COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Xin Li,Xinxin Liu,Dongjie He,Xin Wang,Nuo Xu,Ke Li,Aimin Lv,Qun Liu,Yu Zhang
Organic dyes containing azo/anthropquinone groups pose severe ecological risks due to their toxicity and persistence. Therefore, in this study, covalently cross-linked agarose aerogel was used as the substrate, and the Cu-BTC metal-organic framework (Cu-MOF) was loaded via in-situ growth at room temperature to prepare a Cu-MOF @ agarose composite aerogel (Cu-MOF@AGA) adsorbent. The introduction of Cu-MOF endows Cu-MOF@AGA with more adsorption sites and a larger specific surface area (210.78 m²/g). The characteristic peaks at 2θ values of 6.6, 9.4, and 11.5 in the XRD pattern indicate the successful loading of Cu-MOF. Meanwhile, SEM images show that the 3D macroporous structure of Cu-MOF @AGA provides a rapid mass - transfer channel for pollutant molecules. FT-IR results reveal that Cu-MOF@AGA has more functional groups (such as -OH, -COOH) and active sites. The adsorption mechanism was analyzed using XPS and FT-IR, revealing that the adsorbent achieves adsorption of methylene blue (MB) and Congo red (CR) through hydrogen bonding, π-π interactions, and electrostatic interactions. Kinetic and isotherm fitting analyses demonstrated that the maximum adsorption capacities for methylene blue and Congo red reached 59.48 and 159.85 mg/g, respectively. Finally, after five cycles of adsorption experiments, the removal rates for MB and CR remained above 85 %, indicating that the adsorbent exhibits excellent reusability and promising application potential.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Yang Chen,Chengyin Yang,Xiaoqing Wang,Jiangfeng Yang,Jinping Li
Solvent-evaporated conversion (SEC) and steam-assisted conversion (SAC) have been developed to prepare the typical metal-organic frameworks (MOFs) Cu-BTC (HKUST-1) and ZIF-8 using a unique solvent recovery strategy using zeolite. As a green circulation medium, zeolite Na-4A loading and removal of solvent (H 2 O and EtOH) can transport solvent in the vapor phase and avoid solvent condensation, which was the defect in previous SAC syntheses of MOFs, and achieves efficient solvent recovery as well as being an economical and green synthetic process. Moreover, SEC and SAC processes exhibited different mechanisms during the multi-stage reaction and solid diffusion reaction, respectively and both can synthesize the desired products in 12 h. These two methods for MOFs preparation were characterized in detail using XRD, SEM and N 2 adsorption during the different growing stages. According to polar molecules (H 2 O and EtOH) steam-assisted in those synthesis, polar destruction molecules (H 2 O, NH 3 ) adsorption and stability of Cu-BTC and ZIF-8 was investigated.
研究领域:
材料科学
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化学工程
·
环境科学
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DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 9
·1869
·
IF 4.6
Lili Chen,Shuya Xue,Xin Li,Linbo Deng,Jiapeng Li,Jing Zhou,Yansha Gao,Xuemin Duan,Limin Lu
The development of sensitive and selective methods for detecting pesticide residues has become paramount for ensuring food safety. In this work, a high-performance molecularly imprinted electrochemical sensor based on the composite of Cu-BTC- and FeCo-ZIF-derived N-doped carbon (FeCo@NC), synthesized by pyrolysis and electrodeposition, was developed for Benomyl (BN) detection. The materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). In this sensing system, the Cu-BTC/FeCo@NC composite used as the electrode substrate displayed a large specific surface area, high electronic conductivity, and rich active catalytic sites, demonstrating excellent electrocatalytic ability toward BN oxidation. Meanwhile, Cu-BTC, with its abundant surface functional groups, facilitated strong hydrogen bonding interactions with the imprinted template molecule of 3,4-ethylenedioxythiophene (EDOT), promoting the formation of a uniform molecularly imprinted membrane on the substrate material surface. The introduced MIP-PEDOT could enhance the selective recognition and enrichment of the target BN, leading to an amplified detection signal. Thanks to the synergistic effects between Cu-BTC/FeCo@NC and MIP-PEDOT, the proposed sensor achieved a low detection limit of 1.67 nM. Furthermore, the fabricated sensor exhibited high selectivity, reproducibility, and interference resistance in detecting BN. The method has been successfully applied to the determination of BN in vegetable and fruit samples, indicating its potential for use in practical applications.
研究领域:
食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Shuhuai Li,Yinian Zhu,Xionghui Ma,Chaohai Pang,Rui Chen,Zongqiang Zhu
The amplification of detection signals is an important method for improving the sensitivity of electrochemical detection. This study presents an efficient strategy for preparing electrochemical catalytic materials using a simple self-assembly technique to encapsulate Fe single atoms (Fe–SAs) and Ni single atoms (Ni–SAs) in the Cu-benzene-1,3,5-tricarboxylic acid (Cu-BTC) metal–organic framework to form a Cu-BTC@FeNi–SAs catalytic system. Subsequently, Cu-BTC@FeNi–SAs was modified on the surface of a gold electrode, and sulfadiazine was used as a template to prepare a molecularly imprinted polymer (MIP) on the modified electrode. After eluting sulfadiazine, an MIP was obtained for specifically recognising sulfadiazine. When sulfadiazine was adsorbed by the MIP, a differential pulse voltammetry (DPV) signal occurred in response, thus detecting sulfadiazine. The adoption of Cu-BTC-fixed FeNi–SAs significantly facilitated mass transfer during the reaction, thus improving the DPV response signal. When used to detect sulfadiazine, the sensor had a linear range from 5 × 10−12 to 6000 × 10−12 mol L−1 and a detection limit of 1.14 × 10−12 mol L−1. It also successfully detected sulfadiazine residue in seawater and fish samples with recovery rates between 91.02% and 99.20%.
研究领域:
分析化学
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电化学
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纳米技术
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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
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2023
·Vol. 120
·期 10
·e2206619120
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IF 11.1
Wencui Li,Zhi Li,Hang Zhang,Pengxiao Liu,Zean Xie,Weiyu Song,Baijun Liu,Zhen Zhao
Selective oxidation of methane to organic oxygenates over metal–organic frameworks (MOFs) catalysts at low temperature is a challenging topic in the field of C1 chemistry because of the inferior stability of MOFs. Modifying the surface of Cu-BTC via hydrophobic polydimethylsiloxane (PDMS) at 235 °C under vacuum not only can dramatically improve its catalytic cycle stability in a liquid phase but also generate coordinatively unsaturated Cu(I) sites, which significantly enhances the catalytic activity of Cu-BTC catalyst. The results of spectroscopy characterizations and theoretical calculation proved that the coordinatively unsaturated Cu(I) sites made H2O2 dissociative into •OH, which formed Cu(II)-O active species by combining with coordinatively unsaturated Cu(I) sites for activating the C−H bond of methane. The high productivity of C1 oxygenates (CH3OH and CH3OOH) of 10.67 mmol gcat.−1h−1 with super high selectivity of 99.6% to C1 oxygenates was achieved over Cu-BTC-P-235 catalyst, and the catalyst possessed excellent reusability.
研究领域:
催化
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化学工程
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材料科学
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无机化学
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DOI
PubMed
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
·
膜技术
·
水处理
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DOI
高影响因子
FIBERS AND POLYMERS
·
2017
·Vol. 18
·期 7
·1250-1254
·
IF 1.113
Chen Yingbo,Liu Huiqiang,Hu Xiaoyu,Cheng Bowen,Liu Dongqing,Zhang Yufeng,Nair Sankar
Membranes with high water permeation capability as well as high rejection to dye molecules are very important for dye separation. In this study, a metal organic framework structure (Cu-BTC) was fabricated in situ on a poly(vinyl difluoride) hollow fiber support for nanofiltration of dye solution. In order to protect the Cu-BTC layer, the surface was coated by crosslinking polyvinyl alcohol. The composite membranes showed no rejection to divalent salts and high rejection to Congo Red dye. It was noticed that several Cu-BTC layers could enhance dye rejection of the composite membranes. This novel composite membrane showed promising applications in the separation of dye molecules from aqueous solutions containing dissolved salts.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
NANO
·
2020
·
IF 1.566
Bo Tang,Li Ji,Yuanzhe Dai,Haiqun Chen,Zhenyu Zhang,Zhengwei Wang,Sen Li
MOF-based composite material is adopted to modify photoanode, and the obtained large BET area is found meaningful to the dye loading amount, which brings about a high short circuit current and incident photon to current conversion efficiency. Meanwhile, three-dimensional graphene networks (3DGNs) are employed to provide a fast transport channel for photo-induced electrons. The morphology is analyzed by SEM, TEM, XRD and Raman spectrum, and the photovoltaic performances are recorded to reveal the specific functions of MOF and 3DGNs. The synergy between MOF, 3DGNs and TiO 2 is achieved by adjusting their mass fraction. Moreover, the average size of MOF exerts a significant influence on the resulting properties resulting from the scattering ability to incident light. After corresponding optimizing, the short circuit current, open circuit voltaic, fill factor and energy conversion efficiency reach 20.5 mAcm − 2 , 680 mV, 0.619% and 8.63%.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Xiaosen Li,Chun Li,Yifan Fang,Xin Liang,Zhou Fang
Chemical agents present significant threat to international peace, security, and human health due to their potential toxicity. Therefore, developing a sensitive, rapid, and on-site detection method is of great importance. Herein, we developed a highly sensitive and selective glove-based electrochemical sensor based on a metal–organic-framework-modified screen printed electrode (SPE) for chemical agent marker detection. Layered copper benzene-1,3,5-tricarboxylate (Cu-BTC) was successfully constructed to modify screen-printed electrodes (SPE) for detecting electrically inactive ethyl methyl phosphonate (EMPA) and isopropyl methyl phosphonate (IMPA). Additionally, gold nanoparticles (AuNPs) reduced by plasma technology have been applied to create gold nanoparticle-encapsulated copper benzene-1,3,5-tricarboxylate-modified screen-printed electrode (Au@Cu-BTC/SPE) composites for detecting thiodiglycol (TDG). The large surface area and porous structure of Cu-BTC and Au@Cu-BTC enhance the target adsorption and ion diffusion and the efficient use of catalytic materials for rapid electron transfer and zero-distance catalysis. The limit of detection (LOD) was determined to be 4.13 × 10–16 M for EMPA, 7.46 × 10–12 M for IMPA, and 4.05 × 10–12 M for TDG. Following multiple cycles and extended exposure, the sensor demonstrated exceptional repeatability and stability. The response current of Cu-BTC to EMPA and IMPA decreased by 6.75% and 4.86%, and the peak value of Au@Cu-BTC to TDG decreased by 3.3% after 4 weeks, respectively. The peak current showed a good linear relationship with the concentrations of the three target substances, with R2 values all greater than 0.99. The interaction mechanism between the modified electrode and the targets was investigated by density functional theory (DFT) with the generalized gradient approximation of the PBE functional. The results showed that compared with other metal ions, Cu2+ could coordinate tighter with organophosphates. The established MOF-modified SPE integrated with a protective glove sensor was applied for the detection of real-world samples and demonstrated a broad spectrum of practical applications.
研究领域:
分析化学
·
电化学
·
传感器与生物传感器
·
环境监测
·
安全与防御技术
·
纳米材料
·
金属有机框架（MOFs）
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2020
·Vol. 20
·期 3
·1660-1669
·
IF 1.134
Deng Yu-Ying,Xiao Xin-Feng,Wang Dan,Han Bo,Gao Yu,Xue Jian-Liang
Cu-BTC was synthesised by hydrothermal method in this study to adsorb and remove the toxic heavy metal hexavalent chromium Cr(VI) in water. The EDTA-chitosan/Cu-BTC was prepared by the surface modification of Cu-BTC with EDTA-modified chitosan. The initial concentration effects of adsorbed
chromium solution, adsorbent dosage, adsorption time, adsorption temperature and pH of chromium solution on adsorption capacity were estimated using the single-factor optimisation experiment. Results show that the adsorption capacity of the modified composite was higher than that of Cu-BTC.
Cu-BTC and EDTA-chitosan/Cu-BTC exhibited significant adsorption of Cr(VI) under acidic conditions in water and basically independent of temperature. Their adsorption processes conformed with the pseudo-second-order model. The Langmuir adsorption isotherm model obtained the adsorption isotherm,
which indicated that the adsorption process was single molecule adsorption. Isotherm fitting obtained the maximum adsorption amounts of Cr(VI) for Cu-BTC and EDTA-chitosan/Cu-BTC at 27.32 and 46.51 mg·g-1, respectively. Factor and principal component analyses show that the
main factors affecting the adsorption of Cr(VI) in the EDTA-chitosan/Cu-BTC composites are pH, initial concentration and adsorption time. Therefore, EDTA-chitosan-modified Cu-BTC was a more feasible metal-organic framework material than Cu-BTC because of better adsorption performance, which
can be used for adsorption removal of Cr(VI) in water.
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yeshuang Wang,Xuan Liu,Mingxian Duan,Chaonan Zhang,Huiling Fan,Chao Yang,Tingting Jiao,Tian Kou,Ju Shangguan
Isoreticular bimetal M−Cu−BTC has considerable potential in improving the sulfides removal performance of Cu–BTC. Herein, three transition metals, namely, Zn 2+ , Ni 2+ and Co 2+ , were assessed to fabricate M−Cu−BTC, a desirable isoreticular bimetal. Results demonstrated the feasibility of using Zn 2+ to fabricate an isoreticular bimetallic Zn–Cu–BTC. The Zn 2+ doping content of Zn–Cu–BTC was varied to investigate its influence on the hydrogen sulfide (H 2 S) and methyl sulfide (CH 3 SCH 3 ) removal performance of Cu–BTC. The experimental results indicated that the sulfides removal performance of Zn–Cu–BTC increased and then decreased with increasing Zn doping content. The highest H 2 S and CH 3 SCH 3 removal capacities of 84.3 and 93.9 mg S/g, respectively, were obtained when the Zn 2+ doping content was 17%. The hybridisation of Zn and Cu in Zn–Cu–BTC induced a strong interaction between them. This interaction increased the binding energies of H 2 S and CH 3 SCH 3 towards the Cu and Zn adsorption sites while weakening the bond order between Zn and Cu. The weakened bond order made the Zn–Cu bonds easier to form metal sulfides during desulfurization process, thereby synergistically enhancing sulphide removal.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
·
2022
·
IF 1.052
Xin Zhang,Liang Wang,Qiaoyong Zhu
A chlorosulfonylation of vinylarenes using magnetic metal–organic framework (MOF) composite Cu-BTC@Fe3O4 (BTC = 1,3,5-benzenetricarboxylate) as the catalyst has been developed. This protocol features easily accessible starting materials, good functional group compatibility and simple recovery of the catalyst. The recovered catalyst could be reused for at least successive five runs with only a slight decrease in its catalytic activity.
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高影响因子
危险品化学品经营许可证（带存储）