Journal of Environmental Chemical Engineering
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2021
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IF 5.909
Mengyang Xu,Xiaoxue Zhao,Haopeng Jiang,Songtao Chen,Pengwei Huo
Converting carbon dioxide into valuable chemicals is seen as a promising strategy for slowing global warming while enriching energy supplies. Photocatalysts derived from Metal-Organic Frameworks (MOFs) can not only overcome the problem of poor stability of MOFs, but also inherit the advantages of MOFs to some extent. Herein, carbon doped In 2 O 3 (C-In 2 O 3 ) hollow tubular is synthesized by calcination of MIL-68(In) as sacrificial template. Then C-In 2 O 3 and g-C 3 N 4 are hydrothermal to obtain C-In 2 O 3 /g-C 3 N 4 heterojunction . The unique hollow tubular structure, carbon doping and type-II heterojunction of C-In 2 O 3 /g-C 3 N 4 expand the light absorption capacity and promote the separation of photogenerated electron-hole pairs, thus significantly improve the activity of photocatalytic reduction of CO 2 . Among them, C-In 2 O 3 /g-C 3 N 4 -5 shows the highest CO 2 reduction activity towards CO (153.42 μmol/g/h) and CH 4 (110.31 μmol/g/h).
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CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Longyun Zhang,Ganghua Zhou,Gaoran Chen,Heming Wang,Qian Zhao,Weiqin Yin,Jianjian Yi,Xingwang Zhu,Xiaozhi Wang,Xin Ning
The metal–organic frameworks (MOFs) rich in porous structures and their derivatives have been widely developed and applied to heavy metal adsorption. However, little attention has been paid to the subsequent treatment and reutilization of spent MOFs adsorbents. A potential feasible strategy is to develop MOFs-derived bimetallic catalysts for energy conversion. Herein, a bimetallic Ni-Cu 2 O-Cu/C nanocomposite (Ni-Cu/C) derived from spent Cu-based MOFs (CuBTC) adsorbents was fabricated and applied to improve the performance of photocatalytic CO 2 reduction. The results demonstrate that Ni doping could improve the charge transfer dynamics. The synthesized Ni-Cu/C catalyst exhibits a high CO yield (12.45 μmol g −1 h −1 ) in the pure water system in the absence of other photosensitizers and sacrificial agents, which is 2.05 folds higher compared to Cu/C. The CO 2 conversion selectivity of the synthesized Ni-Cu/C catalyst reaches up to 99.0%. The mechanism of photocatalytic CO 2 reduction reaction was further investigated by in-situ experiments and density functional theory calculation. The in-situ FT-IR characterization show that photogenerated electrons could effectively adsorb CO 2 to produce CO 2 − and optimize *CO immediate. This work not only emphasizes the unique design of bimetallic catalyst derived from spent MOFs adsorbent, but also contributes a feasible solution to its reutilization for enhanced CO 2 conversion.
研究领域:
材料科学
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环境科学
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催化化学
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SENSORS AND ACTUATORS B-CHEMICAL
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2015
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IF 4.097
Dongfang Wang,Yingchang Ke,Di Guo,Hongxu Guo,Jianhua Chen,Wen Weng
A metal-organic frameworks (MOFs), cauliflower-like MIL-100(Cr), has been facilely prepared through simple reflux method for the first time and characterized by XRD, FT-IR, SEM and XPS. The MOFs was found to be useful for the simultaneous and selective electrochemical detection of microgram Cd(II), Pb(II), Cu(II), and Hg(II) in aqueous solution. The detection was performed by the square wave anodic stripping voltammetry (SWASV). The MIL-100(Cr) modified electrode showed an excellent selectivity and stability for Cd 2+ , Pb 2+ , Cu 2+ , Hg 2+ determinations. The electrochemical properties and applications of the modified electrode were studied. Operational parameters such as pH, deposition potential and deposition time were optimized for the purpose of determination of traces of metal ions .
研究领域:
材料科学
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分析化学
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2021
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IF 3.498
Jie Ding,Xiaoxuan Yuan,Jinfeng Wang,Wenfeng Mao,Jianzhong Huo,Jingbo Zhang
Metal-Organic Frameworks (MOFs) have attracted much attention due to its large specific surface, flexible porosity and unsaturated coordination bonds. Cathodic deposition is a unique in-situ potential-driven synthesis method for the deposition of thin film MOFs; however, the gradually consumption of reactants during cathodic deposition might lead to unstable and uncontrollable reaction during thin-film MOF deposition. Herein, oxygen is selected as the initial reactant for the formation of OH − , which can result in gradually and successive formation of thin-film MAF-66 (Metal azolate framework-66), and the particle size and film thickness of the MAF-66 film can be easily tuned by the deposition time. Furthermore, the cathodic deposited thin-film MAF-66 show good adsorption property for heavy metal ions , with Cd 2+ as a representative species. The adsorption capacity can reach 32.3 mg/g (removal ratio: 69%) and the deposited MAF-66 film can achieve a satisfactory recovery degree with structural and morphological stability. In this way, a novel, environmental-friendly, and controllable cathode deposition method is developed for preparation of thin-film MAF-66, which also show great promise as a candidate for heavy metal ions adsorbent.
研究领域:
材料科学
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环境科学
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化学工程
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高影响因子
Small
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2015
·Vol. 11
·期 31
·3807-3813
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IF 8.368
Li-Li Tan,Haiwei Li,Yue Zhou,Yuanyuan Zhang,Xiao Feng,Bo Wang,Ying-Wei Yang
A new theranostic nanoplatform, comprising of monodisperse zirconium metal-organic frameworks (MOFs) as drug carriers and carboxylatopillar[5]arene-based supramolecular switches as gating entities, is constructed, and controlled drug release triggered by bio-friendly Zn 2+ ions (abundant in synaptic vesicles) and auxiliary thermal stimulus is realized. This on-command drug delivery system exhibits large pore sizes for drug encapsulation, excellent biodegradability and biocompatibility, extremely low cytotoxicity and premature drug release, and superior dual-stimuli responsiveness, opening a new avenue in targeted drug delivery and controlled release of therapeutic agents, especially in the treatment of central nervous system diseases.
研究领域:
材料科学
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生物医学工程
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药学
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DOI
PubMed
高影响因子
Nature Communications
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2024
·Vol. 15
·期 1
·1-15
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IF 14.7
Tian Xiaoli,Li Fu,Tang Zhenyuan,Wang Song,Weng Kangkang,Liu Dan,Lu Shaoyong,Liu Wangyu,Fu Zhong,Li Wenjun,Qiu Hengwei,Tu Min,Zhang Hao,Li Jinghong
Metal-organic frameworks (MOFs) with diverse chemistry, structures, and properties have emerged as appealing materials for miniaturized solid-state devices. The incorporation of MOF films in these devices, such as the integrated microelectronics and nanophotonics, requires robust patterning methods. However, existing MOF patterning methods suffer from some combinations of limited material adaptability, compromised patterning resolution and scalability, and degraded properties. Here we report a universal, crosslinking-induced patterning approach for various MOFs, termed as CLIP-MOF. Via resist-free, direct photo- and electron-beam (e-beam) lithography, the ligand crosslinking chemistry leads to drastically reduced solubility of colloidal MOFs, permitting selective removal of unexposed MOF films with developer solvents. This enables scalable, micro-/nanoscale (≈70 nm resolution), and multimaterial patterning of MOFs on large-area, rigid or flexible substrates. Patterned MOF films preserve their crystallinity, porosity, and other properties tailored for targeted applications, such as diffractive gas sensors and electrochromic pixels. The combined features of CLIP-MOF create more possibilities in the system-level integration of MOFs in various electronic, photonic, and biomedical devices.
研究领域:
材料科学
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纳米技术
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微电子
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光子学
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
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IF 3.99
Mingbo Shi,Renliang Huang,Wei Qi,Rongxin Su,Zhimin He
A universal strategy is developed to construct a superhydrophobic and superoleophilic metal-organic framework (MOF) by an amidation reaction between amino group and acid chloride of octadecanoyl chloride. The introduction of long alkyl chain reduced the surface free energy, yielding a superhydrophobic Zr-MOF (UiO-66-NH-C18) with a high water contact angle (WCA) of 151.7°. The adsorbed amount of water on the UiO-66-NH-C18 was only 5.59 mmol/g, which was just 28 % of that on the UiO-66-NH 2 . More importantly, the hydrophobic modification improved the stability of Zr-MOFs under strong alkaline conditions (e.g., pH = 13). Furthermore, the UiO-66-NH-C18 can selectively absorb organic solvent from water and achieve continuous oil-water separation. The oil-water separation efficiency could reach up to 99.9 %. In addition, the UiO-66-NH-C18@sponge was also prepared through dip-coating of UiO-66-NH-C18 on the melamine sponge in the presence of PDMS solution. The resulting composite shows high adsorption capacities for various oils and organic solvents ranging from 32.3–66.1 g/g. The superhydrophobic UiO-66-NH-C18@sponge has potential as a promising absorbent for treatment of oily wastewater.
研究领域:
材料科学
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环境科学
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化学工程
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Cheng Liu,Chuan Tan,Yangzhou Fan,Yipeng Yan,Chuan Shan,Jingsong Xu,Guangyuan Chen,Renren Wang,Kai Du,Xin Chen,Tao Duan
The efficient purification of radioactive iodine aerosols is essential in developing nuclear energy. Using existing materials and processing processes, it is hard to efficiently purify iodine aerosols and iodine gas simultaneously. Membranes with excellent adsorption and filtration properties are suitable candidates for efficient purification. A simple one-step synthetic strategy developed from the electrospinning method fabricates a multifunctional composite nanofibrous membrane material (ZIF-8@PVP/PAN). The ZIF-8 crystals coated the fiber surface, and some were embedded into the PVP/PAN fiber without significantly changing the fiber diameter distribution. The ZIF-8@PVP/PAN membrane shows outstanding adsorption properties with a maximum adsorption capacity of 2898 mg/g for iodine gas and 456 mg/g for methyl iodide. In addition, at a face velocity of 5 cm/s, it exhibits excellent filtration efficiency of 99.91 % for PM 0.3 with a much lower pressure drop of 79 Pa. Combine the DFT theoretical calculations and characterization results, it can be considered that active adsorption sites provided by the PVP/PAN fiber framework and the loaded ZIF-8 enhanced the iodine adsorption together. The efficient filtration results from the synergistic effect of interception, adsorption, and electrostatic attraction. The ZIF-8@PVP/PAN composite membrane with excellent multifunctional performance and outstanding thermal and radiation stability provides a potential material for efficiently purifying iodine aerosols and iodine gas in reprocessing plants under practical working conditions.
研究领域:
材料科学
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环境科学
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Dan Wang,Hanlin Wang,Juanjuan Fan,Hancheng Zhu,Akira Fujishima,Xintong Zhang
Photoelectrochemical (PEC) performance of photoanode is limited by the cascade-dynamic processes, mainly including light absorption , charge separation, and surface reaction. This work adopted a strategy of nanocones modification on FTO substrate (FTO-NC) to enhance light utilization and photoelectrons collection for improved PEC water splitting . Comparative studies showed that FTO-NC enhanced the light scattering, promoting the conversion process of photon to electron/hole and enlarging the effective surface area of BiVO 4 for surface reaction. Meanwhile, cooperative Mo-doping and Co-MOF decoration improved the bulk electron transportation in BiVO 4 , hole migration towards the electrode surface , and accelerated the water oxidation reaction of photogenerated holes. The photocurrent density of FTO-NC/BiVO 4 -Mo/MOFs reached 3.56 mA cm −2 , 6.14 times that of pristine BiVO 4 . The IPCE of FTO-NC/BiVO 4 -Mo/MOFs photoanode achieve 60% at 1.23 V vs. RHE, demonstrating a significantly enhanced light utilization performance. This work presents new insight into boosting cascade-dynamic processes through collaborative strategies for highly efficient PEC water-splitting.
研究领域:
材料科学
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能源科学
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
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IF 4.6
Menglong Chen,Fen Xu,Lixian Sun,Chenchen Zhang,Jiaxi Liu,Xuehu Wu,Maozhan Du,Xuan Peng,Zhongxian Zhao,Yanming Su
To meet the demand for high-efficiency energy storage of supercapacitors, it is important to develop binder-free electrodes. As an electrode material, transition metal sulfides are one of the research hotspots in this field. Herein, the Ni 3 S 2 @CoS x /NF electrode has been fabricated in situ on nickel foam via a combination of electrodeposition and hydrothermal methods. SEM analysis reveals that the Ni 3 S 2 nanosheets are dispersed on the surface of CoS x with a hollow dodecahedron structure. Moreover, there is a heterogeneous interface between Ni 3 S 2 and CoS x . The electrochemical measurements with Ni 3 S 2 @CoS x /NF directly serving as the positive electrode demonstrate that the Ni 3 S 2 @CoS x /NF presents a good electrochemical energy storage performance. That is, the Ni 3 S 2 @CoS x /NF electrode exhibits a high areal capacitance of 8100 mF·cm −2 at 1 mA·cm −2 and retains 74% of its initial capacitance after 5000 cycles at 20 mA·cm −2 . An asymmetric supercapacitor using Ni 3 S 2 @CoS x /NF as the positive electrode and activated carbon (AC) as the negative electrode achieves an areal energy density of 270 μWh·cm −2 at a power density of 800 μW·cm −2 . Meanwhile, the mechanism for the improvement of the electrochemical performance of Ni 3 S 2 @CoS x /NF is further analyzed.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Fei Ni,Shuxin Shen,Tianle Cao,Guangli Yu,Zhiqi Zhu,Kangjun Wang
Arsenite (As(III)) threatens to environmental sustainability and human health due to its high mobility and toxic nature. Metal-organic frameworks (MOFs) have gained attention as effective adsorbents for removing As from wastewater systems. Nevertheless, their practical implementation is frequently hindered by several challenges, including inadequate functional stability and insufficient availability of binding sites. In this study, four innovative functionalized adsorbents were developed by covalently grafting ethylenediamine (ED), diethylenetriamine (DETA), tris(2-aminoethyl)amine (TAEA), and polyethyleneimine (PEI) onto the hierarchically structured UiO-66-NH 2 (referred to as HP-UiO-66-NH 2 ) through a bromoacetyl bromide-assisted reaction. The creation of hierarchical pores in the MOFs not only enabled the accommodation of amine groups but also enhanced the mass transfer of As(III). Notably, the DETA/HP-UiO-66-NH 2 material exhibited an exceptional adsorption capacity for As(III), reaching up to 406.5 mg g −1 , which exceeds the performance of the majority of adsorbents reported thus far. In practical applications, a mere 1 mg of DETA/HP-UiO-66-NH 2 is sufficient to effectively remove trace amounts of As(III), meeting the World Health Organization’s recommended limit for drinking water (< 10 µg L −1 ). Fixed-bed column experiments revealed that this adsorbent could treat approximately 1530 bed volumes of arsenic-laden groundwater, achieving a five-fold improvement over commercially available activated carbon. Additionally, the material possessed considerable anti-interference capacity (85 %-96 % effectiveness relative to the blank control) and high regenerability, retaining 91 % of its adsorption capacity after five cycles. Investigations utilizing SEM, N 2 adsorption, XPS, FT-IR, and DFT calculations substantiated that both physical and chemical adsorption were the principal mechanisms driving the adsorption of As(III). This research provides a versatile methodology for the development of ultrahigh-performance MOF adsorbents aimed at addressing arsenic contamination.
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ELECTROPHORESIS
·
2016
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IF 2.482
Pingxiu Tang,Tao Bao,Zilin Chen
Metal-organic frameworks (MOFs) are attractive stationary phases in the field of separation sciences for their unique properties such as large specific surface areas, high porosity, and diverse structures. However, there are few MOFs, which have ultrahigh porosities and gas uptake capacities. In this work, MOF-180 with exceptional porosity, a cage size of 15 × 23 Å, was grown on inner wall of capillary as a novel stationary phase for open-tubular CEC. It has been demonstrated that the MOF-180-modified capillary column exhibited good performance for separation of acidic, basic, and neutral analytes. As compared with MOF-199-modified column, MOF-180-modified column exhibited specific recognition and size selectivity to the tested compounds. The characteristics observed by SEM and FTIR indicated that MOF-180 was successfully grafted on the inner wall of the capillary. The precisions (RSDs) of retention time, peak area, and W 1/2 for methylbenzene, ethylbenzene, n-propylbenzene, chlorobenzene, o-dichlorobenzene, and 1,2,4-trichlorobenzene were 0.50–0.54%, 3.31–4.13%, 0.35–1.61%, 1.73–4.22%, 2.67–4.37%, and 1.60–3.38%, respectively. Besides, the run-to-run, day-to-day, and column-to-column RSDs of EOF were 0.6%, 4.19%, and 4.31%, respectively.
研究领域:
分析化学
·
材料科学
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高影响因子
危险品化学品经营许可证（带存储）