrons in contrast to binary heterojunction, endowing ternary heterostructure with superior photocurrent signal. A label-free PEC aptasensor detected ENR with an amplified detection signal because of the oxidation of ENR molecules by photoinduced holes. This PEC aptasensing platform of ENR manifested a wide detection range from 3.6 × 10 −7 to 30 ng/mL with a low detection limit of 1.2 × 10 −7 ng/mL as well as can provide a sensitive and stable analysis with feasible application to monitor milk and honey samples. This design can open the utilization of ternary heterostructure by surface vulcanization to improve the sensitivity of PEC aptasensing platform for monitoring environmental pollutants.
研究领域:
分析化学
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食品科学
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环境监测
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Xue Bai,Fengyi Sun,Liyan Ma,Zhuwu Jiang,Hongcheng Di,Chuntao Pan,Fengying Zhang,Jiahan Yang,Hongyu Zhang
A green and sustainable three-dimensional particle electrodes system with nickel-iron layered double hydroxide mixing activated carbon particles (NiFe-LDH/AC) as particle electrodes is used in this work. Its employment in degradation of N-Nitrosodiethylamine (NDEA), A type of nitrosamines disinfection byproducts (NAs) widely present in water bodies, exhibiting significant degradation efficiency at close to neutral pH. Response surface methodology (RSM) is used to analyze the interaction effects and predict optimal conditions of four operating parameters (influent water flow, electrolyte concentration, current density and initial concentration) on the NDEA degradation efficiency. Calculated coefficients of determination (R 2 ) are higher than 0.997 for all responses according to analysis of variance. At optimum conditions, a maximum degradation efficiency of 71.88% is achieved for NDEA. The results of electron paramagnetic resonance (EPR) and free radical quenching experiments indicate that the degradation of NDEA in the 3D AER system is dominated by •OH. Furthermore, based on the recognition of main reaction intermediates by GC-MS and density functional theory (DFT), possible degradation pathway is proposed and toxicological evaluation of degradation products is made. Our research provides a promising alternative method for the efficient and environmentally friendly removal of NAs from water.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Chen Qiao,Zahid Usman,Tai Cao,Souleymen Rafai,Zhitao Wang,Youqi Zhu,Chuanbao Cao,Jiatao Zhang
High-valence Ni and Fe metal sites have demonstrated a crucial role in enhancing the catalytic performances of NiFe-LDH electrocatalysts in oxygen evolution reaction (OER). Although considerable OER catalytic performances achieved under high overpotential, the catalytic talent of NiFe-LDH electrocatalysts at low overpotential is rarely realized due to the absence of high-valence Ni and Fe sites. We herein report a surface engineering route to fabricate sulfated NiFe-LDH nanosheets via ion exchange strategy in sulfate-rich media. XPS results reveal a modified surface electronic structure with high-valence Ni and Fe after ion exchange reaction. Computational PDOS results suggest that computed d-band centers (ε d ) of Fe and Ni for sulfated NiFe-LDH show a significant downward shift resulting an increased valence of metal cation with orbital volume shrinkage. The high-valence Fe can facilitate a optimized multi-electron process of Ni center from [Ni II -OH] − /[Ni III -OH] − to Ni IV -OOH rather than Ni II /Ni III to Ni IV at low overpotential. The high-valence Ni can serve as the highly active center for O-O coupling during OER process. Combined with the synergetic action of high-valence Fe and Ni, the sulfated NiFe-LDH nanosheets exhibit much larger reaction kinetics and outstanding electrocatalytic activity on glassy carbon electrode (η 10 = 219 mV, η 50 = 288 mV) with a remarkable long-term stability.
研究领域:
材料科学
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电化学
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催化科学
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Wei Xia,Gui-Zhi Guo,Xue-Qian Wu,Ya-Meng Yin,Ya-Pan Wu,Shuang Li,Ruan Chi,Dong-Sheng Li
Direct methanol fuel cells (DMFCs) can permit the utilization of noble-metal-free electrocatalysts , which certainly reduces the cost and accelerates their practical implementation. With the exploration of efficient and economical methanol oxidation reaction (MOR) catalysts, Ni-based nanostructures have been recognized as the most promising MOR catalysts in alkaline media. Herein, we construct a novel heterojunction MOR electrocatalyst composed of Ni-based metal-organic framework (Ni-MOF) and NiFe-based layered double hydroxides (LDHs) through a coordination-induced self-assembly strategy. Owing to the synergic effect between Ni and Fe sites, coupled with the effect of hetero-interface, the resultant Ni-MOF/NiFe-LDH composite exhibits remarkable MOR activity in 0.1 M KOH electrolyte with the oxidation current density (32.66 mA cm −2 ) is 2.65 and 2.44 times higher than that of the primitive NiFe-LDH and Ni-MOF. The excellent stability of the Ni-MOF/NiFe-LDH electrocatalyst has also been confirmed by long-term chronoamperometry (CA) analysis. Our work paves a facile controllable way for fabricating MOF/LDH heterostructure targets on MOR and underlines its potential to boost energy conversion efficiency through the manipulation of synergic components.
研究领域:
材料科学
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电化学
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能量转换
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催化
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产品关联
DOI
高影响因子
Nanoscale
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2024
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IF 5.8
Yufeng Wu,Zhiyan Hou,Changlong Wang
Renewable electricity-powered electrooxidation of 5-hydroxymethylfurfural (HMFOR) to FDCA offers a green and sustainable approach to producing an essential monomer for bio-polymers, provided that a highly efficient electrocatalyst is present. Herein, we show that the doping of scandium (Sc) into an NiFe-LDH electrocatalyst (Sc-NiFe-LDH) considerably promotes HMFOR by enhancing the formation of high-valence NiIII–O active sites, facilitating electron transport and HMF adsorption and suppressing the oxygen evolution reaction. In the presence of the Sc-NiFe-LDH electrocatalyst, an FDCA faradaic efficiency and selectivity of 96.5% and 99.5%, respectively, were achieved at a current density of >600 mA cm−2. The high performance of the Sc-NiFe-LDH electrocatalyst is the best among those of other reported electrocatalysts for this reaction, showing great promise in upgrading biomass to valuable chemicals. This work would inspire further studies on the rational design of novel and efficient electrocatalysts for green and sustainable energy transformations.
研究领域:
化学工程
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电催化
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可再生能源
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2024
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IF 8.5
Mengru Liu,Taotao Zhe,Fan Li,Limin Zhu,Shaohui Ouyang,Li Wang
The excessive use of nitrofurantoin (NFT) represents a threat to ecosystems and food safety, making it necessary to develop efficient and accurate detection methods. Herein, the Ru/NiFe-LDH-MXene/SPCE electrode was successfully synthesized by one-step electrodeposition and employed to the NFT electrochemical sensing. Combining 2D MXenes with multifunctional 2D layered double hydroxides (LDHs) creates synergistic interactions within the MXene-LDH heterostructures, modifying the electrochemical performance. Furthermore, the incorporation of noble metal nanoparticles and nanoclusters can significantly enhance electrochemical performance by promoting favorable interactions at the metal-carrier interface and optimizing the rearrangement of electronic structure. Based on this, the developed Ru/NiFe-LDH-MXene/SPCE sensor demonstrates remarkable sensitivity (152.44 μA μM −1 cm −2 ) and an ultralow detection limit (2.2 nM). Notably, the sensor was employed for NFT detection in food samples with satisfactory recoveries, making it a promising electrochemical sensor for the detection of NFT.
研究领域:
分析化学
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食品安全
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电化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
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2025
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IF 4.8
Jie Yang,Lixia Ma,Yuqi Zhang,Xuqian Zhao,Shouren Zhang,Luo Huang,Yunpeng Fang,Xiaojie Zhou,Jianghao Kang,Ruibin Jiang
The design of low-cost and highly efficient bifunctional electrocatalyst towards oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is challengeable, which limits the commercial application of rechargeable zinc-air battery. Herein, an efficient ORR and OER bifunctional electrocatalyst (NiFe-LDH/F x −FeN 4 /C) is composed of nickel/iron-based heterostructures sparsely grown on carbon black (CB) with single FeN 4 sites. The NiFe-LDH/F x − FeN 4 /C electrocatalysts are prepared through the pyrolysis of hemin chloride adsorbed on CB, followed by in-situ hydrothermal growth of NiFe-LDH/F x heterostructures. The NiFe-LDH/F x heterostructures are composed of NiFe-LDH, (NH 4 ) 3 FeF 6 , and NiF 2 . The elevated valence states of Fe and Ni in heterostructures significantly increase the OER activity. The mesopores and large pores of the NiFe-LDH/F x − FeN 4 /C facilitate the exposure of active sites and enhance mass transfer. These features contribute to the outstanding bifunctional activity of NiFe-LDH/F x − FeN 4 /C, achieving a half-wave potential of 0.906 V for the ORR, an OER overpotential of 246 mV at 10 mA cm −2 , and an extremely small voltage gap of 0.57 V. Additionally, the NiFe-LDH/F x − FeN 4 /C-based RZAB also exhibits a peak power density of 209 mW cm −2 and charging/discharging cycling stability for 445 h. This work establishes a novel strategy for the preparation of highly efficient bifunctional electrocatalysts through in-situ growth and heterostructure engineering.
研究领域:
电化学
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材料科学
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能量存储与转换
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纳米技术
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催化
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产品关联
DOI
高影响因子
Acta Pharmaceutica Sinica B
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2023
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IF 14.5
Yani Xu,Lan Yang,Min Li,Haozhou Shu,Na Jia,Yunzhen Gao,Rongying Shi,Xiaojia Yang,Zhirong Zhang,Ling Zhang
Osteosarcoma is usually resistant to immunotherapy and, thus primarily relies on surgical resection and high-dosage chemotherapy. Unfortunately, less invasive or toxic therapies such as photothermal therapy (PTT) and chemodynamic therapy (CDT) generally failed to show satisfactory outcomes. Adequate multimodal therapies with proper safety profiles may provide better solutions for osteosarcoma. Herein, a simple nanocomposite that synergistically combines CDT, PTT, and chemotherapy for osteosarcoma treatment was fabricated. In this composite, small 2D NiFe-LDH flakes were processed into 3D hollow nanospheres via template methods to encapsulate 5-Fluorouracil (5-FU) with high loading capacity. The nanospheres were then adsorbed onto larger 2D Ti 3 C 2 MXene monolayers and finally shielded by bovine serum albumin (BSA) to form 5-FU@NiFe-LDH/Ti 3 C 2 /BSA nanoplatforms (5NiTiB). Both in vitro and in vivo data demonstrated that the 5-FU induced chemotherapy, NiFe-LDH driven chemodynamic effects, and MXene-based photothermal killing collectively exhibited a synergistic “all-in-one” anti-tumor effect. 5NiTiB improved tumor suppression rate from <5 % by 5-FU alone to ∼80.1 %. This nanotherapeutic platform achieved higher therapeutic efficacy with a lower agent dose, thereby minimizing side effects. Moreover, the composite is simple to produce, enabling the fine-tuning of dosages to suit different requirements. Thus, the platform is versatile and efficient, with potential for further development.
研究领域:
纳米技术
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癌症治疗
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材料科学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2021
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IF 8.271
Han Zhang,Guoqiang Shen,Xinying Liu,Bo Ning,Chengxiang Shi,Lun Pan,Xiangwen Zhang,Zhen-Feng Huang,Ji-Jun Zou
Developing effective and practical electrocatalyst under industrial electrolysis conditions is critical for renewable hydrogen production . Herein, we report the self-supporting NiFe LDH-MoS x integrated electrode for water oxidation under normal alkaline test condition (1 M KOH at 25 °C) and simulated industrial electrolysis conditions (5 M KOH at 65 °C). Such optimized electrode exhibits excellent oxygen evolution reaction (OER) performance with overpotential of 195 and 290 mV at current density of 100 and 400 mA·cm −2 under normal alkaline test condition. Notably, only overpotential of 156 and 201 mV were required to achieve the current density of 100 and 400 mA·cm −2 under simulated industrial electrolysis conditions. No significant degradations were observed after long-term durability tests for both conditions. When using in two-electrode system, the operational voltages of 1.44 and 1.72 V were required to achieve a current density of 10 and 100 mA·cm −2 for the overall water splitting test (NiFe LDH-MoS x /INF || 20% Pt/C). Additionally, the operational voltage of employing NiFe LDH-MoS x /INF as both cathode and anode merely require 1.52 V at 50 mA·cm −2 at simulated industrial electrolysis conditions. Notably, a membrane electrode assembly (MEA) for anion exchange membrane water electrolysis (AEMWEs) using NiFe LDH-MoS x /INF as an anode catalyst exhibited an energy conversion efficiency of 71.8% at current density of 400 mA·cm −2 in 1 M KOH at 60 °C. Further experimental results reveal that sulfurized substrate not only improved the conductivity of NiFe LDH, but also regulated its electronic configurations and atomic composition, leading to the excellent activity. The easy-obtained and cost-effective integrated electrodes are expected to meet the large-scale application of industrial water electrolysis.
研究领域:
材料科学
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电化学
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可再生能源
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催化
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
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IF 5.383
Liming Ren,Chao Wang,Wen Li,Ruohao Dong,Hongxia Sun,Ning Liu,Baoyou Geng
Designing highly efficient bifunctional water splitting electrocatalyst is essential to ease the forthcoming energy crisis and the increasingly severe environmental problems. In this paper, NiFe-LDH@Ni 3 S 2 arrays on nickel foam (NF) are prepared via a facile two-step hydrothermal approach. The catalyst with a special structure of on-chip epitaxial growth of sheet grown vertically on nickel foam not only provides enhanced interface connections and massive exposed active sites but also accelerates the transmission of electronics. The experimental results demonstrate that Ni1Fe10-LDH@Ni 3 S 2 /NF possesses exceptional electrocatalytic performance for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) compared to individual NiFe-LDH and Ni 3 S 2 . It demands 230 mV to drive a current density of 50 mA cm −2 toward OER while it just needs 197 mV to afford 20 mA cm −2 for HER. Additionally, Ni1Fe10-LDH@Ni 3 S 2 /NF as both cathode and anode in a two-electrode system just requires 1.65 V to reach 10 mA cm −2 and still remains stable after a 12 h chronoamperometry measures. The as-synthesized electrocatalyst with improved electrocatalytic performance, outstanding long-term stability and low-priced is prospective for overall water splitting practical production.
研究领域:
材料科学
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电化学
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能源材料
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催化
✓ 已验证
产品关联
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2025
·
IF 6.9
Tianbao Liu,Weiguang Shi,Wei Li,Benxian Li,Xiaofei Fu,Zhiyong Chang,Sunhua Deng
Low to medium maturity shale oil, an essential energy source, faces challenges due to traditional pyrolysis methods, which are characterized by high energy consumption, low yield, and poor selectivity. Moreover, the inefficiencies in in-situ heat injection underscore the necessity for effective catalysts and improved heat transfer mechanisms involving water vapor. This study aims to elucidate the heat transfer enhancement and catalytic synergy of NiFe-layered double hydroxides (NiFe-LDH) in improving the in-situ pyrolysis efficiency of medium–low maturity oil shale via steam pyrolysis. Analyses conducted using GC–MS, Raman spectroscopy, and 13 C NMR demonstrated that the incorporation of NiFe-LDH with water vapor significantly enhances kerogen pyrolysis. This process increases the yields of alcohols, alkanes, and olefins by 1.32, 1.21, and 1.81 times, respectively, and it reduces the temperature needed to produce oil from kerogen. The catalyst helps turn aromatics into alcohols, olefins, and alkanes while breaking down residues into short-chain alkanes. It does this by weakening C–H bonds and removing hydrogen from methyl groups, ultimately reducing the energy required for heat injection by 38.17 %. Thermal and kinetic studies reveal that NiFe-LDH increases kerogen thermal diffusivity by 75.5 % and decreases specific heat capacity by 28.1 %, while elucidating the kinetic mechanism for a 59 °C elevation in the initial temperature of the main pyrolysis stage (increasing 6.1 times prefactor). A nucleation-reaction-order-geometric contraction multi-mechanism coupling model is established. This work proposes a novel “catalyst-water vapor pyrolysis-kerogen oxidation” synergistic enhancement theory, refining the multi-scale coupling mechanisms of heat/mass/chemical reactions during in-situ oil shale pyrolysis.
研究领域:
能源工程
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化学工程
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石油地质学
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材料科学
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催化
·
热分析
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）