DESALINATION
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2022
·
IF 11.211
Ming Yi,Yafang Liu,Tengyang Zhu,Liang Shen,Chenguang Yao,Yan Wang
Silver (Ag) has been in widespread use in the field of medical/pharmaceutical and chemical industries. The discharge of produced Ag-containing wastewater not only threats the ecosystem but also causes resource exhaustion of non-renewable Ag. For a sustainable environment, a catechol-based membrane-assisted recovery-filtration concept is put forward, exemplified by integrating two processes of I) efficient silver ion (Ag + ) retention and Ag resource recovery by a catechol-rich thin film composite membrane, and II) biofouling mitigation using the resultant antibacterial membrane in salt separation. Due to the strong affinity and reduction capacity of the catechol groups on membrane surface and pores to Ag + , the retained silver ions onto the membrane are spontaneously in-situ reduced into Ag nanoparticles . Consequently, the membrane achieves a remarkable Ag + retention efficiency of 91.1 %. More importantly, the resultant membrane with recovered Ag holds a good separation efficiency towards common salt and excellent anti-microbial property over the ultra-long term, owing to the satisfactory Ag loading and well-regulated release of silver ions from the membrane surface. This membrane-based recovery-filtration pathway gives a new insight towards sustainable Ag resource recovery/reuse and nanofiltration technology for industrial wastewater with minimum facilities.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
Materials
·
2022
·Vol. 15
·期 13
·4625
·
IF 3.748
Liudi Ji,Qi Wang,Lianhui Peng,Xiaoyu Li,Xiaoming Zhu,Peng Hu
It is quite important to develop sensitive, simple, and convenient methods for the simultaneous determination of Hydroquinone (HQ) and Catechol (CC) due to their wide existence, the difficulty of degradation, and the high toxicity. Herein, Cu-TCPP nanosheets were prepared inN,N-dimethylformamide (DMF) through the solvent exfoliation method. The morphology and electrochemical performance of Cu-TCPP were characterized, revealing its stacked sheet structure with abundant pores, a fast electron transfer ability, and a large electrode active area. Using Cu-TCPP nanosheets as the sensitive material to modify the glassy carbon electrodes (Cu-TCPP/GCEs), it was found that they had an obvious enhancement effect on the electrochemical oxidation currents of HQ and CC. The signal enhancement mechanism was explored. The Cu-TCPP nanosheets not only enhanced the accumulation abilities of HQ and CC, but also improved their apparent catalytic rate, displaying high sensitivity for HQ and CC. The values of the detection limit were calculated to be 3.4 and 2.3 nM for HQ and CC. A satisfactory recovery was obtained when this method was used in measuring HQ and CC in the water samples.Keywords:hydroquinone;catechol;electrochemical sensor;Cu-TCPP;2D MOFs
研究领域:
环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Keru Cao,Fangyu He,Jun Yan,Weiwei Zhu,Yanan Wang,Yuheng Zhang,Biao Zhang,Xiaohua Yu,Qingfeng Shen,Chunxia Liu,Qi Wang
Electrochemical detection techniques are not sensitive in detecting isomers with similar structures and properties due to the disadvantages of some sensors such as instability, poor selectivity and susceptibility to environmental interference. Therefore, calcined metal–organic framework structure (Bi-MOF) was used to prepare its derivative Bi@C nanocomposites, and materials with multiple surface active sites and large specific surface area were developed to improve the current response signal of the detected substance. The morphology and structure of the prepared Bi@C were tested by XRD, SEM and other characterisation means. The electrochemical response of Bi@C nanocomposites was studied using an electrochemical workstation for hydroquinone (HQ) and catechol (CC) electrochemical detection. An electrochemical method was developed for the simultaneous determination of hydroquinone and catechol in a simple and highly selective manner. Differential pulse voltammetry (DPV) was used for simultaneous detection of HQ and CC. The results show that Bi@C electrode can detect isomers with high selectivity. Bi@C was detected in the range of 2–600 μM and 2–800 μM for HQ and CC, respectively, in pH = 7 solution. The detection limits were 0.14 μM and 0.12 μM(S/N = 3), respectively. The sensor is successfully applied to detect HQ and CC of real samples and has low detection limit, good recovery, high selectivity, stability and reproducibility. It provides a new idea for electrochemical detection.
研究领域:
材料科学
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分析化学
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DOI
高影响因子
OPTICAL MATERIALS
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2023
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IF 3.9
Feifei Chen,Suju Jiang,Qiaozhi Zhou,Siqi Chen,Zihua Wu,Yuyang Guo,Anhua Wei,Jingmei Yuan,Guobao Huang
Facile preparation of small gold nanorod with controllable and large surface plasmon resonance band is of great value for applications in especially the biomedical and sensing fields. In this work, we propose that without addition of additive to complicate the experimental system catechol of a very weak reducibility can be used as reducing agent for seed-mediated synthesis of gold nanorod. Under a temperature of 40 °C and a catechol concentration of 17.5 mM, monodisperse gold nanorod with a high shape yield, a largest plasmon wavelength of 918 nm, and especially a small diameter of 9.8 nm can be acquired simultaneously. A good tune over the plasmon wavelength is also shown by varying the amount of silver ion . Besides, the effects of experimental parameters including silver ion, cetyltrimethylammonium bromide, gold seed and catechol have also been carefully studied, and the morphological and structural evolutions of the particle have been discussed based on reported growth mechanism.
研究领域:
材料科学
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生物医学
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纳米技术
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DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
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2023
·Vol. 38
·期 21
·4784-4794
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IF 2.7
Wang Haoran,Cao Tongtong,Zhou Yicheng,Zhang Jiazheng,Zhang Yuhan,Dong Li,Liu Lin,Zhu Jing,Liu Chao,Tong Zhiwei
A novel electrochemical sensor based on titanium carbide (Ti 3 C 2 ) and cobalt porphyrin (CoTMPyP) nanocomposite was developed to detect catechol (CC). X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) methods were used to characterize the CoTMPyP/Ti 3 C 2 nanocomposite and illuminate the electrochemical oxidation process, as well as electrochemical techniques such as electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and differential pulse voltammetry (DPV) were measured. The results indicate that the introduction of CoTMPyP greatly enhanced the electron transfer capability and maintained high stability, good reproducibility, and interference resistance. Moreover, it has a lower detection limit (2.5 μM) in the range of 5–268 μM and has greater application potential in the detection of CC. Hence, Ti 3 C 2 nanocomposites are considered as a candidate material for combination with carbon materials and have potential applications in environmental analysis and catechol detection. Graphical abstract
研究领域:
材料科学
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环境分析
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2023
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IF 3
Yifang Zhao,Yuanyuan Liu,Mengqing Cheng,Zixian Li,Xinyu Meng,Ailing Sun,Liuhe Wei,Xingjiang Liu,Yuhan Li
Conventional adhesives often emit volatile organic compounds (VOCs), which have a negative impact on human health. In this paper, an environmentally-friendly supramolecular adhesive PD which has high adhesive and low VOCs emission is prepared by the reaction between polyethyleneimine (PEI) and 3,4-dihydroxybenzaldehyde (DBA). PD containing abundant catechol groups exhibit excellent adhesion to wood substrates and is able to reach a maximum shear strength of 5.20 ± 0.39 MPa. One factor is attributed to multiple reactions between PEI, and DBA and oxidation of DBA. These reactions construct a complex three-dimensional cross-linked structure which is very helpful to improve the bonding performance of the adhesive. Another reason refers to the fact that a large number of catechol groups in PD can form a lot of hydrogen bonds with the amino group in PEI and the hydroxyl group in the wood substrate. These hydrogen bonds play an important role in enhancing shear strength. PD adhesives have a stronger bond strength than commercial chloroprene rubber (CR, Pattex-PXL) and polyvinyl acetate adhesives (PVAc, JUJU-8708) and have lower emissions of VOCs. As an environmentally-friendly adhesive for wood-based substrates, this adhesive may have potential applications in the wood processing industry.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
DRUG METABOLISM AND DISPOSITION
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2011
·Vol. 39
·期 4
·667-674
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IF 3.716
Zhongjian Chen,Meng Chen,Hao Pan,Siyuan Sun,Liping Li,Su Zeng,Huidi Jiang
Luteolin is mainly metabolized by phase II enzymes in animals and humans with glucuronidation and sulfation as the two known metabolic pathways. Although methylation of luteolin was reported previously, the structure of the methylated metabolites and the enzymes involved in the process have not been clarified. In our study, two methylated metabolites, M1 (chrysoeriol) and M2 (diosmetin), were identified in the urine after intravenous administration of luteolin to rats, and the data suggested that the methylation was mediated by catechol- O -methyltransferase (COMT). When luteolin was coadministered with a specific COMT inhibitor , entacapone , the formation of M1 and M2 was significantly reduced, whereas the plasma concentration of luteolin increased. Methylation of luteolin was also studied in vitro using rat tissue homogenates. The apparent kinetic parameters associated with the formation of M1 and M2 in vitro were estimated, and regioselectivity of methylation of luteolin was observed. In the in vitro experiment, there was a preference for the formation of M2 over M1. In contrast, accumulation of M1 was preferred in vivo in both rat plasma and urine after an intravenous dose of luteolin. In conclusion, COMT played a crucial role in the disposition of luteolin in rats. Our results indicated that the methylation pathway in rats was significantly reduced when luteolin was coadministered with a specific COMT inhibitor. Therefore, COMT-associated drug-drug interactions need be considered in the future in luteolin clinical trials because the plasma concentrations and related therapeutic effects may be altered in vivo in the presence of a COMT inhibitor.
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Xiaohui Ju,Hong Gao,Chen Wang,Runtian Li,Wenqi Zhang,Hongjun Ji,Xiao Xiao,Weixing Li,Yujia Tong
A novel nanofiltration (NF) membrane is developed for efficiently separating monosaccharide from disaccharide. A hydrophilic catechol (CT)-Ag interlayer is proposed and co-deposited on a polyacrylonitrile (PAN) substrate, and then interfacial polymerization (IP) of polyethyleneimine (PEI) and trimethyl chloride (TMC) is carried out. The silver nanoparticles obtained through the reduction reaction are used to precisely regulate the unique selective structure with quinone aggregates and polyamides. The composite NF membrane achieved a pure water flux of 31.2 L m −2 h −1 at 0.5 MPa with 81.2 % sucrose rejection and 17.5 % glucose rejection. Performance evaluation in dyes, proteins, and bacteria systems also showcased the great performance of the membrane. Following the filtration of methyl orange and BSA, the flux recovery rates of the PAN/CT-Ag interlayer/PEI + TMC membrane reached 98.7 % and 98.1 %, respectively. The designed structure of silver nanoparticles in membrane enhances the anti-fouling properties through interactions with bacterial proteins. The developed membrane shows promising potential for glucose purification.
研究领域:
生物工程
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材料科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2018
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IF 3.306
Yanxiong Ren,Dongdong Peng,Hong Wu,Leixin Yang,Xingyu Wu,Yingzhen Wu,Shaofei Wang,Zhongyi Jiang
In this study, a kind of functionalized graphene oxide (GO) membranes was fabricated. GO nanosheets were pre-coated by polydopamine (PDA) via spontaneous polymerization of dopamine (DA) and then cross-linked with zinc ions (Zn 2+ ) via dopamine-mediated complexation reaction. The PDA coating rendered GO nanosheets a large number of evenly distributed oxygen-containing functional groups, which are beneficial to bond zinc ions effectively and to create favorable microenvironments of the nanochannels in GO membranes. Both PDA and Zn 2+ acted as cross-linkers to tune the interlayer spacing of GO nanosheets. Zinc ions also afforded facilitated transport ability towards CO 2 in dry state. Taking CO 2 /CH 4 separation as the model system, the GO-PDA-Zn 2+ membrane exhibited significantly enhanced CO 2 permeance of 175 GPU with CO 2 /CH 4 selectivity of 19.1 in dry state owing to the large transport channels and facilitated transport carriers. Moreover, the GO-PDA-Zn 2+ membrane exhibited high CO 2 /CH 4 selectivity of 32.9 in wet state owing to the stable intergalleries and moderate interlayer spacing. It is envisioned that the synergistic manipulation of PDA and metal ions can be utilized to exploit a variety of 2D membranes with superior gas separation performance.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Yunyan Ren,Xinyan Cheng,Yihong Chen,Huiping Wang,Wenjuan Dong,Shengmei Song,Shaomin Shuang,Chuan Dong,Xiaojuan Gong
Benzenediol isomers, including catechol (CT), resorcinol (RS), and hydroquinone (HQ), are widespread environmental pollutants with nearly identical molecular structures and physicochemical properties, posing significant challenges for their selective detection in aqueous systems. Among them, CT is of particular concern due to its high toxicity to aquatic organisms and potential risks to human health. Conventional detection methods often exhibit insufficient selectivity and sensitivity in complex matrices. Herein, we report a dual-emission ratiometric fluorescent sensor integrating molecularly imprinted polymers (MIPs) with blue and yellow carbon dots (B-CDs@MIPs/Y-CDs) for the selective recognition and quantification of CT in aqueous media. The sensor operates via a ratiometric fluorescence mechanism, in which CT selectively quenches the blue emission of B-CDs while the yellow emission of Y-CDs remains constant, serving as an internal reference. The molecularly imprinted layer introduces highly specific binding sites at the nanoscale interface, conferring outstanding selectivity toward CT over its structural isomers RS and HQ. The sensor exhibited an imprinting factor of 2.73, a wide linear detection range (5.0–500 μg/mL), a low detection limit (0.15 μg/mL), and excellent anti-interference capability. Furthermore, successful application to real water samples with recoveries of 90.3–110.5 % verified its analytical reliability and practical feasibility in complex matrices. This work demonstrates a versatile strategy for isomer-level molecular recognition through interface-engineered dual-color carbon dots combined with molecular imprinting technology. The proposed sensor effectively addresses the challenge of selectively detecting structurally similar pollutants and provides a promising platform for sensitive, selective, and practical fluorescence-based environmental monitoring.
研究领域:
环境科学
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分析化学
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纳米材料
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荧光传感器
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分子印迹技术
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 44
·20974-20986
·
IF 4.682
Hu Yong,Xu Yuan,Wang Bing,Chen Yun,Huang Chao
The methacrylated catechol-chitosan (MCCS) was facile prepared using chitosan (CS) sequential crosslinked with 2,3,4-trihydroxybenzaldehyde (THB) and methacrylic anhydride (MA) in mild conditions and then was induced into adhesive hydrogel by photopolymerization with photoinitiator. Structure and morphology of the MCCS adhesive hydrogel were characterized by FTIR, UV, XRD, 1 H NMR, and SEM. Physical properties of the MCCS adhesive hydrogel including swelling, degradation, rheology, and adhesive strength were also investigated. These results show that the MCCS adhesive hydrogel with ideal elasticity and good mechanical properties can be quickly obtained by UV (365 nm) irradiation, endowing the photocrosslinked hydrogel exhibits controllable degradation rate and improved adhesive strength. The ultimate adhesion strength of MCCS hydrogel is up to 62.33 kPa, which is more than twice that of hydrogel prepared by CCS. Additionally, the MCCS hydrogel has good cell compatibility and antibacterial activity. The MCCS hydrogel may be a promising candidate material for the development of medical bioadhesives.
研究领域:
生物材料学
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医学工程
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DOI
高影响因子
FUEL
·
2026
·
IF 7.8
Jian Wang,Yu Zhao,Tianhua Yang,Xinyong Diao,Yao Tong,Shuang Cui,Bingshuo Li,Rundong Li
Guaiacol, an important lignin-derived compound, presents a central challenge in the efficient upgrading of biomass into sustainable biofuels. Conventional conversion processes are often limited by dependence on corrosive acids, noble metals, or external hydrogen sources, leading to increased costs and safety concerns. In this study, we developed a hydrothermal conversion method that enables guaiacol to catechol transformation without the need for external hydrogen or inorganic acids. This was accomplished using transition-metal-based n Ni– y MoO x /Nb 2 O 5 catalysts capable of cleaving C–O bonds. The results showed that the Ni/MoO x ratio was critical in governing the formation of the NiMoO 4 spinel phase while inducing a strong metal–support interaction (SMSI) that directly affected the surface acidity and oxygen vacancy concentration. Using the 5Ni-5MoO x /Nb 2 O 5 catalyst (Ni/Mo = 1:1) at 300 °C for 2 h, 26.15% guaiacol conversion was achieved, with catechol selectivity 12.9-fold higher than in the noncatalytic system. This superior performance originated from a synergistic effect between the moderate acid strength and the high concentration of defective oxygen vacancies, which collectively drove the selective cleavage of the O–CH 3 bond. The produced catechol serves as a pivotal platform intermediate for synthesizing renewable fuel additives and advanced biofuel components. This study presents a sustainable catalyst design strategy for converting lignin resources into valuable biofuel precursors.
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DOI
高影响因子
危险品化学品经营许可证（带存储）