COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
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IF 3.99
Yuan Tang,Xiaohong Yin,Manman Mu,Yue Jiang,Xiaoli Li,Hao Zhang,Tianwei Ouyang
A series of anatase TiO 2 @MIL-101(Cr) was synthesized using the solvothermal method for photocatalytic degradation of bisphenol A (BPA). The characterization of the composites showed that they had an octahedral shape that was similar to that of MIL-101(Cr), but the particle size was reduced to about 300–500 nm. The amount and surface area of the TiO 2 in the composites jointly influenced the photocatalytic degradation; in optimal conditions, 59 % TiO 2 @MIL-101(Cr) could achieve 99.4 % BPA degradation in 240 min under UV irradiation. This superior photocatalytic performance was the result of the effective separation of electron-hole pairs and a narrow band gap. Moreover, the optimal composite exhibited excellent stability, indicating its suitability for reuse. Reasonable pathways of BPA degradation were proposed based on the detected intermediates during the degradation, where the oxidative radical O 2 − played a dominant role.
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
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Mengyao Li,Ping Wu,Xiaoli Han,Shanshan Shi,Shiping Zhang,Li Wang,Min Xu,Xiulan Huai
Adsorption-based thermal energy conversion systems offer a sustainable solution for space heating and cooling applications. However, due to the limited performance of solid adsorbents, the large-scale application of this technology still requires further research. To address this challenge, we developed a composite adsorbent by integrating a graphene oxide (GO)-modified metal-organic framework (MIL-101(Cr)) with LiCl. The material was characterized using a variety of techniques to assess its improvement in three areas: water adsorption performance, heat propagation rate and stability. The synthesized material was systematically characterized to evaluate three key performance parameters: water adsorption capacity, thermal conductivity, and cyclic stability. The optimized composite LMG-3 (90 wt% LiCl) exhibits a tenfold increase in water absorption capacity compared to MIL-101(Cr)@GO at P/P 0 = 0.3. The introduction of GO significantly increases the heat diffusion coefficient, and the material exhibits excellent cyclic stability and inhibits salt deliquescence, demonstrating its potential for adsorptive thermal storage applications.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Yuwei Liang,Chunling Hu,Peng Chen,Qi Li,Jianning Wu,Zhiyong Liu,Jichang Liu,Yanlong Tai
5-hydroxymethylfurfural (HMF) can catalyte into 2,5-diformylfuran (DFF) which had received much attention as a potential biomass resource. Here, we used a simple and effective method to construct hollow CdS quantum dot (CdS QDs)/MIL-101 heterostructures with high contact area and multiple active sites. The structure of heterostructures could improve photocatalytic activity by charge transfer, photogenerated carrier separation and the multiple refractions of light supported within the hollow-structured CdS QDs. The detailed catalytic mechanism was illustrated by trap agent experiments and electron paramagnetic resonance (EPR) spectroscopy, in which superoxide radicals (·O 2 - ) play a decisive role in the catalytic oxidation of HMF to DFF. Furthermore, the large specific surface area of MIL-101 adsorbs O 2 from the reaction system thereby accelerating the ·O 2 - formation process. Under environmental conditions, 70 % CdS QDs/MIL-101 exhibited optimal catalytic performance. Comparing with pure CdS QDs, the photocurrent enhances 1.8 times, HMF conversion is 1.5 times and DFF selectivity is 1.2 times. This work provide a useful way to improve the conversion of biomass by Z-heterostructures under ambient conditions.
研究领域:
化学工程
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材料科学
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环境科学
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DOI
高影响因子
Scientific Reports
·
2019
·Vol. 9
·期 1
·1-11
·
IF 4.011
Wang Linjuan,Zan Ling
Compositing nanoparticles photo-catalyst with enormous surface areas metal–organic framework (MOF) will greatly improve photocatalytic performances. Herein, WO 3 nanoparticles are partly embedded into pores of MIL-101 or only supported on the outside of representative MIL-101, which were defined as embedded structure WO 3 @MIL-101@WO 3 and coating structure WO 3 &MIL-101 respectively. Different pH, concentration and loading percentage were researched. XRD, TEM and BET were carried to analyze the composites. Compared with the pristine WO 3 , all WO 3 loaded MOF nanocomposites exhibited remarkable enhancing for the efficiency of photocatalytic degradation methylene blue under visible light. Their activity of the same loading percentage WO 3 in embedded structure and coating structure have increased for 9 and 3 times respectively compared with pure WO 3 . The WO 3 @MIL-101@WO 3 has 3 times higher efficiency than WO 3 &MIL-101, because the shorter electron-transport distance can make a contribution to electron–hole separation. The further mechanism involved has been investigated by radical quantify experiment, XPS and photoluminescence spectroscopy.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2019
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IF 6.361
Zongchen Li,Xuemin Liu,Wei Jin,Qingsong Hu,Yaping Zhao
Arsenic species are regarded as typical water pollutants due to their toxicity. The chemical structures of arsenic species greatly influence their migration and transformation in the environment. Metal-organic frameworks (MOFs) are used as reliable adsorbents to control arsenic contamination, so it is urgently needed to study the effect of chemical structure of arsenic species during adsorption process. The adsorption behaviors of arsenate (As(V)) and its organic forms such as roxarsone (ROX), p-arsanilic acid (p-ASA) and dimethyl arsenate (DMA) by MIL-101(Fe), a type of highly porosity iron-based MOFs in aqueous environment were detailed investigated. The adsorption kinetics of those arsenic species on MIL-101(Fe) is rapid followed with pseudo-second-order kinetic model. MIL-101(Fe) exhibits excellent adsorption capacities for As(V), ROX, p-ASA and DMA with maximum adsorption capacities of 232.98, 507.97, 379.65 and 158.94 mg g −1 , respectively. The formed Fe O As inner-sphere coordination between arsenic species and the incomplete-coordinated cationic Fe in the MIL-101(Fe) cluster is the primary adsorption mechanism based on FTIR and XPS analysis. Substituent aromatic units in ROX and p-ASA strengthen the adsorption on MIL-101(Fe) through hydrogen bonds and π-π stacking interaction, resulting in higher adsorption capacities far beyond that of As(V) and DMA. The reusability of MIL-101(Fe) is limited by the strong Fe O As coordination. These results confirm MIL-101(Fe) a reliable adsorbent to control the aqueous arsenic species contamination and emphasize the significant role of the chemical structure of arsenic speciation on adsorption performances of MOFs.
研究领域:
环境科学
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材料科学
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化学
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DOI
PubMed
高影响因子
CATALYSIS LETTERS
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2022
·Vol. 153
·期 4
·1159-1169
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IF 2.936
Liang Jilei,Fan Mengwei,Wu Wenjie,Wu Mengmeng,Cai Wangshui,Xinxing Gao,Huang Tingting,Rui Haiyun
This study shows the successful encapsulation of sandwich cobalt–tungsten polyoxomolybdate (Na 12 [WCo 3 (H 2 O) 2 (CoW 9 O 34 ) 2 ], abbreviated as CoWPOM) guest in mesoporous metal–organic framework MIL-101 host under static condition via a facile post-synthesis strategy. Several characterizations including powder XRD, FTIR, TGA, SEM–EDS, UV–vis DRS, XRF, and low temperature N 2 adsorption–desorption isotherm demonstrate the incorporation and homogenous-distribution of the sandwich CoWPOM guests in cavities of the MIL-101 host. The CoWPOM@MIL-101 composite possesses a better synergistic effect, and it demonstrates an excellent oxidative desulfurization catalytic activity with the DBT removal of 98.1% and recyclability at least 5 times without obvious activity decrease. Graphical Abstract
研究领域:
材料科学
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催化化学
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DOI
高影响因子
CELLULOSE
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2022
·Vol. 30
·期 1
·201-209
·
IF 6.123
Zhou Yichen,Hu Zhirong,Yu Mengjiao,Zhang Lu,Yao Jianfeng
Mixed matrix membranes (MMMs) are expected to be strong competitors in gas separation membranes. Nevertheless, the poor interaction between fillers and matrix is a major restriction to prepare MMMs with a higher separation performance. In this work, MIL-101(Cr) was functionalized with −NH 2 , −COOH, and benzenesulfonic acid (−PhSO 3 H) group and these functionalized MIL-101 particles were embedded in cellulose nanofibers (CNFs) to form MMMs. The interaction effect of functionalized MIL-101 with CNFs on the separation performance was discussed. After the adjustment of MIL-101-NH 2 loading, the resulting MIL-101-NH 2 /CNF membrane with 5 wt% loading exhibited enhanced H 2 permeance of ~ 2.56 × 10 − 7 mol m −2 s − 1 Pa − 1 with H 2 /CO 2 ideal selectivity of ~ 21.9.
研究领域:
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
SCIENCE OF THE TOTAL ENVIRONMENT
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2021
·
IF 7.963
Yawen Cai,Jinghua Feng,Xiaoli Tan,Xin Wang,Zhimin Lv,Weiwei Chen,Ming Fang,Haining Liu,Xiangke Wang
The efficient decontamination of pertechnetate ( 99 TcO 4 − ) is an essential task for managing radioactive 99 Tc in nuclear wastes . Perrhenate, (ReO 4 − ), as a nonradioactive analog, exhibits almost identical physicochemical properties as 99 TcO 4 − . Herein, a novel magnetic amine-functionalized MIL-101(Cr) (NH 2 -MIL-101(Cr)@Fe 3 O 4 ) was prepared and used to efficiently remove ReO 4 − from solution for the facile magnetic separation. A series of environmental parameters were considered to investigate the adsorption performance of NH 2 -MIL-101(Cr)@Fe 3 O 4 . Experimental results suggested that NH 2 -MIL-101(Cr)@Fe 3 O 4 has reached a satisfied adsorption capacity (~401 mg/g) and a very fast adsorption kinetics at pH 7.0. The selectivity for ReO 4 − was maintained even in the presence of interfering anions with relatively high concentrations. ReO 4 − were mainly captured by N-donor sites of the surface-decorated amine via complexation and were trapped in the cavities of modified MIL-101(Cr). NH 2 -MIL-101(Cr)@Fe 3 O 4 exhibits satisfactory adsorption performance for ReO 4 − and can be conveniently separated from wastewaters after adsorption.
研究领域:
环境科学
·
材料科学
·
放射化学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Tien Tran Nguyen,Minh Kim Nguyen,Vipin Kumar,Ha Huu Do,Anh Thi Kim Le,Anh Van Nguyen,Jin Seog Gwag,Pham Cam Nam,Le Gia Trung
The widespread use and subsequent release of antibiotics by humans and animals pose health and environmental risks, compelling their removal from aquatic ecosystems. MIL-101(Cr), a metal-organic framework (MOF), exhibits versatile applications in antibiotic adsorption owing to its exceptional structural characteristics. In this context, MIL-101(Cr) nanoparticles are successfully prepared via the hydrothermal method to remove pefloxacin (PEF) from aqueous solutions. The resulting MIL-101(Cr) adsorbents showcase high crystallinity (97.6%), a large surface area (3166 m 2 /g), broad nanopore sizes, good thermal stability, and efficient reusability. Factors including initial PEF concentration, pH, dosage of adsorbent, and temperature are thoroughly investigated. The findings reveal a good adsorption capacity (254.3 mg/g) with an optimal removal efficiency (99.7%) at 308 K in a neutral pH of 7.0 when the adsorbent dosage is 250 mg/L and the initial PEF concentration is 200 mg/L within 80 min of contact. Among the three adsorption isotherms (Langmuir, Freundlich, Temkin models), the Langmuir equation best fits the studies, indicating a maximum adsorption capacity of 253.8 mg/g at 25°C, while the experimental equilibrium adsorption capacity is 229.2 mg/g at the same temperature. Adsorption kinetics aligns with the pseudo-second-order model. Thermodynamic parameters and activation energy affirm the endothermic and spontaneous behavior of the adsorption process, attributed to both physisorption and chemisorption. This study highlights the promising potential of synthesized MOF nanocrystals as an effective adsorbent for antibiotics in wastewater treatment and environmental remediation.
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
JOURNAL OF POROUS MATERIALS
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2025
·
IF 3.2
Rui Guofen,Hu Zihao,Wu Huiqi,Ma Jianfeng
Composites of MIL-101(Fe)/CoFe 2 O 4 were prepared by a simple solvothermal approach and these composites were explored for tetracycline (TC) degradation by using light and persulfate (PS). MIL-101(Fe)/CoFe 2 O 4 catalyst showed superior catalytic performance when combined with photocatalysis and chemical catalysis. Experimental results suggest that the degradation efficiency reached 83% within 40 min. The TC adsorption ability of MIL-101(Fe)/CoFe 2 O 4 was tightly associated with pH, which can be interpreted through isoelectric point. Oxygen-active species, containing singlet oxygen ( 1 O 2 ) or superoxide radicals (O· 2‾), were also generated when there was dissolved oxygen, which could decompose the TC organic contaminant in solution. To be specific, MIL-101(Fe)/CoFe 2 O 4 /PS/Vis catalytic system was capable of eliminating TC through forming h + , 1 O 2 , O· 2‾, hydroxyl radicals (·OH) and sulfate radicals (·SO 4 ‾) species. Moreover, MIL-101(Fe)/CoFe 2 O 4 composite material showed outstanding stability.
研究领域:
环境科学
·
催化材料
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2025
·
IF 9
Yunqi Zhou,Ye Yuan,Xinlei Liu,Zhi Wang
Metal-organic framework (MOF) membranes with proper pore size distribution and functional groups are generally more suitable for separation. Most MOFs are characterized by a hierarchical pore structure, which possesses large cavities surrounded by small windows. Fabrication of MOF membranes only retaining microporous fragment structure is a workable method to narrow pore size distribution. In this study, well-grown NH 2 -MIL-101(Cr) fragment membranes were fabricated for CO 2 separation by adjusting acetic acid – ligand – metal ratio to balance the nucleation and growth. NH 2 -MIL-101(Cr) fragment has a similar chemical structure to NH 2 -MIL-101(Cr) as expected, but only small pores with size around 0.56 nm is retained. The NH 2 -MIL-101(Cr) fragment membranes exhibited CO 2 /N 2 selectivity of about 37 with CO 2 permeance up to 6104 GPU.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
Materials
·
2022
·Vol. 15
·期 10
·3645
·
IF 3.748
Minmin Zou,Ming Dong,Mingliang Luo,Hexin Zhu,Tian Zhao
Hierarchically porous MIL-101(Cr) (H-MIL-101(Cr)) with meso/macro-pores was directly prepared via nanofusion progress by using butyric acid as a modulating agent. In the methyl orange (MO) adsorption experiments, H-MIL-101(Cr) showed a high adsorption capability of 369.8 mg g−1, which was 1.52-fold greater than that of pristine MIL-101(Cr) (P-MIL-101(Cr)). While in the oxidation reaction of indene and 1-dodecene tests, H-MIL-101(Cr) presented much higher catalytic efficiency, with turnover frequency (TOF) values of 0.7242 mmol g−1min−1and 0.1492 mmol g−1min−1, respectively, which were 28% and 34% greater than that in the case of P-MIL-101(Cr). Thus, compared with P-MIL-101(Cr), H-MIL-101(Cr) exhibited better removal efficiency and higher levels of activity in the oxidation reactions of indene and 1-dodecene. The unique structure of H-MIL-101(Cr) also contributed to its superior performance in these processes.Keywords:hierarchically porous;MIL-101(Cr);butyric acid;MO adsorption;catalysis
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）