SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Xiaoxia Liang,Jiakang Duan,Yu Tian,Yue Han,Zewan Qin,Huixia Zhu,Yating Lu,Dongyu Nie,Yingna Guo,Xia Yang
AgCl/Ag 0 shows great promise for the removal of environmental pollutants, while its photocatalytic performance is still a great challenge on account of the agglomeration. Herein, orientational deposited and octahedral AgCl/Ag 0 were obtained by etching the UiO-66-NH 2 template for the first time. The 0.35:1–AgCl/Ag 0 exhibited outstanding efficiency in the degradation of Diazinon (DZN), which was closely 300 times than that of UiO-66-NH 2 and 0.35:1–AgCl@Ag 0 prepared without a template. Its bigger surface area provided more active sites to promote mass transfer efficiency and large amounts of •OH and 1 O 2 were fabricated to offense specific positions of DZN determined through Fukui function. Meanwhile, a high removal rate of 91.0 % was obtained after 5 recycles. Finally, the results of HPLC-MS, T.E.S.T., TOC and IC indicated all intermediates had less toxicity than DZN and were rapidly mineralized. Our work developed a new strategy for designing superb performance AgCl/Ag 0 photocatalysts.
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
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhou Zhou,Dongyun Chen,Najun Li,Qingfeng Xu,Hua Li,Jinghui He,Jianmei Lu
In order to fix the photocatalyst and enhance the efficiency of NO degradation, a three-dimensional (3D) g-C 3 N 4 /NH 2 -UiO-66-rGO (CN/NU6-rGO) aerogel was devised and fabricated via solvothermal reaction and boiling-water bath. Herein, a type-II heterojunction was formed at CN/NU6 composite, and then, the composite was coupled with rGO. The resulting material significantly enhanced the nitric oxide (NO, 600 ppb) removal efficiency under visible-light irradiation. Optimizing the content of CN and rGO to a suitable mass ratio can increase the removal efficiency by 65.4%, which is 2.34 times that of pure NU6. This result is attributed to the construction of type-II heterojunction and the charge transport properties of rGO. The involvement of rGO not only provided extra pathways for charge transfer to prevent electron–hole pairs from recombining, but also fixed the catalyst. Moreover, the hybrid aerogel excellently reduced the harmful by-product NO 2 . Cycling experiments, along with transient photocurrent response measurements, verified that CN/NU6-rGO had excellent potential for recyclable and sustainable. This work might shed light on the construction of suitable photocatalytic systems with significant improvement of NO removal and convenient storage of catalyst.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
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IF 3.9
Mingyang Xiong,Yao Zeng,Ruisi Qiu,Hongxing He,Yi Zhang,Zhifeng Nie,Bing Wang
Bisphenol A (BPA) is extensively utilized as an industrial chemical in the production of certain plastics and epoxy resins. They are frequently found in environmental water and have the potential to cause risks to both the environment and human health. To efficiently remove the endocrine disruptor BPA from aqueous solutions, sea urchin-like magnetic material Fe3O4@PDA@NH2-MIL-101 (Fe) was synthesized via hydrothermal methods. Fe3O4@PDA@NH2-MIL-101 (Fe) has excellent adsorption performance, with a theoretical maximum adsorption capacity of 300.47 mg/g for BPA. The adsorption kinetics of BPA by Fe3O4@PDA@NH2-MIL-101 (Fe) followed the pseudo-second-order kinetic model and Liu’s isotherm model. Magnetic separation experiments reveal a high recovery efficiency, maintaining 94.82% of its initial adsorption capacity after five cycles. The primary adsorption mechanisms of Fe3O4@PDA@NH2-MIL-101 (Fe) on BPA included pore filling, hydrogen bonding, π–π interaction, and Lewis acid–base interaction. Additionally, the material showed excellent removal performance of BPA, with a maximum adsorbed amount of 135.27 mg/g for total organic carbon (TOC) in the shale gas fracturing flowback fluid. These findings suggest that Fe3O4@PDA@NH2-MIL-101 (Fe) holds significant potential as an adsorbent for BPA removal from actual wastewater, offering promising prospects for practical applications.
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
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
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2025
·
IF 7.3
Xiaoyan Han,Shan Wang,Tingting Cui,Yumin Yang,Haixiang Li,Haiwen Zhang,Huanhuan Zhou,Xiaoxia Li
Aristolochic acid I (AA-I), a known nephrotoxin and carcinogen, is commonly found in certain medicinal plants, posing significant safety concerns. In this work, defect-engineered, molecularly imprinted UiO-66-NH2 was synthesized via a one-pot hydrothermal method using indomethacin (IND) as a green alternative template. The resulting imprinted metal–organic framework effectively mitigates matrix interference, enabling highly selective recognition and the efficient adsorption of AA-I. Structural characterization confirmed that the imprinting process and template removal did not compromise the framework integrity of UiO-66-NH2. Spectroscopic analysis revealed that AA-I recognition was governed by Zr coordination, electrostatic interactions, and spatially confined recognition sites within the porous framework. Density functional theory calculations further elucidated the interaction mechanisms involved in the adsorption process. The imprinted UiO-66-NH2 exhibited a maximum adsorption capacity of 42.74 mg/g and an imprinting factor of 2.48. In real sample analysis, the material achieved recovery rates of 96.7–103.5% and excellent selectivity in Clematis armandii extracts. The adsorption efficiency remained above 80% after five adsorption–desorption cycles, indicating good structural stability and reusability. This work offers a promising and sustainable strategy for improving herbal medicine safety through the rational design of ecofriendly MOF-based adsorbents.
研究领域:
药用植物学
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材料科学
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分析化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Yi Wang,Tao He,Siying Lv,Jing Yang,Shihai Cui
Novel type of micro mesoporous materials Co-doped NH 2 -UiO-66 had been successfully prepared. The properties of the material were understood through a series of characterization. When the dosage of Zr:Co is 2:1, the modified material showed specific surface area of 840.02 m 2 ∙g −1 , which is larger than the material without Co. Especially, the material was transformed from microporous NH 2 -UiO-66 to micro-mesoporous Co-doped NH 2 -UiO-66 through the adjustment of metal Co. The Co-doped nanocomposite was then applied to the adsorption of oxytetracycline. The effects of initial concentration, pH, humic acid and ionic strength on the adsorption were investigated. It was found that 50 mg∙L −1 oxytetracycline can be effectively adsorbed by Co-doped NH 2 -UiO-66 in pH 7. Further research showed that adsorption was pseudo-second-order kinetics and fitted Freundlich model with the maximum adsorption capacity 223.7 mg∙g −1 . In addition, the adsorption equilibrium time was only 2 h, which is shorter than the adsorption time of most adsorbents. The mechanism of pore adsorption, π-π interaction, hydrogen bonds and electrostatic interactions was deeply discussed. In conclusion, Co-doped NH 2 -UiO-66 was a fast and effective absorbent for the removal of oxytetracycline in aqueous solution.
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
DALTON TRANSACTIONS
·
2018
·Vol. 47
·期 33
·11705-11712
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IF 4.099
Cong-Cong Shen,Ya-Nan Liu,Xin Wang,Xiao-Xiang Fang,Zhi-Wei Zhao,Nan Jiang,Liu-Bo Ma,Xiao Zhou,Tuck-Yun Cheang,An-Wu Xu
Metal–organic framework (MOF)-based materials possess numerous attractive characteristics; however, the application of MOF-based photocatalysts in the area of visible-light photocatalytic H2 evolution is still in its infancy. Herein, we develop a series of novel UiO-66-NH2-based composites with embedded NiO nanoparticles via solvothermal treatment and subsequent calcination. Their characterizations demonstrate intimate lattice-level contacts between UiO-66-NH2 photocatalysts and NiO nanoparticles. By optimizing each component, even without noble metal loading, the U6N-NiO-2 sample (the weight ratio of NiO to U6N-NiO-2 is theoretically calculated to be ca. 10 wt%) with 15 mg eosin Y as a sensitizer causes an enhanced H2 generation rate of 2561.32 μmol h−1 g−1 under visible-light irradiation using TEOA as a sacrificial reagent; furthermore, its corresponding quantum efficiency is as high as 6.4% at 420 nm. The H2 evolution activity of U6N-NiO-2 is about 5 times higher than that of the UiO-66-NH2 photocatalyst (denoted as U6N) and 23 times higher than that of U6N-NiO-2 without sensitizer. It is demonstrated that the high efficiency originates from the visible-light generated electrons of eosin Y and UiO-66-NH2, the efficient separation of carriers by the cascaded band structure and more negative CB of NiO as well as the good dispersion of NiO nanoparticles on the octahedral skeleton. This study provides new insights for the design of MOF-based materials without noble metal loading for visible-light photocatalytic H2 evolution.
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2019
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IF 3.261
Lingling Wang,Penglun Zheng,Xuefei Zhou,Mingzhen Xu,Xiaobo Liu
Novel CdS/UiO-66-NH 2 heterojunction photocatalysts have been successfully fabricated via facile water bath deposition. Compared with the traditional preparation technology, such strategy introduces deionized water as solvent, reduces production cost and simplifies the fabrication process of the heterojunction photocatalyst. Characterizations indicate that CdS nanoparticles (NPs) are uniformly interspersed on the surface of UiO-66-NH 2 and the intimate contacted heterojunction interface is generated to prevent recombination of photogenerated charge carriers. CdS/UiO-66-NH 2 with a mass ratio of 1.5:1 (CdS: UiO-66-NH 2 ) exhibits the highest photocatalytic degradation rate for RhB of approximately 92.5% in 40 min and excellent photostability through four recycles. Furthermore, Photoluminescence (PL) spectra, UV–vis diffuse reflectance spectra (DRS), transient photocurrent, electrochemical impedance spectra (EIS), Nyquist plots and Mott-Schottky plots are applied to characterize the photoelectrochemical properties. The observably enhanced photocatalytic performance can be attributed to: 1) larger specific surface area, increased photocatalytic active sites, intimate contacted interface, 2) created n-n type heterojunction, and 3) rapid separation and transfer of photoexcited interfacial charges.
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
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
·
IF 3.8
Douhao Yang,Ruiting Jian,Jianjun Yan,Ao Zhang,Bowen Liu,Zhongwei Liu
Defect engineering has a great effect on the properties of metal–organic frameworks (MOFs). In this study, the defective UiO-66-NH2 MOFs are successfully prepared by a rapid Ar plasma modification method. At certain experimental conditions (15 W radio frequency input power, 20 Pa working pressure, and 120 s Ar plasma modification time), the afforded UiO-66-NH2 shows significant enhancement in photocatalytic reduction of Cr(VI), and a maximum reduction efficiency of 68.5% is obtained. Advanced characterizations show that the plasma treatment generates missing-linker defects within the UiO-66-NH2 structure, which can enhance the separation of photogenerated electrons and holes and improve the photoreduction capability. The findings not only contribute to a better understanding of the relationship between the structure and performance of MOFs but also provide a simple approach for defect engineering of MOFs.
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
·
2025
·Vol. 27
·期 5
·678-686
·
IF 2.6
Dongling Xie,Jianan Wang,Bo Huang,Yiyi Yang,Dunmin Lin,Chenggang Xu,Fengyu Xie
Rational design of viable routes to develop affordable and efficient oxygen evolution reaction (OER) catalysts is essential for advancing electrochemical water splitting, yet significant challenges remain, particularly in seawater. Here, we propose a ligand defect engineering strategy to modify the electronic structure of NH2-MIL-88B(Fe) using a monodentate ligand (acetic acid, AcOH), inducing ligand vacancies in NH2-MIL-88B(Fe) for oxygen evolution in an alkaline seawater electrolyte, thereby improving the performance of the electrocatalysts. The resulting defective MOFs (denoted as NH2-MIL-88B(Fe)-x) exhibited exceptionally high catalytic activity for OER, requiring low overpotentials of 313 and 329 mV at a current density of 100 mA cm−2 in 1 M KOH and simulated seawater (1 M KOH + 0.5 M NaCl) solutions, respectively. Experimental analyses revealed that the introduction of AcOH can modulate the d-band center of active sites in NH2-MIL-88B(Fe)-x and play a critical role in alleviating chloride ion (Cl−) corrosion, thereby enhancing catalytic stability in seawater. When directly used as an OER catalyst in an alkaline electrolyte, wind and solar power were harnessed to operate the NH2-MIL-88B(Fe)-x || Pt/C configuration to drive the electrolytic water reaction. Thus, the ligand defect strategy can be employed to design and prepare high-performance OER electrocatalysts, particularly for generating H2 through water electrolysis powered by renewable energy sources.
研究领域:
材料科学
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电化学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xu Li,Yanli Zhang,Qingping Xin,Xiaoli Ding,Lizhi Zhao,Hui Ye,Ligang Lin,Hong Li,Yuzhong Zhang
Membrane absorption is a convenient and efficient flue SO 2 capture technology . In this study, NH 2 -MIL-125 filled mixed matrix membrane contactor (MMMC) is constructed by Non-solvent Induced Phase Separation (NIPS) method. The functional groups and metal active sites on the surface of NH 2 -MIL-125(Ti) exhibit high affinity for SO 2 . The microporous structure of NH 2 -MIL-125(Ti) provides storage for adsorbed SO 2 , which is conducive to the formation of SO 2 enrichment zone in the membrane. The membrane morphology, wetting resistance, and light responsiveness et al of MMMC have been tested. The combination of NH 2 -MIL-125(Ti) adsorption and membrane absorption process effectively promotes the transfer of gas molecules in the membrane pores. The SO 2 absorption flux of MMMC filled by NH 2 -MIL-125(Ti) has a significant increment, reaching 8.81 × 10 −4 mol·m −2 ·s −1 and 9.77 × 10 −4 mol·m −2 ·s −1 under non-light and visible light conditions respectively, which is comparability with results in literature. The membrane phase mass transfer coefficient calculated by Wilson model is 149.6 s·m −1 , which shows the low resistance in membrane. The SO 2 absorption flux keep stable after 4 cycles of tests. The membrane contactor coupled with function fillers enhances the SO 2 capture ability and further promotes the enrichment of SO 2 , which has favorable development foreground.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Shilin Wang,Shuaikang Fan,Zhou Fang,Yue Hu,Mengyang Dong,Xinsheng Peng
Stimuli-responsive conductive MOF nanoporous materials have been considered to have great potential for photoelectric conversion, information processing, bioelectronics, and smart devices. However, light-regulating hydroxide ion conduction of MOFs is rarely reported. Herein, a reversible optical switch on hydroxide ion conduction has been achieved based on the intrinsic localized photothermal heating of NH2-UiO-66 nanoparticles. The amino group on the organic ligand of NH2-UiO-66 can build a hydrogen-bond network with water molecules to promote hydroxide ion transport in the nanochannel and cause an absorption band in the visible light region. Irradiated by visible light, NH2-UiO-66 nanoparticles can absorb light and convert it into heat, resulting in partial removal of water molecules in the nanopores and destroying the hydroxide ion transport path. Then, the hydroxide ion conductivity decreased by 2 orders of magnitude. When turning off the light, the hydroxide ion conductivity can restore quickly. This work will promote the development of remotely controlled hydroxide ion conductive smart devices.
研究领域:
材料科学
·
光电转换
·
智能设备
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 24
·8540-8548
·
IF 4.39
Zixuan Li,Deyi Zhan,Abdul Saeed,Nanjing Zhao,Junfeng Wang,Weihong Xu,Jinhuai Liu
Due to their ultra-thin morphology, larger specific surface area and more exposed active sites, two-dimensional (2D) metal–organic framework (MOF) nanosheets can break the limitations of three-dimensional (3D) MOFs in sensitivity, response speed and the limit of detection for sensing applications. In this work, fluorescent NH2-MIL-53(Al) nanosheets were developed as a fluoride detection sensor compared with the 3D bulk counterpart. The morphological and structural characteristics of the obtained products were systematically characterized, and the favourable chemical and fluorescence stability of the NH2-MIL-53(Al) nanosheets were explored. The fluorescent NH2-MIL-53(Al) nanosheets showed high sensitivity, fast response speed (as short as 10 seconds), low limit of detection (15.2 ppb), and wide linear detection range (5–250 μM), and all performances were better than those of their bulk counterpart. In addition, the sensing mechanism was investigated to be based on the transformation of the NH2-MIL-53(Al) framework that induced the release of fluorescent ligands, resulting in an exceptionally enhanced fluorescence. This work highlights the advantages of 2D MOF nanosheets in fluorescence sensing applications.
研究领域:
材料科学
·
化学传感器
·
光学检测
✓ 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）