Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Wanqi Zhang,Runchen Zhu,Fakang Pan,Chao Xie,Junyong He,Zijian Wu,Yulian Li,Yahui Li,Jiandong Lu,Peidong Hong,Lingtao Kong
The development of suitable catalysts poses a challenge for the peroxymonosulfate (PMS) activation system used in decontamination process. Here we constructed a series of vacancy-strengthened Cu/Co composite oxides (CuCoO) composed of CuCo 2 O 4 and CuO containing multiple Lewis acid sites. The results demonstrate that the as-prepared CuCoO-2 exhibited exceptional activation performance, broad-ranging degradation capacity, remarkable reusability and stability. The optimized CuCoO-2+PMS system achieved complete removal of methylene blue (MB) in 40 min, while maintaining a degradation efficiency of above 86 % even after 5 cycles. A comprehensive survey revealed that hydroxyl radical (·OH), sulfate radical (SO 4 .- ) and singlet oxygen ( 1 O 2 ) collectively contribute to the degradation of MB in the CuCoO-2+PMS system. Especially, 1 O 2 was the dominant active species. The synergism of various Lewis acid sites (Cu +/2+ , Co 2+/3+ and V O/N ) as unsaturated surface-bound centers played a pivotal role in promoting non-radical-driven activation of PMS. Meanwhile, the generated V O/N facilitated enhanced metallic valence circulation in CuCoO-2, strengthening electron mediation between PMS and MB. Additionally, possible degradation pathways and toxicity evaluations of MB and its intermediates were proposed. In conclusion, this work offers valuable insights into PMS activation by vacancy-strengthened CuCoO and is of great significance for water purification.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2019
·Vol. 411
·期 17
·3801-3810
·
IF 3.286
Huang Yuanlin,Liang Guangzhao,Lin Tianran,Hou Li,Ye Fanggui,Zhao Shulin
The convenience of colorimetric sensors is useful for practical applications. In this work, we constructed a novel colorimetric sensor with magnetic separation ability that can be operated in nearly neutral conditions and achieve one-step detection of metabolites. Magnetic Cu doped Fe 3 O 4 @FeOOH magnetic nanocomposite (Cu/Fe 3 O 4 @FeOOH) with an oxygen vacancy was prepared by a one-step self-assembly hydrothermal method, and fully characterized by different methods. The oxygen vacancy generated by the incorporation of Cu 2+ cations into the Fe 3 O 4 @FeOOH structure was confirmed to be a vital reactive site for enhancing the catalytic activity, which opens up a new way of designing highly efficient enzyme mimics. Benefiting from its inherent horseradish-peroxidase-like activity, a simple and selective enzyme-based colorimetric sensor was developed for one-step detection of H 2 O 2 and cholesterol, and 3,3′,5,5′-tetramethylbenzidine was catalyzed by H 2 O 2 to generate a colored product of oxidized 3,3′,5,5′-tetramethylbenzidine for signaling. H 2 O 2 and cholesterol can be linearly detected in the same range from 0.01 to 0.4 mmol L -1 with detection limits of 0.0075 mmol L -1 and 0.0082 mmol L -1 , respectively. The proposed colorimetric sensor has satisfactory reusability, accuracy, and practicability in human serum samples, indicating its potential application for the detection of different metabolites in the fields of life science and analytical science.
Graphical abstract
研究领域:
分析化学
·
生物传感
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材料科学
·
生命科学
✓ 已验证
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2020
·Vol. 22
·期 23
·4005-4013
·
IF 3.117
Baolin Liu,Yizhao Li,Shaojun Qing,Kun Wang,Jing Xie,Yali Cao
Highly dispersed surface Cu species and oxygen vacancies are important for CuOx–CeO2 catalysts in many reactions, but it is difficult to increase the concentrations of highly dispersed Cu species and oxygen vacancies simultaneously by only adding a Cu component. Herein, CuOx–ZrO2–CeO2 (CZC) nanocatalysts with different ratios of Cu/Zr have been effectively produced by a simple solvent-free synthetic strategy. The effect of Zr doping on the structure and reactivity of the CuOx–CeO2 catalysts has been investigated with the help of carbon monoxide (CO) oxidation and 4-nitrophenol (4-NP) reduction as model reactions. It is revealed that the introduction of Zr relieved the agglomeration of surface Cu species, produced more oxygen vacancies in the interior and Cu+ species on the surface of the catalyst, and increased the reducibility of CuOx–CeO2. The CZC catalysts show remarkably enhanced catalytic activity due to the abundant surface active sites and the improved redox properties provided by the suitable doping of Zr into CuOx–CeO2. This work not only offers a practicable way to reconstruct the distribution of active metals on the metal oxide support but also provides a high-efficiency strategy to prepare oxide catalysts with excellent catalytic performance.
研究领域:
催化化学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2020
·Vol. 9
·期 3
·710-718
·
IF 5.344
Zhengdi Wang,Liyang Fu,Yu Zhu,Sa Wang,Guohong Shen,Lan Jin,Ruizheng Liang
The combination of chemodynamic therapy (CDT) with photothermal therapy (PTT) is an efficacious strategy in cancer treatment to acquire satisfactory therapy efficiency in the endogenous redox reaction and external laser induction. In this work, we have designed Ce doped Cu–Al layered double hydroxide (CAC-LDH) ultrathin them through a bottom-up synthesis method, and further loaded them with indocyanine green (ICG). The synthesized ICG/CAC-LDH was used as a Fenton-catalyst and photothermal agent. With the Fenton activity, the ICG/CAC-LDH nanosheets could decompose H2O2 and exhibit a low KM value (1.57 mM) and an ultra-high Vmax (4.88 × 10−6 M s−1) value. Due to the presence of oxidized metal ions, ICG/CAC-LDH could induce intracellular GSH depletion and reduce Cu2+ and Ce4+ to Cu+ and Ce3+, respectively. The generated Cu+ and Ce3+ further reacted with local H2O2 to generate toxic hydroxyl radicals (˙OH) via the Fenton reaction. Owing to the obviously enhanced absorption of ICG/CAC-LDH at 808 nm, the photothermal efficiency of ICG/CAC-LDH increased significantly compared with ICG (ΔT = 34.7 °C vs. 28.3 °C). In vitro studies substantiate the remarkable CDT/PTT efficacy, with complete apoptosis of HepG2 cancer cells (the cell viability is less than 2%) treated with 25 μg mL−1 of ICG/CAC-LDH. Furthermore, ICG/CAC-LDH could also act as a contrast agent for cancer magnetic resonance imaging (MRI) and photoacoustic imaging (PAI). These results demonstrate the potential of ICG/CAC-LDH as an integrated agent for dual-modal imaging and synergistic CDT/PTT.
研究领域:
纳米技术
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癌症治疗
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生物医学工程
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材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xingyue Yang,Lei Wang,Shijie Zhou,Shilong Zhang,Yongfang Xu,Yujie Bian,Zhaowei Tian,Yusen Yang,Min Wei
Liquid organic hydrogen carriers (LOHC), which involve reversible catalytic hydrogenation/dehydrogenation cycles, have attracted considerable attention. This study investigates Cu/CuAlO x catalysts with unique Cu 0 –Cu + interfacial sites, which are prepared via structural topological transformation of layered double hydroxide (LDH) precursors. The optimized Cu/CuAlO x catalysts exhibit exceptional catalytic activity in 1,2,3,4-tetrahydroquinoline (THQ) dehydrogenation, achieving a complete conversion of THQ within 1.5 h and a turnover frequency (TOF) value amounts to 19.94 h −1 at 150 °C, which stands at the highest echelon compared with previously reported heterogeneous catalysts. Furthermore, the catalyst also exhibits excellent performance in quinoline hydrogenation (yield >99 %) after 6 h at 60 °C, and the TOF value reaches up to 7.01 h −1 . A comprehensive investigation based on XPS, TEM and XAFS verifies the dual active states Cu 0 and Cu + sites coexisting on nanoparticle surfaces. Both experimental studies ( in situ DRIFTS and XPS) and DFT calculations reveal the pivotal role of the Cu 0 − Cu + synergistic effect in dictating catalytic behavior: the Cu + species preferentially adsorb and activate the N − H bonds and C − H bonds in N-heterocycles; Whereas the Cu 0 site facilitates efficient reassociation of surface adsorbed H atoms and product desorption (H 2 ). This work exhibits substantial potential for implementation in hydrogen storage technologies, offering a viable pathway towards efficient LOHC utilization in clean energy systems.
研究领域:
催化化学
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材料科学
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氢气储存
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化学反应工程
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表面化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-14
·
IF 14.7
Zhang Minghao,Sun Chenxi,Chen Guanhong,Kang Yuanhong,Lv Zeheng,Yang Jin,Li Siyang,Lin Pengxiang,Tang Rong,Wen Zhipeng,Li Cheng Chao,Zhao Jinbao,Yang Yang
Rechargeable aqueous zinc-metal batteries, considered as the possible post-lithium-ion battery technology for large-scale energy storage, face severe challenges such as dendrite growth and hydrogen evolution side reaction (HER) on Zn negative electrode. Herein, a three-dimensional Cu-In alloy interface is developed through a facile potential co-replacement route to realize uniform Zn nucleation and HER anticatalytic effect simultaneously. Both theoretical calculations and experimental results demonstrate that this bifunctional Cu-In alloy interface inherits the merits of low Zn-nucleation overpotential and high HER overpotential from individual copper and indium constituents, respectively. Moreover, the dynamical self-reconstruction during cycling leads to an HER-anticatalytic and zincophilic gradient hierarchical structure, enabling highly reversible Zn chemistry with dendrite-free Zn (002) deposition and inhibited HER. Moreover, the improved interface stability featured by negligible pH fluctuations in the diffusion layer and suppressed by-product formation is evidenced by in-situ scanning probe technology, Raman spectroscopy, and electrochemical gas chromatography. Consequently, the lifespan of the CuIn@Zn symmetric cell is extended to more than one year with a voltage hysteresis of 6 mV. Importantly, the CuIn@Zn negative electrode is also successfully coupled with high-loading iodine positive electrode to fabricate Ah-level (1.1 Ah) laminated pouch cell, which exhibits a capacity retention of 67.9% after 1700 cycles.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Biosurface and Biotribology
·
2025
·Vol. 11
·期 1
·e12090
·
IF 1.8
Yi Duan,Qi Wu,Jiangtao Lin,Yourong Duan,Qi Wang,Yuanyuan Li
In this study, the authors designed a paper-based electrochemical immunodevice modified with copper embedded in copper sulphide hollow nanocages wrapped with Au nanoparticles (Cu@CuS@Au NPs) for the specific detection of prostate-specific antigen (PSA), aiming to advance point-of-care testing. The large specific surface area of Cu@CuS nanocages enables efficient capture of biotin antibodies, leading to the direct amplification of the signal through the inhibition of electron transport in the redox process of Cu, eliminating the need for universal redox electron mediators. Additionally, Au NPs on the surface of Cu@CuS can accelerate charge transfer and conjugate with anti-PSA. The hierarchical morphology and structure of Cu@CuS nanocages were characterised using scanning electron microscopy and transmission electron microscopy. The fabrication process of the immunodevice was monitored using cyclic voltammetry and electrochemical impedance spectroscopy analyses. PSA was sensitively detected using differential pulse voltammetry on this proposed immunodevice within a linear range from 0 to 100 ng/ml ( R 2 = 0.996), achieving a low detection limit of 0.077 ng/ml. In addition, the practicality of the developed immunosensor has been proven by successfully detecting PSA in human serum samples obtained from clinical settings. The integration of electrochemical sensors and microfluidic devices holds promise for developing cost-effective approaches in clinical immunoassays.
研究领域:
医学诊断
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生物传感器
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Zhuo Zhang,Liying Tian,Hongyu Zhang,Hai Xu,Panpan Dong,Yayun Zhang,Donghui Long
Solid-state lithium batteries using solid composite polymer electrolytes (CPEs) with great thermal and mechanical stabilities are believed to be the next-generation advanced electrochemical devices, but they suffer from low ionic conductivity at room temperature and a poor interface between the electrode and the electrolyte. Herein, we present a poly(ethylene oxide) (PEO)-based CPE allowing rapid Li+ migration enabled by coordinating the anions on the exposed metal sites of a metal–organic framework (MOF). The CPE contains MOF-74 fillers, a PEO matrix, and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). Owing to the strong anchoring effect of MOF-74 fillers on TFSI– verified by calculations and measurements, the CPE exhibits a high ionic conductivity (5.5 × 10–5 S·cm–1 at 30 °C), a wide electrochemical stability (4.8 V), and an improved Li+ transference number (0.36). Besides, the adjusted local current density promotes the interfacial stability against the Li anode in a Li symmetric battery, which performed well at a current density of both 0.2 and 0.4 mA cm–2. With these advantages, the all-solid-sate LiFePO4 battery fabricated exhibited stable cycling performances (161 mA h g–1 and maintained 152 mA h g–1 after 300 cycles at 0.5 C). This strategy gives fresh reference to the utilization of different MOFs and polymers in building high-performance solid-state lithium batteries.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
Advanced Fiber Materials
·
2024
·Vol. 6
·期 2
·444-457
·
IF 17.2
Xiao Yuanxiang,Jiang Jingjing,Cai Rui,Fu Jiajia,Xiang Shuangfei,Zhao Shujun,Fu Feiya,Diao Hongyan,Liu Xiangdong
Unpredictable pandemics are likely to pose a significant global threat in the future, and biologically protective textiles will play critical roles in controlling the spread of pathogens during outbreaks. Herein, we present a novel metal–organic framework (MOF) composed of repeating units of a Cu(II)/(L-Cys) 2 complex formed through coordination bonds between Cu(II) and L-Cys, while being interconnected by ionic bonds involving Cu(II) and the carboxylate group of L-Cys. After covalently embedding the MOF nanofibers onto cotton fiber surfaces, the resulting fabrics exhibit remarkable virucidal and antibacterial capabilities. Remarkably, even after 200 friction or 50 laundering cycles, the high antiviral ability to inactivate all phi- × 174 within 10 min was maintained, and the bacterial reduction rate against E. coli and S. aureus remained nearly at 100%. The remarkable virucidal effect of the L-Cys@Cu MOF structure is elucidated through a series of α-amylase denaturation simulation tests, providing the first experimental demonstration of the antiviral mechanism, whereby MOF nanofibers induce protein denaturation to inactivate viruses. Moreover, cytotoxicity assessments confirm that the fabrics adorned with MOF nanofibers are safe for human skin. These advantages are promising for the development of protective textiles, highlighting the great potential of nanoscience in combating pandemics. Graphical Abstract
研究领域:
材料科学
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纳米技术
·
纺织工程
·
生物医学工程
✓ 已验证
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
En-Hui Yuan,Meng Li,Ming-Hui Yang,Xiaosheng Huang,Kun Zhang,Weiliang Han,Zhicheng Tang,Zhong-Wen Liu
A direct hydrothermal synthesis strategy is developed to prepare the Cu–Fe-ZSM-5 zeolites by using the ethylenediaminetetraacetic acid disodium dihydrate (EDTA-2Na·2H 2 O) chelated Cu 2+ and Fe 3+ precursors as metal sources. During the crystallization, the metal chelates were spontaneously embedded into the ZSM-5 crystals and subsequently transformed to the zeolites encapsulated copper and iron species after removing the chelating agent via the high-temperature calcination . Rigorous characterizations indicate that the resulted Cu 2+ /Cu + and Fe 3+ /Fe 2+ species are formed ultra-small nano-composites with an average diameter of ∼2.2 nm and highly dispersed in the ZSM-5 zeolite crystals. The acidity of the ZSM-5 zeolites is subtly modulated by the encapsulated Cu–Fe nano-composite. As expected, the as-prepared Cu–Fe-ZSM-5 exhibits outstanding catalytic performance for the selective catalytic reduction of NO x with ammonia (NH 3 -SCR) in the broad reaction temperature ranges of 220–480 °C, which is much better than the Cu–Fe/ZSM-5 prepared with the conventional wetness impregnation method. Furthermore, the resultant zeolites show high stability and good tolerance to H 2 O and SO 2 , and it is very competitive for practical application to eliminate NO x . The developed one-pot hydrothermal synthesis route by using EDTA-2Na·2H 2 O as chelating agent is very convenient and easily reproducible, providing a general guideline to design and fabricate the superior transition metal modified zeolite catalysts for NH 3 -SCR and the related reactions.
研究领域:
催化
·
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Matter
·
2025
·
IF 17.5
Bohan Li,Yongsheng Sun,Yuzhen Wang,Jiance Jin,Kai Han,Yan Xu,Zhiguo Xia
Highly transparent and large-area scintillator film is highly desirable for next-generation X-ray imaging and detection. Herein, we develop a rapid and in situ synthesis strategy to fabricate polymer scintillator film composed of (C 14 H 15 P) 4 Cu 4 I 4 glassy cluster gel (M1-GCG). The large-area M1-GCG film of 20 × 12 cm was obtained by in situ UV photopolymerization within 30 s, showing ∼90% transmittance in the broad spectral region of 400–1,000 nm, in which Cu(I) iodide clusters coordinated by phosphine ligands are generated as a glassy form in the polymer network structure and uniformly distributed under supramolecular interactions, as the polymer monomer is polymerized and cross-linked under ultraviolet light. We develop a brand-new chemical synthesis route toward polymer-based composite scintillator film, and the M1-GCG film with high transparency and scintillation properties, as well as high-resolution X-ray imaging ability, shows extraordinary potential for large-area medical imaging and industrial non-destructive detection.
研究领域:
材料科学
·
核工程
·
光学材料
·
辐射探测
·
高分子化学
·
医学成像技术
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Ye Wang,Pan Gao,Dan Zhao,Tongrui Liu,Sitong Zhou,Miao Yang,Shiping Liu,Bing Li,Yida Zhou,Wenhao Cui,Guangjin Hou,Peng Tian,Zhongmin Liu
Silicoaluminophosphate (SAPO) molecular sieves possess diverse architectures and exceptional high-temperature hydrothermal stability, rendering them important acid catalysts. However, enhancing acid concentration of certain SAPO materials remains challenging, which limits their catalytic applications. Here, we report the synthesis of a series of SAPO materials using a developed SAPO precursor plus dual template (SPDT) strategy. A variety of SAPO materials characterized by high silica content and enhanced acidity, such as SAPO-34/56 intergrowths, SAPO-56, and SAPO-17, have been synthesized and thoroughly characterized using various techniques including integrated differential phase-contrast scanning transmission electron microscopy, two-dimensional solid-state nuclear magnetic resonance spectroscopy, and continuous rotation electron diffraction. The use of silica-enriched SAPO precursor combined with the flexible selection of the second template enables the crystalline phase regulation and improves the Si atoms incorporation into the framework. Notably, the synthesized SAPO-17 with abundant Si(4Al) species and unprecedentedly high acid density exhibits exceptional DeNO x activity after Cu loading, with NO x conversion exceeding 90% at 175–700 °C. This outstanding performance can be attributed to the unique ERI structure and the increased acidity of SAPO-17. This work not only presents an effective method for synthesizing SAPO molecular sieves with enhanced acidity but also offers a new perspective for expanding the active temperature range of the ammonia selective catalytic reduction reaction.
研究领域:
材料化学
·
催化化学
·
无机非金属材料
·
环境催化
·
分子筛科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）