JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2020
·Vol. 326
·期 1
·185-192
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IF 1.137
Hu Ke,Liu Zhirong,Xiu Taoyuan,Zhou Limin,Wang Yun
The Cu 3 (BTC) 2 (BTC = 1,3,5-benzenetricarboxylic acid) was synthesized by water/solvent heat method. The Cu 3 (BTC) 2 was characterized by SEM/EDS, Zeta potential and XRD. Batch static adsorption experiments investigated the various factors affecting the adsorption of Th(IV) in aqueous solution such as pH, solid–liquid ratio, contact time, initial concentration and temperature, and the adsorption mechanism is also discussed. The adsorption process was in line with the pseudo-second-order kinetic model and the Langmuir isotherm model. At the same time, compared with other adsorbents. The results showed that Cu 3 (BTC) 2 had good adsorption for Th(IV) with a maximum adsorption of 757.58 mg g −1 .
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
RSC Advances
·
2016
·Vol. 6
·期 99
·96997-97003
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IF 3.289
Xiang Ma,Haidi Liu,Weiman Li,Shengpan Peng,Yunfa Chen
A copper-based metal organic framework (MOF-199) with controllable size and shape was synthesized and used to remove gaseous methyl mercaptan (CH3SH). Characterizations of the synthesized MOF-199 samples before and after desulfurization were carried out by X-ray diffraction (XRD), Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS) to observe the adsorption mechanism of CH3SH on MOF-199. The adsorption performance of the synthesized MOF-199 materials and commercialized activated carbon (AC) and Cu loaded AC were evaluated by breakthrough experiments. All three synthesized MOF-199 materials show better performance than commercialized AC. The morphology and texture of MOF-199 materials have great influence on the performance of the adsorption process. The MOF-199 material synthesized by a hydrothermal method exhibited the highest sulfur compound capacity among the synthesized MOF-199 materials (74.7 mg of CH3SH/1 g MOF-199). The color change of MOF-199 during the CH3SH capturing process, indicated a strong interaction between the unsaturated copper sites and –SH group which finally formed CuS and gave rise to obvious damage to the MOF structure.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.7
Zhiwei Zhao,Yating Wang,Yuhao Tang,Xiaoqing Wang,Feifei Zhang,Jiangfeng Yang
Unconventional natural gas has become an important supplement to conventional energy sources, and the process of enrichment and purification of methane from low concentration coalbed methane is crucial. To this end, we report a copper-based metal–organic framework (MOF), ZJNU-119Cu, featuring two methane traps constructed with uncoordinated carboxylic acid oxygens and open metal sites. ZJNU-119Cu exhibits a high methane adsorption capacity (58.2 cm 3 ·g –1 ) at 298 K and 0.1 MPa and excellent CH 4 /N 2 separation performance under dynamic conditions. Density-functional theory calculations combined with grand canonical Monte Carlo simulation theory reveal the interaction mechanism for the uncoordinated carboxylic acid oxygen atoms and open metal sites in ZJNU-119Cu with CH 4 . The gas adsorption isotherms, heat of adsorption calculations, and breakthrough separation experiments indicate that this MOF is a very promising adsorbent for CH 4 /N 2 separation.
研究领域:
材料科学
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能源化学
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理论计算
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DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2021
·
IF 5.268
Yuhang Yuan,Wenting Cai,Jiaxin Xu,Jianhua Cheng,Ke-Si Du
Copper-based MOF (Cu-PABA) was selected to immobilize laccase (Lac) at optimum pH because of its favorable acid resistance. Cu-PABA@Lac biocomposites were synthesized in situ by the one-step method under moderate conditions (water environment and normal temperature and pressure). Cu-PABA@Lac had great potential to maintain stability due to the protection of the Cu-PABA shell and reasonable conformational changes. In addition, Cu-PABA@Lac could be used repeatedly by centrifugation, as confirmed in the degradation experiment of bisphenol A (BPA). Because of the synergistic effect of copper ions between laccase and Cu-PABA, the K m value decreased (from 0.0024 to 0.0014 mM); therefore, the affinity between laccase and guaiacol was enhanced. In conclusion, the system provides a choice for immobilized acid-resistant enzymes and a solution for environmental BPA degradation.
研究领域:
环境科学
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生物技术
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Jian Wang,Yueyang Xu,Erjian Huang,Liming Kong,Jie Li,Yongping Zeng
The combustion of thiophene sulfides in fuel leads to the release of sulfur oxides (SO x ), which pose significant threats to both ecological systems and human health. Adsorption desulfurization has gained considerable attention from researchers due to its mild operating conditions, low production costs, and minimal impact on octane number. This study investigates the use of Cu-BTC as a platform for developing a novel adsorbent aimed at efficiently removing thiophenic compounds from fuel. Aluminum atoms were incorporated into the framework of Cu-BTC to create micro/mesoporous Al/Cu-BTC. Subsequently, the π-complexation adsorbent Al/Cu(I)-BTC, featuring Lewis acid sites, was synthesized through the in-situ reduction of Al/Cu-BTC using sodium thiosulfate. The adsorption properties of Al/Cu(I)-BTC for thiophene were assessed through both batch and breakthrough experiments. Al/Cu(I)-BTC-0.10(0.28) demonstrated exceptional adsorption performance. The static and dynamic adsorption capacities of thiophene at 500 and 200 ppm were 18.54 mg S/g and 9.49 mg S/g, respectively. Importantly, the adsorption capacity of Al/Cu(I)-BTC-0.10 (0.28) for thiophene in fuel containing 500 ppm sulfur remained at 15.45 mg S/g after six regeneration cycles. In the competitive adsorption of toluene, the adsorption capacity of the adsorbent for thiophene in the fuel containing 200 ppm sulfur was 7.84 mg S/g.
研究领域:
材料科学
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环境科学
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能源化学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2018
·
IF 3.141
Yongwei Chen,Houxiao Wu,Zewei Liu,Xuejiao Sun,Qibin Xia,Zhong Li
Mechanochemical synthesis, driven the chemical transformation by mechanical force, has been a rapid and efficient strategy to prepare metal–organic frameworks (MOFs). In this work, a liquid-assisted mechanochemical method has been successfully applied to the synthesis of copper based MOF-505. The crystallinity and porosity of MOF-505 were investigated by adjusting the synthesis parameters, such as added solvent (type and amount) and grinding time. Results showed that the type and amount of added solvent were crucial parameters for the mechanochemical synthesis of MOF-505. Furthermore, the optimizations of MOF-505 synthesis were carried out: grinding Cu(OAc)2·H2O and H4bptc as starting materials for 80 min with 0.4 mL of DMF assisted, giving MOF-505-K with Brunauer–Emmett–Teller (BET) surface area of 977 m2/g. Meanwhile, MOF-505-K had moderate CO2 adsorption capacity of 2.01 mmol/g at 298 K and 100 kPa. The adsorptive selectivity determined from ideal adsorbed solution theory (IAST) indicated that MOF-505-K had high CO2/N2 and CO2/CH4 selectivities (26.6 and 5.5) at 298 K. Highly efficient mechanochemical synthesis of MOF-505 provides the promise to facilitate the industrial application of CO2 capture.
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
CRYSTENGCOMM
·
2018
·Vol. 21
·期 1
·165-171
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IF 3.304
Yongwei Chen,Houxiao Wu,Qiangqiang Xiao,Daofei Lv,Feier Li,Zhong Li,Qibin Xia
Given the fact that solvothermal synthesis is the most common synthetic method to obtain metal–organic frameworks (MOFs) on a gram scale, it still remains a great challenge to produce MOFs in a scalable and sustainable synthetic process. In this work, we develop a facile and rapid synthesis of copper-based MOF-505 by the exploitation of layered (Zn,Cu) hydroxy double salt as the intermediate for efficient MOF-505 crystallization at room temperature, in which [(Zn,Cu)(OH)NO3] is synthesized by reacting ZnO with Cu(NO3)2. Under an optimized reaction time of 25 min, MOF-505-25 exhibits a Brunauer–Emmett–Teller (BET) surface area of 1076 m2 g−1 and the pore size is narrowly distributed at 5.9 and 8.0 Å. With respect to CO2 adsorption and separation performance, MOF-505-25 shows a moderate CO2 uptake of 3.51 mmol g−1 at 298 K and 100 kPa and high CO2/CH4 and CO2/N2 adsorption selectivities of 7 and 29. Particularly, the formation of MOF-505 can be completed within a short reaction time (less than 30 min) whilst maintaining high quality. This facile and rapid room temperature synthetic procedure would pave the way for promoting the development of MOF materials large-scale production with minimizing the energy input.
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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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Shouxin Zhu,Can Sun,Zijie Fang,Mingli Qin,Zhexiao Zhu,Jingyi Qu,Hui Zheng
Facing the escalating issue of antibiotic pollution and the emergence of bacterial resistance in water ecosystems, photocatalytic technology has been widely studied as one of the efficient methods to remove antibiotics in aquatic ecosystem. Herein, the bimetallic organic framework materials Cu/Zn-BTC were synthesized with varying proportions of copper and zinc as metal joints and 1,3,5-phthalic acid as organic ligands. Subsequently, the zinc elements within the MOF were eliminated through high pyrolysis to obtain carbon materials derived from Cu/Zn-BTC (referred to as 1.3CZC, 1.4CZC, and 1.5CZC based on the copper-to-zinc ratio). Notably, the presence of different valence copper species facilitated to form type II heterojunction within MOF-derived carbon materials, where internal Cu 0 /Cu + species combined with oxygen vacancies to create localized bands that prolonged the lifetime of photogenerated carriers and enhanced photocatalytic activity. X-ray photoelectron spectroscopy, Brunauer-Emmett-Taylor and other characterization methods were used to analyze the difference in structure and performance of different catalysts. 1.4CZC showed excellent performance, upon exposure to visible light for 30 min, the removal rate of tetracycline significantly increased to an impressive 92.4 %, while extending the exposure time to 60 min further improved the removal rate of ciprofloxacin to approximately 82.6 %. It provides a highly efficient antibiotics removal pathway by MOF-derived carbon materials.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Nanoscale
·
2018
·Vol. 10
·期 37
·17647-17655
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IF 7.233
Ke Yang,Yu Yan,Haiyang Wang,Zhixuan Sun,Wen Chen,Hongtao Kang,Yi Han,Wenquan Zahng,Xiaohua Sun,Zhenxing Li
A novel copper/copper(I) oxide@carbon (Cu/Cu2O@C) core–shell nanocomposite monodispersed on the surface of reduced graphene oxide (defined as Cu/Cu2O@C-rGO) was synthesized using a one-step calcination of Cu-based metal organic frameworks (MOFs)/graphene oxide (GO) composite structure. The size of the resultant Cu/Cu2O@C core–shell nanoparticles (NPs) on the rGO layers were mainly distributed in range of about 90–100 nm with good dispersion, which was characterized using transmission electron microscopy. X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, nitrogen adsorption–desorption isotherms, X-ray photoelectron spectrometry and thermogravimetric analyses were also carried out to characterize the structure and composition of the Cu/Cu2O@C-rGO. The catalytic performance of the Cu/Cu2O@C-rGO composite was evaluated using a reduction reaction from 4-nitrophenol to 4-aminophenol. It was demonstrated that the Cu/Cu2O@C-rGO composite exhibited an excellent catalytic performance, which can reach a nearly 100% conversion rate in 90 s with 0.1 mg of catalyst. This catalyst also showed a good performance for the degradation of other organic dyes such as methylene blue, methyl orange and rhodamine B. Additionally, the core–shell structure exhibited good stability and reusability for the reduction reaction, which was because of its relatively better oxidation resistance than that of the bare Cu NPs. This research provided an efficient and stable non-noble metal-based catalyst derived from the MOF/GO structure.
研究领域:
材料科学
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催化化学
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DOI
PubMed
高影响因子
Science China-Chemistry
·
2020
·Vol. 63
·期 9
·1315-1322
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IF 6.356
Zhang Wenmin,Wang Jun,Su Lichao,Chen Hui,Zhang Lan,Lin Lisen,Chen Xiaoyuan,Song Jibin,Yang Huanghao
Nanoscale metal-organic frameworks (nano MOFs) have emerged as a promising biomedical nanoplatform because of their unique properties. However, the exploration of nano MOFs in photoacoustic (PA) imaging is still limited. Here, a novel hydrogen sulfide (H 2 S)-activated nano copper-based MOF (Cu-MOF) was developed as a near-infrared (NIR) ratiometric PA probe for in vivo monitoring of endogenous H 2 S level and orthotopic colorectal cancer imaging via in situ reaction of nano Cu-MOFs with endogenous H 2 S that is closely associated with tumor growth and proliferation in colon cancer. The synthesized nano Cu-MOFs displayed excellent PA responsiveness towards tumor H 2 S level with high selectivity and rapid kinetics. The result suggests the developed probe may provide a unique opportunity to investigate the malignant behaviors of H 2 S-associated events in vivo .
研究领域:
生物医学工程
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肿瘤学
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影像医学
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DOI
高影响因子
CRYSTENGCOMM
·
2021
·Vol. 23
·期 22
·3989-3994
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IF 3.545
Anqi Li,Xiaofan Ma,Jie Ma,Qingyi Yuan,Jun Zhang,Xiaopeng Xuan
Herein we reported a simple and economical method for fabricating a portable separation device based on exfoliated 2D-metal–organic framework (2D-MOF) nanosheets. This device is composed of a layered Cu-MOF as a filter and a syringe filter as the holder. Benefiting from the structural characteristic of the 2D-MOF nanosheets, the separation experiment reveals that this strategy can exhibit high efficiency and selectivity for dyes with different sizes. This device can be used disposably for a special purpose due to the low cost, simple manufacturing process in an emergency.
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
RSC Advances
·
2018
·Vol. 8
·期 42
·23671-23678
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IF 2.936
Ke Yang,Yu Yan,Wen Chen,Hongtao Kang,Yi Han,Wenquan Zhang,Yafeng Fan,Zhenxing Li
Nowadays, sulfur compounds in fuel oils are the main source of environmental pollution and ultra-deep desulfurization of fuel oils has become a top priority. Many porous materials such as activated carbon and metal–organic frameworks (MOFs) have attracted attention in the field of adsorption desulfurization in recent years. A series of novel MOF/hydroxylated graphene hybrid materials were successfully designed and synthesized with different ratios for application in the field of ADS. The hydroxylated graphene (HG) was found dispersed not just on the surface but also inserted in the MOF crystals in what we call a nut-like structure. It was found that the introduction of a small amount (<8%) of HG does not hinder the formation of the Cu-BTC structure. Meanwhile, the adsorption performances of these composites for thiophene from oils were evaluated using batch adsorption tests at room temperature. The synergistic effect between Cu-BTC and HG in the hybrid materials can improve the adsorption capacity for thiophene molecules. The experimental equilibrium curve fitted well with the theoretical Langmuir isotherm model. The maximum sulfur adsorption capacity of 35.6 mg S g−1 for the hybrid materials was calculated using the Langmuir adsorption equation, which increased by 48% compared to parent Cu-BTC. Thus, these hybrid materials have great potential for application in the adsorptive desulfurization process, especially for thiophenic compounds.
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
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