CRYSTENGCOMM
·
2025
·
IF 2.6
Bolin Ma,Guanghui Chen,Lingling Zhou,Chengyang Ni,Xinyu Sun,Lei Zhang,Xinguo Xi,Lanqin Tang,Yong Zhou
The development of highly efficient photocatalysts for CO2 reduction remains a critical challenge in achieving sustainable energy conversion. In this study, we report the synthesis of a UiO66-NH2@In2O3, integrating UiO66-NH2 metal organic frameworks (MOFs) with indium oxide (In2O3) nanoparticles, forming a robust heterostructure. Characterization results demonstrated that calcination at 250 °C for 4 hours yielded a heterostructure with indium uniformly incorporated, as confirmed by XRD, SEM, TEM and ICP-OES analyses. XPS studies revealed significant electronic interactions between UiO66-NH2 and In2O3, including shifts in binding energies of indium and zirconium, indicative of chemical bonding. This heterostructure facilitated enhanced charge separation and transfer, as evidenced by photocurrent measurements, leading to superior photocatalytic CO2 reduction performance. Under light irradiation, UiO66-NH2@In2O3 achieved a CO production rate of 83.68 μmol g−1 during the first hour and a cumulative yield of 485.08 μmol g−1 after 7 hours, significantly outperforming pristine UiO66-NH2 and In2O3. The superior activity is attributed to the large surface area of UiO66-NH2, facilitating CO2 adsorption, and the heterojunction formation with In2O3, enhancing charge carrier dynamics. These findings highlight the synergistic effects of UiO66-NH2 and In2O3, providing insights into the design of advanced photocatalysts for environmental and energy applications.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Guanzhong Zhai,Junwei Wu,Zhuorui Yuan,Hongmei Li,Daohua Sun
A major challenge in oil/water separation is the processing of surfactant-stabilized emulsions from the water medium. One of the feasible schemes of emulsion separation is the porous melamine sponge coupled with functional particles. Here, we proposed a novel superhydrophobic metal–organic framework (MOF)-based sponge for water-in-oil emulsion separation. The porous melamine sponge was combined with poly(dimethylsiloxane) (PDMS)-coated hydrophobic SiO2 and UiO66-OSiR particles were prepared for demulsification via the one-step dipping method for the first time. The PDMS@SiO2@UiO66-OSiR sponge revealed excellent superhydrophobicity at a water contact angle of 160.7° and superlipophilicity at an oil contact angle of 0°. Compared with the pristine melamine sponge, the size-controllable PDMS@SiO2@UiO66-OSiR sponge could separate stabilized water-in-oil emulsions with ultrahigh separation efficiency (>98.64%) and high flux (e.g., 970 L·m–2·h–1). Meanwhile, the PDMS@SiO2@UiO66-OSiR sponge exhibited superior durability and mechanical reusability. Under harsh conditions such as strong acid and alkali, organic solvent corrosion, etc., all water contact angles of the PDMS@SiO2@UiO66-OSiR sponge were over 152°. Furthermore, the stress decreased by 5% when the sponge was subjected to 10 loading/unloading compression cycles at a constant strain of 60%. These results demonstrate that the PDMS@SiO2@UiO66-OSiR sponge can efficiently separate water-in-oil emulsions through its adjustable porous structure coupled with demulsification and hydrophobic particles. This study provides a step forward in developing a feasible strategy for the MOF-based sponge for emulsion separation.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yujie Qiang,Haoxuan Yang,Suqi Huo,Xiaodi Dong,Seeram Ramakrishna,Xianghong Li
Active protection coatings hold great potential for safeguarding marine engineering equipment by effectively reducing metal corrosion. However, the premature and uncontrollable release of corrosion inhibitors, even in intact coatings, limits their active protection performance. Herein, Uio66 was synthesized to load 2-mercaptobenzimidazole (M), which was further encapsulated with polydopamine (PDA) to produce a Uio66-M-PDA nanomaterial. This composite was then used as a filler to develop anticorrosion waterborne epoxy (Uio66-M-PDA-WEP). Notably, PDA functions as a “faucet”, enabling the efficient storage and controllable release of M molecules. The cross-section morphology indicates that the uniformly distributed Uio66-M-PDA reduces the internal defects and improves the compactness of the coating, which further strengthens the dry (5.23 MPa) and wet (3.65 MPa) adhesion force. Due to the synergistic effect of Uio66, M, and PDA, the resistance value of Uio66-M-PDA-WEP remains 8.3 × 10 9 Ω·cm 2 after immersion in neutral salt solution for 60 d, which is 1220.6, 334.7, and 5.3 times higher than that of pure WEP (6.8 × 10 6 Ω·cm 2 ), Uio66-WEP (2.5 × 10 7 Ω·cm 2 ), and Uio66-M-WEP (1.6 × 10 9 Ω·cm 2 ), respectively. Furthermore, Uio66-M-PDA-WEP ensures the efficient storage and intelligent release of corrosion inhibitors, offering reliable active protection properties for the metal substrate. In summary, this work successfully addresses the issues of uncontrolled and premature release of corrosion inhibitors in active/passive protective coatings and offers valuable insights for practical application.
研究领域:
材料科学
·
腐蚀防护
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Wei Liu,Ming Yang,Shuang Wang,Yan-Sai Bao,Yong-He Cui,Ling-Xu Meng,Liang-Cheng Li,Yang Wu,Yu-Yang Zhang
Solid-phase microextraction (SPME) has been widely used for the analyzing trace organic pollutants in environmental samples. The properties of coatings have a significant effect on the application range, selectivity and sensitivity of existing analytical methods. Therefore, the development of SPME technology depends on fibers with a stable, efficient, and selective coating. In this study, metal-organic frameworks (MOFs) were used to fabricate porous carbon membranes in situ for SPME. The composite material (UIO66-NH 2 @PAC) was directly carbonized to prepare a derivative porous carbon material (C-UIO66-NH 2 @PAC), which was applied to the extraction of off-odour organic pollutants for the first time. The Zr-N co-doping in the material was not only beneficial to the formation of derivatized porous carbon, but also endowed it with a certain hydrophilicity, which was highly advantageous for capturing weakly polar compounds. By optimizing the extraction and desorption conditions, a highly selective and sensitive analytical method was developed, which exhibited a detection limit of 0.61 and 0.78 ng L −1 for 2-methylisoborneol (2-MIB) and geosmin (GSM), respectively, along with a linear range from 10 to 3000 ng L −1 . Both intra-fiber repeatability (RSD 5.5 % and 3.7 %) and inter-fiber repeatability (RSD 9.7 % and 8.8 %) were satisfactory. The fiber coated with C-UIO66-NH 2 @PAC exhibited high extraction efficiency (the extraction efficiency of the analytes was 4.6–8.3 times higher than that of commercial fibers), and had excellent thermal and chemical stability. Finally, the C-UIO66-NH 2 @PAC-coated fibers were successfully applied to the SPME analysis of off-odour organic pollutants in real water samples, and these results highlighted the broad prospect for the detection of natural/drinking water.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
ELECTROANALYSIS
·
2019
·Vol. 32
·期 3
·462-469
·
IF 2.691
Xiaomeng Shan,Tao Pan,Yuting Pan,Wenchang Wang,Xiaohui Chen,Xueling Shan,Zhidong Chen
In this study, a novel electrochemiluminescence (ECL) sensor for highly sensitive and selective detection of Pb(II) was developed based on Ru(bpy) 3 2+ encapsulated UiO66 metal-organic-framework (Ru(bpy) 3 2+ −UiO66 MOF) and −NH 2 group functionalized silica (NH 2 −SiO 2 ). The NH 2 −SiO 2 with large surface area provided an excellent platform for the ECL sensor. As numerous exposed carboxyl groups were present on UiO66 backbone, the Ru(bpy) 3 2+ −UiO66 could be steadily immobilized to NH 2 −SiO 2 by forming amide bonds. Meanwhile, the introduced UiO66 MOF which used for the encapsulation of Ru(bpy) 3 2+ , significantly enhanced the ECL efficiency of the proposed sensor, as it possessed a large specific surface area and porosity for the loading of Ru(bpy) 3 2+ . Moreover, a high quenching effect on ECL intensity was obtained in the presence of Pb(II) in the electrolyte. Under the optimal conditions, the quenched ECL intensity showed a good linear relationship within Pb(II) concentration in the range from 1.0×10 −6 to 1.0×10 2 μM, with a detection limit of 1.0×10 −7 μM ( S / N =3). The proposed sensor for Pb(II) detection was simple in operation, rapid in testing, stable in signal, and showed a good anti-interference ability to some other metal ions. Besides, its application for detecting Pb(II) in a real sample was also investigated here. This work provides a potential platform for metal ions detection in environmental monitoring field.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2023
·
IF 6.1
Wubin Wang,Jin Wang,Yaqing Zhang,Qingyun Zhang,Kaili Huo,Chao Han
Developing polymer membranes with high permeability, fouling resistance, and rejection capability is a challenging task that requires the use of novel materials to enhance these properties. In this study, composite ultrafiltration membranes were fabricated by incorporating two types of metal–organic frameworks (MOFs), UIO66 and UIO66@PDA, into polyvinylidene fluoride (PVDF) using the nonsolvent thermally induced phase separation (NTIPS) method. The results demonstrated that the NTIPS method combined the characteristics of nonsolvent-induced phase separation (NIPS) and thermally induced phase separation (TIPS) to fabricate asymmetric membranes with a dense ultra-thin top layer and a bicontinuous network structure. Moreover, the introduction of 1.0 wt% UIO66@PDA into PVDF membranes yielded notable improvements in mechanical strength, thermal stability, and porosity. Concurrently, this led to a water flux rise from 182.5 to 464.7 L·m −2 ·h −1 , and enhanced BSA and HA rejection to 96% and 83%, respectively. Additionally, there was a significant improvement in the membrane's antifouling capacity, achieving a water flux recovery ratio of 93%. This was facilitated by the increased hydrophilicity of UIO66@PDA, which attracted more water molecules and reduced membrane fouling. This work offers a solution to overcome the permeability-selectivity trade-off in membrane separation by hydrophilic modification of hydrophobic membranes, while also addressing fouling issues.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 191
·期 1
·1-11
·
IF 5.7
Zhao Le,Han Shuang,Sun Ruonan,Yan Chen
Protein-templated molecularly imprinted polymers have limitations such as poor mass transfer, slow recognition kinetics, and difficulties in isolation and purification due to their large molecular sizes, complex structures, and flexible conformations. To address these limitations and obtain lysozyme (Lyz)-imprinted polymers, a molecularly imprinted polymer (UiO66@DES-MIPs) was prepared for the first time by using Lyz as a template molecule, a metal–organic framework (UiO66-NH 2 ) as a matrix, and a water-compatible deep eutectic solvent (DES) as a functional monomer. The introduction of UiO66-NH 2 by the solvothermal method with a large specific surface area and favorable stability and resistance to environmental disturbances into the MIPs can reduce the “embedding” phenomenon and acquire a higher binding capacity and fast mass transfer. In addition, a water-soluble binary DES (1:2 molar ratio of choline chloride to 1,3 dimethylurea) prepared by a hydrothermal method as a functional monomer generates multiple forces with Lyz, increasing the hydrophilicity of UiO66@DES-MIPs and contributing to the formation and stabilization of the imprinted sites. Consequently, UiO66@DES-MIPs exhibited good selectivity, water compatibility, and fast adsorption equilibrium (the adsorption equilibrated at 243.87 ± 4.88 mg g −1 in 90 min). Besides, reusability experiments indicated that the UiO66@DES-MIPs could be recycled six times without obvious loss of adsorption capacity. The imprinting factor of UiO66@DES-MIPs is 3.67. The isolation and purification of Lyz from egg white confirmed the practicability of UiO66@DES-MIPs. The high adsorption capacity and specific recognition make this polymer a promising candidate for the isolation and purification of biological macromolecules. Graphical
研究领域:
材料科学
·
高分子科学
·
生物分离
·
纳米技术
·
分析化学
✓ 已验证
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Yanyan Shao,Qian Tao,Luyao Shao,Jing Bi,Qian Wang,Zhigang Wang,Xuan Sun
Aflatoxin B1 (AFB1) exhibits significant toxicity and pose a serious threat to food safety, environmental hygiene, and public health even in trace amounts. Hence, the development of a rapid, accurate, and sensitive detection technology has become a pivotal aspect of ensuring control standards. In this study, we introduce the UIO66 and two defective dichloroacetic acid@UIO66 (DCA@UIO66, DU) metal–organic framework nanoparticles, named DU1 and DU2, characterized by different defect levels. It is noteworthy that DU1 exhibits superior DNA sensing capability compared to UIO66 and DU2. With a fluorescence quenching efficiency of 92.66 % and a recovery efficiency of 1256.75 %, DU1 demonstrates the substantial potential in the detection field. Furthermore, we employ cascade isothermal amplification to assist DU1–mediated fluorescence sensors in detecting AFB1. AFB1 is efficiently identified through an aptamer competition process facilitated by magnetic nanoparticles, which initiates the exponential amplification triggered rolling circle amplification reaction, and converts trace amounts of toxin signal into a large number of long single–stranded DNA molecules. Upon recognition of the amplification product by the fluorescent probe on DU1, a more stable double–stranded DNA is formed and leaves the surface of DU1, leading to a significant change in fluorescence intensity. This method exhibits acceptable sensitivity, with a detection limit of 0.09 pg mL −1 and a wide detection range spanning from 0.2 pg mL −1 to 20 pg mL −1 . Additionally, this assay exhibits satisfactory specificity and high accuracy in practical sample applications. Our proposed method offers a solid theoretical framework and technical backing, thereby facilitating the establishment of a new generation of mycotoxin detection standards.
研究领域:
分析化学
·
纳米技术
·
食品安全
·
环境科学
·
公共卫生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysts
·
2022
·Vol. 13
·期 1
·81
·
IF 4.501
Ying Zhang,Junya Liao,Hao Liang
DNA-based biomimetic enzymes have attracted extensive attention due to their unique structure and stability compared to natural enzymes. Meanwhile, the specific sequences of DNA itself also have a catalytic effect. Herein, we first designed three guanine-rich DNA sequences numbered c−Myc3c, PG4TC, and TTT to construct g−quadruplex/hemin DNAzymes. Then, the g−quadruplex/hemin DNAzymes with the best activity were selected by a comprehensive examination of activity, degradation rate, and affinity. Subsequently, the stability and reusability of UiO66−DNAzymes were investigated using UiO66 as the carrier to immobilize DNAzymes. The results showed that UiO66−DNAzymes had excellent reusability and stability. Finally, UiO66−DNAzymes were successfully used for glucose detection by cascading with glucose oxidase (GOx) with a detection limit of 0.62 μM. The constructed glucose sensor had a good specificity, which is of great significance for developing a novel, accurate, fast, and economical glucose detection sensor.Keywords:metal-organic frameworks;DNAzymes;enzyme immobilization;biomimetic enzymes;glucose detection
研究领域:
生物化学
·
纳米技术
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Hai-Zhen Zhang,Jing-Ying Sun,Zhen-Lin Zhang,Zhen-Liang Xu
Water pollution is a growing issue that requires remediation. Surfactants, used in many domestic and industrial applications, are one of the emerging contaminants that require immediate concern. Removing low-concentration surfactants using nanofiltration (NF) membrane is a study that deserves attention. In this case, a mixed polyamide-based NF membrane was fabricated via interfacial polymerization (IP) using polyethylenimine (PEI) and piperazine (PIP) as monomers in aqueous solution. UiO66-NH 2 and UiO66 were synthesized and incorporated into the polyamide layer to enhance the permeability of the prepared NF membranes. The pure water flux of the NF membranes reached 16.6 L m −2 h −1 bar −1 when UiO66-NH 2 concentration in aqueous solution is 0.005 wt%, and the membrane showed decent rejection to divalent salts, 96.5% to MgCl 2 and 85.6% to Na 2 SO 4 . The prepared membranes were utilized to remove surfactants with the concentration (100 mg L −1 ) below the critical micelle concentration (CMC) from water, and they showed good removal to both anionic and cationic surfactants . In addition, the durability of the fabricated NF membranes is acceptable. This work provides a feasible strategy for the fabrication of highly permeable NF membranes and demonstrates the capability of NF membrane for surfactants removal.
研究领域:
环境科学
·
材料科学
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 30
·期 12
·32641-32654
·
IF 5.19
Zhou Meiling,Yang Hua,Wang Zejun,Ren Jiarui,Wang Rongmin,He Yufeng
The environmental pollution with fluoride compounds was currently being paid more and more attention as it threatens the safety of animal and human life in an ecosystem. In this study, an eco-friendly adsorbing material for removing fluoride ion (F − ) was prepared by hydroxyapatite nanowires (HAnWs), a typical biocompatible inorganic conjugates. UiO66, a typical zirconium-based metal–organic framework (MOF), was conjugated onto HAnW by a simple in situ hydrothermal reaction, which afforded a novel HAnW-based nanotwigs of conjugates like millet (UiO66@HAnWs). Being characterized by SEM, EDS, FT-IR, XRD, XPS, and TGA, the obtained UiO66@HAnWs were applied to removing F − in wastewater, and its adsorption capacity was optimized. It was found that UiO66@HAnWs had a bigger specific surface area (115.310 m 2 /g), and its efficiency for removing F − got to 99.3%, which was greatly improved than that of related materials. It was considered that the adsorption of F − on UiO66@HAnWs was mainly multi-molecular layer adsorption, which fluoride ions aggregate on the Zr(IV) active sites to attain ligand switching, and the nanoconjugated structure like nanotwigs of millet greatly improved its adsorption capacity. In summary, a novel eco-friendly UiO66@HAnWs with nanoconjugated structure could be constructed by simple hydrothermal method, which the agglomeration defects of MOFs were not only ameliorated, but also its adsorption capacity was greatly improved.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2026
·
IF 3.6
Runqi Yao,Jixing Huang,Zelin Gao,Hengbiao Zhang,Li Yang,Dekui Zhang,Tuanjie Che,Yuchao Li,Honghan Dong,Xusheng Xia,Ning Wang,Liyun Ding
Detecting the concentration of chloride ions in water and soil is of great significance for understanding chloride behavior in the ocean and monitoring environmental pollutants. A novel fluorescent chloride ion optical fiber sensor has been developed based on UiO-66-lucigenin complex, in which UiO-66 enhances the photostability of the fluorescent probe lucigenin and facilitates the adsorption of chloride ions. UiO-66-lucigenin complex were encapsulated in cellulose acetate through the physical embedding method to form a chloride ion sensitive fluorescence probe. This portable optical fiber sensor is capable of detecting chloride ions in both water and soil environments simultaneously with high sensitivity, excellent stability, rapid response time and resistance to ion interference. These features make it a promising tool for chloride ion detection in complex environmental conditions. Looking ahead, this sensor holds broad application prospects for detecting chloride ions in complex environments.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）