ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Zhigang Zhang,Yuntao Hu,Xiangyu Sun,Guan Wang,Huaiqing Zhao
Catalytic oxidation plays a pivotal role in the chemical industry. Among various approaches, the strategy involving O2 as a green oxidant and H2O as a solvent for the efficient oxidation of organic compounds has garnered significant interest because it aligns with the principles of sustainable development. However, the inherent inertness of ground-state oxygen molecules poses a significant challenge in the development of non-noble-metal catalysts that can activate O2 to reactive oxygen species. Inspired by the regulatory effects of metal doping on the oxygen vacancy content and electronic properties of materials, we developed a bimetallic oxide catalyst MnxCoOy, derived from Mn-doped ZIF-67, for catalytic oxidation with oxygen. Comprehensive characterization (XRD, XPS, N2 adsorption–desorption, Raman, and FTIR) reveals that Mn species doping substitutes Co2+ at tetrahedral CoO4 sites, modulating the catalyst’s oxygen vacancy concentration and electronic distribution. The optimized MnxCoOy with suitable oxygen vacancy concentration exhibits superior performance in the selective oxidation of organic molecules containing benzyl sp3 C–H bonds. The cyclic and amplification experiments indicate the potential application value of the catalyst. This work provides fundamental insights into the design of multipurpose catalysts for catalytic oxidation through the metal doping strategy, which also offers a sustainable approach for obtaining carbonyl compounds.
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DOI
高影响因子
ANALYST
·
2022
·Vol. 147
·期 17
·3917-3923
·
IF 5.227
Feiyan Tang,Qing Hua,Xiaobin Wang,Feng Luan,Li Wang,Yanhong Li,Xuming Zhuang,Chunyuan Tian
As an efficient and easily available pesticide, imidacloprid (IM) has been widely used in agriculture to kill pests. However, threats to the ecological environment are becoming increasingly prominent, caused by abuse and pesticide residues. This paper reports a sensitive electrochemiluminescence (ECL) sensor based on upconverting nanoparticle functional zeolite imidazolate framework (UCNPs@ZIF-8) nanocomposites combined with molecularly imprinted polymers (MIPs) to successfully achieve the quantitative detection of IM. The composites exhibited a certain multi-faceted prismatic structure and the effective binding of UCNPs was demonstrated by characterization technology. In addition, a sensor with MIPs/UCNPs@ZIF-8/GCE as the working electrode exhibited outstanding ECL performance, including a strong and stable signal and excellent selectivity under optimal conditions. This sensor showed a good linear response to IM over a wide concentration range (0.1 ng L−1–1 mg L−1), with a limit of detection as low as 0.01 ng L−1. More significantly, it was successfully applied to the determination of IM concentration levels in food, which provides broad application prospects for the construction of pesticide ECL sensors.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhiwen Lei,Jinlai Shen,Jun Wang,Qi Qiu,Guangzhao Zhang,Shang-Sen Chi,Hongli Xu,Shuai Li,Weide Zhang,Yusheng Zhao,Yonghong Deng,Chaoyang Wang
The stable structure, high porosity and surface functionality endow metal organic frameworks (MOFs) nanoparticles as excellent nanofillers for high-performance poly (ethyleneoxide)-based solid polymer electrolytes (PEO SPEs). However, the agglomeration of MOFs severely limits their potential applications. Herein, a novel zeolitic imidazolate framework-90 nanofiller grafted with imidazole ionic liquid containing siloxane groups (ZIF-90-g-IL) is prepared by dehydration condensation reaction, which enables the uniform distribution of the nanofiller in PEO SPEs. The resulting composite PEO SPE with ZIF-90-g-IL nanofillers delivers higher ionic conductivity of 1.17 × 10 -4 S/cm at 30 °C and lithium ion transference number of 0.44, wider electrochemical stability window of 4.8 V, and stronger ability to inhibit lithium dendrite growth than the PEO SPE with unmodified ZIF-90. The strong interaction of ZIF-90-g-IL with PEO is caused by the chelation of quaternary ammonium cations of ionic liquid groups on the ZIF-90-g-IL surface with oxygen containing a lone pair of electrons of PEO, resulting in a uniform distribution of the nanofillers in PEO. The LFP||Li half cells with the PEO/ZIF-90-g-IL SPE exhibit good cycling performance with 71% capacity retention (101 mAh g −1 ) after 500 cycles at 2C under 60 °C, and show excellent cycling performance with 97.4% capacity retention (148 mAh g −1 ) after 30 cycles at 0.1C under 30 °C. The composite SPE is also used for high-voltage NCM811||Li half cells. The capacity retention is 63% (99 mAh g −1 ) after 100 cycles at 0.1C under 60 °C. The results imply ZIF-90-g-IL as effective nanofillers for SPEs showing a great potential application in all solid-state lithium metal batteries.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Laifeng Ma,Xueyi Zhang,Muhammad Ikram,Mohib Ullah,Hongyuan Wu,Keying Shi
The fabricated intercalated structure composed of a Co-based zeolitic imidazolate framework (ZIF-67) and expanded graphite (EG) has been prepared using a facile and simple one-pot hydrothermal reaction. This framework was used to detect heavy metal ions (HMIs) via a square wave anodic stripping voltammetry (SWASV) method for the first time. Here, the composite material is useful for the selective electrochemical detection of nanomolar Cd 2+ , Pb 2+ , Cu 2+ and Hg 2+ in aqueous solutions simultaneously or individually. The operational parameters such as pH, electrolyte, deposition potential, and deposition time were optimized to detect various HMIs. The electrochemical properties and applications of the modified electrode were also studied. The constructed electrochemical sensor displays good performance with a large electrochemically active surface areas, high sensitivity and low limit of detection (LOD). These impressive features originate from the synergistic effects of ZIF-67 and EG. This study proposes a new strategy for heavy metal ion detection using a novel morphology of a metal–organic framework (MOF) composite.
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高影响因子
TALANTA
·
2021
·
IF 6.057
Ya Ma,Yunlong Zhang,Lishi Wang
In this manuscript, a layer of 2-methylimidazole zinc salt (ZIF-8) membrane is deposited on the surface of glassy carbon electrode (GCE) modified with platinum nanoparticles (Pt NPs) by reduction electrochemical method to obtain ZIF-8/Pt NPs/GCE, and then used for the detection of ascorbic acid (AA). The deposition of Pt NPs on the surface of GCE can not only guide the nucleation and growth of ZIF-8 membrane, but also exert a synergistic effect with it to enhance conductivity. For ZIF-8 membrane, it can increase the active area of electrode and thus improve the electrochemical response of the sensor for AA. Influence factors such as the deposition current density , deposition time on the surface morphology of the modified electrode, and the detection performance of the modified electrode during the electrochemical deposition of ZIF-8 membrane were explored to get the best performance. In addition, influence of conditions such as sweep speed and pH of the test solution on the electrochemical response signal of AA were also studied. Under the best conditions, the linear range of AA detection by this sensor is from 10 μmol L −1 to 2500 μmol L −1 , and the detection limit is 5.2 μmol L −1 based on S/N = 3. What's more, the modified electrode also has good anti-interference ability, reproducibility and stability, and has achieved satisfactory results in the detection for AA in real samples.
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高影响因子
Nanoscale
·
2021
·Vol. 13
·期 5
·3227-3236
·
IF 7.79
Yinqing Sun,Yi Guan,Xiaochao Wu,Wanqing Li,Yongliang Li,Lingna Sun,Hongwei Mi,Qianling Zhang,Chuanxin He,Xiangzhong Ren
The rational design and construction of the efficient and robust non-noble metal bifunctional oxygen electrocatalysts is of critical significance due to the attention given to reversible metal–air batteries. In this paper, we report novel two-dimensional “senbei”-like Co9S8/CeO2/Co-NC nitrogen-doped carbon nanosheets (Co9S8/CeO2/Co-NC) derived from a unique 2D Co/Ce bimetallic ZIF. The phase transition from 3D spherical Co-ZIF to 2D Co/Ce-ZIF was achieved through the introduction of Ce ions. Profiting from the successful construction of the unique Co9S8/CeO2 heterostructure and the synergetic effect of two components, the as-prepared Co9S8/CeO2/Co-NC exhibited excellent electro-performance in both the oxygen evolution reaction (Ej=10 = 1.60 V) and oxygen reduction reaction (E1/2 = 0.875 V). Furthermore, when used as a bifunctional air electrode for Zn-air batteries, Co9S8/CeO2/Co-NC reached a high peak power density of ≈164.24 mW cm−2 at a high current density of ≈351 mA cm−2 and displayed an outstanding cycling stability of more than 668 h at 5 mA cm−2. This research provides new guidelines for preparing hybrid materials from cobalt-based sulfide species and CeO2 for electrocatalysis and energy storage or other fields.
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高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Ting-xu Wang,Si-ruo Chen,Ting Wang,Li-guang Wu,Yu-xing Wang
Polyethersulfone (PES) mixed-matrix membranes (MMMs) incorporating a co-nanofiller of ZIF-8 and poly(ionic liquid) were constructed via a facile one-pot microemulsion strategy, aiming to increase the flux and anti-fouling properties of the original PES membranes. First, ZIF-8 nanoparticles were synthetized in the reverse microemulsion using 1-butyl-3-methylimidazolium (BmimOTF) ionic liquid as a surfactant and 1-vinyl-3-ethylimidazolium tetrafluoroborate (VeimBF 4 ) polymerizable ionic liquid as an oil phase. Subsequently, the oil phase VeimBF 4 in the reverse microemulsion was polymerized, and a latex containing ZIF-8 nanoparticles and poly(VeimBF 4 ) was formed. Finally, MMMs were constructed by blending the latex with PES via the phase-inversion method. The microstructures of ZIF-8 and the MMMs were characterized by TEM, SEM, FTIR, XRD, and XPS analysis. Results showed that the mean size of ZIF-8 are small (10 ∼ 35 nm). Addition of the poly(VeimBF 4 ) and ZIF-8 nanoparticles increased the pore size and hydrophilicity of MMMs. The maximum water flux was 105 L m −2 ·h −1 ·bar −1 and 90% flux recovery were obtained after five cycles of filtration, and little decrease of WCA appeared on all MMMs after the repeated experiment, indicated the good stability of MMMs. Compared with PES ultrafiltration membrane, pure water flux and flux recovery rate of the MMMs increased by 15 and 2.8 times respectively.
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高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Qing Yang,Hongbin Pu,Da-Wen Sun
The sensitive detection of quinalphos in food is crucial due to its improper use and the potential for serious harm. Surface-enhanced Raman spectroscopy (SERS) technology, provides a new way for rapid and ultra-sensitive detection. To exploit the molecular sieving effect of metal-organic frameworks (MOFs) in mitigating interference from food matrix components during pesticide residue detection, a novel chiral spiny L-Au@Ag@ZIF-8 (L-AAZ) three-layer core-shell composite was developed as an effective SERS substrate, with chiral L-AABPs providing abundant “hot spots” and spiny ZIF-8 shell provides excellent absorption properties, causing a five-fold increase in SERS intensity compared to traditional Au@Ag NPs. The experimental results revealed that L-AAZ achieved a high enhancement factor (EF) of 3.15 × 10 5 , a low limit of detection (LOD) of 6.56 × 10 −10 M, and a relative standard deviation (RSD) of 14.6 % for malachite green (MG), indicating its superior SERS sensitivity and consistency. Moreover, it demonstrated stable performance, maintaining good storage stability for up to 55 days. The substrate's suitability for the actual fruit sample (tangerine) was confirmed, showing an LOD of 10 ng/mL, demonstrating its capability for rapid and sensitive detection of trace amounts of pesticide residues in food.
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DOI
PubMed
高影响因子
FUEL
·
2025
·
IF 7.5
Jui-Yeh Rau,Yulin Xie,Zhujian Mao,Youyi Wang,Jiayi Hao,Shihan Cai,Jian Huang
The development of high-performance hydrogen separation membranes is a crucial step in the advancement of sustainable energy technologies and the achievement of carbon neutrality. In this study, zeolitic imidazolate framework-8 (ZIF-8) membranes with an ultra-high selectivity for hydrogen over carbon dioxide were successfully synthesised on polydopamine/3-aminopropyltriethoxysilane (PDA/APTES) modified Al 2 O 3 supports. The interfacial layer exhibited excellent adhesion and a high density of functional groups, which served as nucleation sites for the growth of ZIF-8 crystals. The resulting membranes exhibited a dense and defect-free structure, achieved through an optimised 12 h in-situ growth process. The membranes exhibited excellent gas separation performance, with hydrogen(H 2 ) permeance reaching 14 × 10 −7 mol·Pa −1 ·m −2 ·s −1 and ideal selectivities of 20.3, 22.1, and 26.8 for H 2 /CO 2 , H 2 /N 2, and H 2 /CH 4 , respectively, at 25 °C and 0.2 MPa. In comparison with the ZIF-8 membrane that was synthesised on a pure PDA modified layer, the H 2 permeance increased by 14.8 %. Notably, the selectivity for H 2 /CO 2 increased by almost threefold. Moreover, long-term stability tests demonstrated the durability and robustness of the ZIF-8 membranes under operational conditions.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xue Li,Jingjia Zhang,Qianhui Li,Shuimei Yang,Chengze Wei,Feng Zhang,Zhenbo Wang
Preparing low-cost and high-activity methanol oxidation reaction (MOR) electrocatalysts is a key approach for renewable energy technologies. However, due to the high price and instability of platinum-based catalysts, the addition of transition metals to alloy catalysts on the basis of platinum is a prevalent strategy to improve catalytic activity and stability. Herein, we prepared a PtCu alloy catalyst that is highly dispersed on an N-doped carbon dodecahedron (PtCu/N-DC) by a simple pyrolysis method. The experiments demonstrate that the robust interaction between N-doped porous carbon support and PtCu alloy imparts strong stability to the catalyst. At the same time, there is a strong interaction between Cu atom and Pt atom, doping with Cu can adjust its surface electronic configuration of Pt, thereby improving the MOR performance of the catalyst. With a platinum loading of just 10 % compared to the 20 % in commercial Pt/C, PtCu/N-DC exhibits mass activity and specific activity that are 4.1 times and 5.8 times higher, with significant catalytic activity and a high level of resistance to carbon monoxide poisoning. Theoretical analysis indicates that the PtCu/N-DC catalyst exhibits a low energy barrier during the critical steps, which aligns with the enhanced electrocatalytic activity demonstrated in the experimental findings.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Siqi Hou,Wei Ding,Shuang Liu,Huaili Zheng,Jun Zhai,Liuwei Yang,Zheng Zhong
Elimination of As(III) from water has gotten more attention in comparison with As(V) due to its higher mobility and toxicity. In this work, we provide an effective method by integrating a cobalt-based metal–organic framework ZIF-67 and sulfite (S(IV)) to purify As(III)-laden water. The coupled oxidation with adsorption process (i.e., As(III) removal by ZIF-67/S(IV)) surpasses a divided preoxidation-adsorption process (i.e., As(V) removal by ZIF-67) for arsenic removal from the multi-component water containing various coexisting anions. Herein, the mechanism investigation corroborated that the S(IV) plays dual roles as a complexing ligand and a precursor of oxysulfur radicals. The enhanced As(III) removal is attributed to the S(IV) activation on the ZIF-67 surface via various reactions (e.g., surface complexation and intramolecular electron transfer), which not only generates SO 4 − radicals for rapid oxidation of As(III) to As(V), but also provides more adsorption sites for the immobilization of the oxidized product (As(V)). Furthermore, the combined process can rapidly treat arsenic in the realistic contaminated water from 242 to 7 μg L −1 within 15 min, directly meeting the provisional maximum contaminant level (<10 μg L −1 ). Overall, the proposed work may aid the rational design of S(IV) mediated oxidation-adsorption process to remove arsenic from a variety of contaminated waters.
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高影响因子
CARBON
·
2025
·
IF 11.6
Hao Lu,Xianchu Wang,Chenyu Wang,Qihang Wang,Jingjing Xie,Weiming Wang,Zhengyi Fu,Zhaoyong Zou
Zeolitic Imidazolate Frameworks (ZIF-8) has emerged as promising candidate for alleviating the aggregation of Fe 3 N-catalysts, exhibiting significantly improved oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for rechargeable zinc-air batteries. To further improve the catalytic performance, it is crucial to fabricate ZIF-8 with hierarchically porous structures, which remains challenging due to the rapid crystallization kinetics and the weak interactions. Inspired by biological porous materials, we developed a novel method using 1,3,5-trimethylbenzene TMB as a mediating molecule to dynamically regulate the organic-inorganic interface between templates and ZIF-8 precursors, achieving the micro-meso-macropores of ZIF-8, which synergistically enhances mass transport and active site accessibility. Additionally, TMB preserves the weakly alkaline environment required for ZIFs’ structural integrity by leveraging its hydrophobic co-solvent effect. The as-synthesized Fe 3 N-HPZIF-8 catalyst integrates Fe 3 N active sites, hierarchically porous structures, and pyrrolic-N dopants, resulting in the exceptional bifunctional activity in alkaline media (ΔE = 0.619 V), exceeding most benchmark catalysts. When integrated into zinc-air batteries, a peak power density of 205.2 mW cm -2 is achieved. This work presents a generalizable synthetic approach for high-performance metal-air battery catalysts.
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高影响因子
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