CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Cheng Chen,Li Liu,Jing Guo,Lixiang Zhou,Yeqing Lan
Sulfur-doped copper-cobalt bimetallic oxides (S-CuYO) with abundant Cu(I) were successfully synthesized by a co-precipitation method and were for the first time utilized to activate peroxymonosulfate (PMS) for the degradation of chloramphenicol (CAP). For comparison purposes, sulfur-doped monometallic oxides (S-CuO and S-CoO) and non-doped copper-cobalt bimetallic oxide (CuCoO-1) were also prepared via the same processes. The results demonstrated that S-CuCoO had the highest catalytic activity among the catalysts. The sulfur-doped catalyst significantly improved the catalytic performance and stability. More than 98% of CAP (20 mg/L) was removed within 15 min at the initial pH = 5. The superior catalytic activity of S-CuCoO mainly resulted from the synergy of Cu(I) and Co(II). The presence of Cu(I) improved the conversion of Co(III) to Co(II), which maintained the high catalytic performance of S-CuCoO. In addition, the produced Cu(II) was further converted to Cu(I) by lattice oxygen (O 2− ), ensuring an adequate supply of Cu(I) in the catalyst. Radical quenching experiments revealed that both the SO 4 − and OH radicals were generated by the interaction of S-CuCoO with PMS, thereby contributing to the efficient degradation of CAP and the OH radicals played a larger role. The main intermediates of the CAP degradation were identified by high-performance liquid chromatography–mass spectrometry (HPLC-MS/MS). Theoretical calculations of the frontier electron densities (FEDs) were performed to determine the possible degradation pathways of CAP.
研究领域:
环境化学
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材料科学
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催化
·
水处理
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Jianming Wu,Xi Cheng,Yulin Li,Guisheng Yang
In this study, Fe 3 O 4 -nanoparticles-contained polyamide 6 (PA 6) microparticles (FP) were developed by a first dispersion of Fe 3 O 4 -nanoparticles in ε-caprolactam (CL) monomer in the presence of polystyrene (PS) and a subsequent in situ CL open polymerization into PA 6, followed by PS removal. The FP microparticles (as magnetic separation material) and nanochitin (n-CT, as an effective metal-cation natural adsorbent) were then in situ encapsulated into poly(vinyl alcohol)-enhanced chitosan hybrids (PVA/CTS) to form biodegradable nanocomposite hydrogels (FPCC) with magnetic separation ability. The FPCC hybridized hydrogels enabled about 1.7-fold Cu(II) adsorption capacity as compared to the pure PVA/CTS hydrogels with a Cu(II) adsorption value of 38.7 mg/g. More attractively, the adsorption equilibrium could be achieved within 10 min, which is quicker than many previous adsorbents. Furthermore, simulation results indicated that Cu(II) adsorption behaviors of the hybrid hydrogels conform to a pseudo-second-order kinetic model and a Langmuir isotherm model.
研究领域:
材料科学
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环境工程
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2024
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IF 10.7
Chao Liu,Qing Huang
Nanozymes are potential candidates for constructing sensors due to their adjustable activity, high stability, and high cost-effectiveness. However, due to the lack of reasonable means, designing and preparing efficient nanozymes remains challenging. Herein, inspired by the property of natural laccase, we applied the novel and facile low-temperature plasma (LTP) technology to fabricate a series of different base-ligand Cu metal organic framework (MOF) nanozymes (namely, A-Cu, G-Cu, C-Cu and T-Cu nanozymes) with laccase-like activity successfully. Owing to the different catalytic capacities of four types of base-Cu-MOF nanozymes in the response to five common effective bioactive substances, we constructed the nanozyme-encoded array sensor for the identification of different bioactive compounds. As a result, the four-channel colorimetric sensor array was constructed, in which four laccase-like nanozymes were utilized as the sensing units, achieving high-throughput, high-sensitivity and rapid detection/identification of five common bioactive compounds in the concentration range of 1.5–150 μg mL −1 through different color output patterns. It is worth noting that the as-prepared sensor array can successfully distinguish the natural bioactive compounds in a variety of real samples. Furthermore, with the assistance of smartphones, we also designed a portable smart sensing approach for detecting the bioactive compounds effectively in food. This study has therefore not only provided an effective way for preparation highly effectively nanozymes, but also established a new sensing platform for intelligent sensing of bioactive components in food.
研究领域:
材料科学
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分析化学
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生物技术
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食品科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2025
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IF 3.5
Jinyi Ren,Sijia Liu,Jing Zhang,Xinfu Zhao,Shimo Yu,Zhipeng Yuan,Qingliang Guo,Xiaodong Shen,Xibin Yi
Developing highly efficient photocatalysts is crucial for solar-driven wastewater treatment, particularly in enhancing catalytic efficiency and visible-light response. In recent years, most researchers have utilized hydrothermal methods to integrate TiO₂ with graphene aerogels, thereby improving charge separation efficiency. However, severe buildup of graphene sheets will result in insufficient absorption of visible light. To address the limitation, this work directly used titanium dioxide aerogel as the framework, introduced graphene and nano-Cu particles, and combined the sol-gel method to construct a TiO 2 -GO-Cu ternary aerogel structure(TGCA), achieving the multi-component synergistic effect of the active components. The phase composition and mesoporous structure of the material were characterized by scanning electron microscopy, ultraviolet-visible spectrophotometry, N 2 adsorption test, etc. A large specific surface area of 692.9 m 2 /g and excellent pore structure were achieved. Moreover, under visible light irradiation, the degradation efficiency of Rhodamine B (RhB) reached 100% within 30 minutes, and the band gap was reduced to 2.75 eV. After eight cycles, the photocatalyst retained 76.18% of its degradation efficiency, outperforming most TiO₂-graphene materials. This study significantly improved the photocatalytic performance of the catalyst through structural regulation, optimization of electron transport, and enhancement of light absorption. It thereby offers a feasible approach and valuable reference for solar-driven wastewater treatment technologies.
研究领域:
材料科学
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环境科学
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纳米技术
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光催化
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Science of Advanced Materials
·
2022
·Vol. 14
·期 8
·1410-1418
·
IF 1.067
Xin Jia-Ying,Li Yue,Liu Feng-Yuan,Sun Li-Rui,Wang Yan,Xia Chun-Gu
Cu(II) adulteration in preserved vegetables by unreliable producers to increase their visual appeal or compensate for natural colour changes is most common. Methanobactin (Mb) is a Cu(II)-coordinated peptide, which plays crucial role in Cu(II) capture and absorption and the catalysis
of Cu(II)-containing methane monooxygenase in methanotrophs. In this study, Mb-functionalized gold nanoparticles (Mb-AuNPs) was applied to develop a dual readout colorimetric detection for Cu(II) adulteration in preserved vegetables. In the presence of Cu(II), Mb-AuNPs was assembled into nanocluster
driven by Cu(II)/Mb coordination, and the assembly process was monitored by the visible spectrum on the variation of surface plasmon resonance peak. The results showed that, Mb-AuNPs possessed excellent peroxidase-like activity after Cu(II) coordination. In the presence of Mb-AuNPs, the amount
of Cu(II) obviously affected the rate of hydroquinone oxidation by H2O2 and the change of A246. The visible and ultraviolet dual-readout detection system containing Mb-AuNPs, hydroquinone and H2O2 exhibited high sensitivity and selectivity
for Cu(II). The linear range of visible and UV detection towards Cu(II) was 0.05–0.4 μmol/L, the limit of detection were 37.50 nmol/L and 4.48 nmol/L, respectively. In conclusion, the Cu(II) coordination driven Mb-AuNPs assembly makes it able to detect Cu(II) adulteration in
preserved vegetables by dual channel methods to eliminate the occurrence of false positives and improve the accuracy of measurement results. Such non-spatially separated Mb-AuNPs assembly and it catalyzed hydroquinone oxidation dual channel readout was simple, fast, reliable and significantly
facilitated the detection efficiency of Cu(II).
研究领域:
分析化学
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纳米技术
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食品安全
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环境科学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Qixuan Qin,Yizhuo Fan,Wei Wang
In this work, Fe2O3 nanocubes doped with different amounts of transition metals (Cu, Zn) were prepared by hydrothermal synthesis and annealing method. Gas sensing performance tests show that the prepared pristine Fe2O3 exhibits the conductive property of an n-type material, while Cu&Zn doped Fe2O3 exhibit p-type conductive property. The sensors based on 5 at% Cu&Zn doped Fe2O3 showed significantly improved response, selectivity, long-term stability, and moisture resistance to acetone compared to the pristine Fe2O3 nanocubes. X-ray photoelectron spectroscopy (XPS) results confirmed that the adsorbed oxygen of 5 at% Cu&Zn doped Fe2O3 were significantly higher than that of the pristine Fe2O3, which is the main reason for the improved gas sensing performances. Therefore, this study provides an effective way to develop low-cost and high-performance gas sensors based on transition metal-doped metal oxide.
研究领域:
材料科学
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纳米技术
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传感器
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固体物理
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Libing Zheng,Min Tang,Yize Wang,Deyin Hou,Xiaoyu Li,Jun Wang
In this study, a novel Janus membrane was developed by constructing Cu-1,3,5-benzenetricarboxylic acid (Cu-BTC) metal–organic frameworks (MOFs) hydrophilic coating on polyvinylidene fluoride (PVDF) membrane. The Cu-BTC@PVA/PVDF Janus membrane showed a rougher surface with an in-air water contact angle of 27.4˚ and an underwater oil contact angle of 152.8°. The Cu-BTC had minimal impact on mass transfer efficiency in MD process, and the Janus membrane exhibited excellent anti-oil-fouling and anti-NOM-fouling properties. The formation of the hydration layer, the slip boundary effect, and the electrostatic repulsion by the hydrophilic serrated interface were the main antifouling mechanisms. The hydrophobic-hydrophobic interaction was the main fouling mechanism of PVDF membrane for both oil and NOM. Sodium alginate (SA) displayed severe fouling with a compacted fouling layer in PVDF membrane due to the concentration polarization (CP) and gel layer formation. Inorganic fouling was the predominant fouling for the high CP and inorganic–organic coupling. While humic acid (HA) surpassed SA in Cu-BTC@PVA/PVDF Janus membrane for the stronger hydrogen bond, hydrophobic-hydrophobic interaction was significantly alleviated. Inorganic fouling was also significantly alleviated due to the strong electrostatic repulsion effect. The prepared Janus membrane has great potential to promote MD dealing with hypersaline industrial wastewaters containing complex organic matters.
研究领域:
材料科学
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环境工程
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膜技术
·
水处理
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2025
·
IF 5.7
Shaoxiong Feng,Xu Peng,Xu Wei,Yiqing Deng,Xinyun Pu,Xi Gao,Xixun Yu
Reconstructing inflammatory bone defects using stem cell-based therapy faces challenges posed by the oxidative stress microenvironment. Here, inspired by the response mechanism of the intracellular antioxidant defense systems (IADS), we propose MOF nanozymes that mimic the structure of horseshoe crab hemocyanin and find that a ligand engineering strategy can modulate the SOD- and CAT-mimicking activities of MOF-based nanozymes. Through in vitro screening, the most efficient Cu-Imi nanozymes were selected and incorporated into a smart hydrogel (composed of oxidized dextran and dopamine-functionalized gelatin) for inflammatory bone defect treatment. Studies demonstrate that smart hydrogels are able to respond to the acidic microenvironment induced by oxidative stress and early tissue injury by intelligently releasing biomimetic nanozymes, which can effectively eliminate bacteria, alleviate inflammation, and reduce ROS levels. In addition, the smart hydrogel can effectively sustain stem cell viability and osteogenic differentiation in elevated ROS environments, and has the potential to promote angiogenesis and modulate the inflammatory microenvironment during rat bone tissue regeneration. We believe that this smart hydrogel-like material decorated with antioxidant enzymes offers a promising avenue for treat various inflammation-associated disorders, including arthritis, chronic wound and bone fractures.
研究领域:
生物材料
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纳米医学
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组织工程
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生物无机化学
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再生医学
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炎症研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Hongzhong Wang,Kai Chen,Junheng Huang,Chengchao He,Qinlong Zhang,Junwei Li,Zhifang Zhang,Zhenhai Wen
4-Nitrophenol (4-NP), a toxic and recalcitrant pollutant, necessitates effective remediation strategies. Here, a noble metal-free NiCu-NC electrocatalyst is developed, where dual atomic Ni–Cu sites are elegantly anchored on a rhombic dodecahedral nitrogen-doped carbon matrix, enabling selective electrochemical reduction of 4-NP into value-added p-aminophenol (4-AP). This catalyst achieves a low overpotential and a high Faradaic efficiency of 95.7% for 4-AP production. Density functional theory (DFT) calculations reveal that the NiCu dual-atom configuration minimizes the energy barrier for the rate-determining step, thereby enhancing catalytic performance. Furthermore, a hybrid acid/alkali flow electrolysis cell is designed to couple the cathodic 4-NP reduction with the anodic oxygen evolution. This system maintains stable operation for over 400 h while maintaining a high Faradaic efficiency (>91%) and near-complete conversion (99%) for valorization of 4-NP. This work demonstrates a practical electrocatalytic approach for pollutant transformation and chemical production with potential implications for wastewater treatment and resource utilization.
研究领域:
环境化学
·
电化学
·
催化
·
材料科学
·
理论化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Thi Le Cham-Bich,Nguyen Trinh Hao,Thi Le Mai Ngoc,Liem The Ho,Phuong Hoang Tran
The selective oxidation of biomass-derived carbohydrates into high-value platform chemicals represents a promising avenue for sustainable chemical production. In our work, we explored the catalytic performance of a bimetallic Fe/Cu loaded in carbon decorated with nitrogen-sulfur (Fe/Cu@NSC) in the conversion of fructose/glucose into 2,5-diformylfuran (DFF). The catalyst exhibited remarkable efficiency, particularly with fructose, achieving a peak DFF yield of 61.1% under optimized conditions. In contrast, glucose conversion proved less effective, with a maximum DFF yield of 29.1% at 160 °C for 15 h. Methodical examinations of reaction parameters, such as solvent composition, and reaction time, yielded crucial insights into the determinants of product dispersion and catalytic efficacy. Moreover, reusability evaluations demonstrated a slow reduction in catalytic activity throughout repeated cycles; yet, this negligible fall still affirms the promise of catalysts in green chemistry. In addition, the catalyst structure was evidenced by FTIR, XPS, HRTEM, SEM, BET, ICP-MS, NH 3 -TPD, EDX, elemental mapping analyses, and the thermal stability of the catalyst was evaluated by TGA. These findings underscore the potential of Fe/Cu@NSC as an effective and recyclable catalyst for DFF synthesis while highlighting the necessity for further optimization to enhance its long-term stability and performance.
研究领域:
催化化学
·
绿色化学
·
生物质利用
·
可持续化学品生产
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Dejing Meng,Linchun Nie,Wenjing Liu,Rui Yang,Haobo Yang,Junlong Li,Ranhao Zhao,Shaojie Su,Qingxiang Zhou
The inappropriate administration of lincomycin hydrochloride (LIN) will lead to severe side effects. It is critically essential to establish LIN effective detection technique. In this work, a new nanozyme Cu-BDC@Ag 2 O was synthesized by hydrothermal method, which was composed of metal organic framework (Cu-BDC, with copper ion as metal center and 2-aminoterephthalic acid as organic ligand) and Ag 2 O, exhibiting enhanced oxidase-like activity (K m = 0.70 mM, V max = 42.53 × 10 −8 M s −1 ) and laccase-like activity. This enhanced activity was attributed to the interconversion between Cu + /Cu 2+ valence states and the synergistic effect between Ag and Cu elements. The superoxide anion radical ( O 2 – ) produced during the catalytic process of Cu-BDC@Ag 2 O can swiftly oxidize 3,3′,5,5′-tetramethylbenzidine (TMB) to a blue oxidation product (oxTMB). The methylthio group in LIN molecules reacted with Ag + in the nanozyme, forming a stable complex that inhibited the catalytic activity of Cu-BDC@Ag 2 O, causing discernible fading of the blue coloration. Based on this, a smartphone-assisted chromogenic detection system was established for LIN quantification. The linear range extended from 3.42 to 171 μM, with a detection limit of 3.14 μM. Moreover, the colorimetric sensing platform demonstrated promising results in the analysis of real samples with spiked recoveries in the range of 94.1–100.9 % and relative standard deviations lower than 8.0 %, and validated LIN content compliance with commercial ophthalmic solutions against pharmacopeial specifications. The developed colorimetric sensor demonstrated rapid response (4 min) and superior efficiency, offering a portable tool for LIN detection.
研究领域:
分析化学
·
纳米技术
·
生物传感器
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环境监测
·
药物分析
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Nan Xi,Shiting Chen,Ruixi Bao,Qinglian Wang,Yixiong Lin,Jun Yue,Rong Wang,Chen Yang,Wang Yin,Ting Qiu
Furfuryl alcohol (FOL) is commercially available by selective hydrogenation of furfural (FAL). A variety of catalysts have been developed for such purpose, among which Cu-based catalysts show superior catalytic performance. However, copper nanoparticles with complex valence states are easy to agglomerate during hydrogenation reaction, which might have a negative influence on the catalytic performance. The carbon coating is an efficient strategy to prevent the sintering of Cu-based catalysts. Herein, a strategy based on the thermal decomposition of Cu-EDTA complex was designed to prepare carbon encapsulated Cu-based catalysts. The prepared catalysts were applied in the selective hydrogenation of FAL to FOL in the batch reactor. The results showed that a nearly quantitative conversion of FAL with a selectivity of 98.7 % towards FOL was achieved using CuO x @NC-150 (molar ratio of Cu: Na 4 EDTA·4H 2 O=2:1; obtained by oxidative activation at 150 °C) under 140 °C, 3 MPa in 4 h. The performance was comparable to that of the commercial CuCr 2 O 4 catalyst under the identical conditions. In addition, the developed carbon encapsulated Cu-based catalysts exhibited a slightly better stability than CuCr 2 O 4 catalyst in terms of FOL yield in five consecutive cycles. XPS and XAES characterizations implied that the presence of a suitable surface ratio of Cu + /(Cu + +Cu 0 ) of the prepared catalyst may contribute to the selective hydrogenation of FAL to FOL.
研究领域:
催化化学
·
绿色化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）