JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2024
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IF 1.5
Guo Dingge,Xiao Jing,Ning Yang,Yu Hongchao,Jin Tianxiang,Huang Bin,Qian Yong
The efficient removal of thorium from the environment is critical due to the risks it poses to organisms. Metal–organic frameworks are favored by scholars because of their potential to effectively adsorb a variety of heavy metal ions in wastewater treatment. In this work, the interaction of UiO-66-NH 2 surface with graphene, enhances adsorption capacity of MOFs. Optimal adsorption conditions have been identified, and a detailed adsorption mechanism has also been comprehensively discussed. The theoretical maximum adsorption capacity exhibited by UiO-66-GO is 119.57 mg g −1 . Moreover, it shows a fast adsorption rate and reached equilibrium within 20 min. The development of materials with good adsorption performance and fast adsorption for Th(IV) plays an important role in the development of Th(IV) adsorption in the future.
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 COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xiangrong Li,Shaohua Xie,Dongman Hou,Wenliang Wang,Guoqiang Li
Indium nitride (InN) exhibited significant potential as a photoelectrode material for photoelectrochemical (PEC) water splitting, attributed to its superior light absorption, high electron mobility, and direct bandgap. However, its practical application was constrained by rapid carrier recombination occurring within the bulk and at the surface. To address these limitations, researchers developed InN/UiO-66 heterojunction photoelectrodes, which markedly enhanced PEC water splitting for hydrogen production. Functionalization of the UiO-66 metal–organic framework (MOF) with hydroxyl (–OH) groups optimized the bandgap and improved light absorption, facilitating efficient charge separation and transfer processes. The functionalization also mitigated surface defect states in the InN nanorods (NRs), which were a major source of photogenerated carrier recombination, thereby enhancing overall photocatalytic activity. Compared to pristine InN NRs, the optimized InN/UiO-66-(OH) 2 electrode achieved a photocurrent density of −0.42 mA cm −2 and an applied bias photon-to-current efficiency (ABPE) of 0.47 % at −0.5 V vs. reversible hydrogen electrode (RHE). Furthermore, the InN/Ag/UiO-66-(OH) 2 system demonstrated a hydrogen production rate of 1.82 μmol min −1 under AM 1.5G illumination, with excellent long-term stability. This study provided critical insights into the design of efficient and durable PEC photoelectrodes, achieved the highest hydrogen yield reported for indium-based photocathodes to date, and underscored the promise of InN-based materials for solar-driven hydrogen production in the context of clean energy applications.
研究领域:
材料科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2025
·
IF 4.3
Tao Shen,Guodong Wu,Li Yin,Tianen Chen,JiYe Fan,Yuanhao Wang,Shifeng Wang
Developing efficient adsorbents for removal of organic pollutants and heavy metals is essential for environmental protection. In this study, a series of GO/UiO-66-(OH)2 composites were synthesized and characterized using XRD, FT-IR, and SEM, confirming enhanced thermal stability, reduced aggregation, and maintained crystallinity of UiO-66-(OH)2 due to GO incorporation. Batch adsorption experiments showed that GO increased the adsorption capacity, with GO-8/UiO-66-(OH)2 achieving 324.2 mg/g for diclofenac sodium (DCF) and 429.3 mg/g for Hg2+. DCF adsorption was primarily governed by physisorption, while Hg adsorption was chemisorptive, involving strong coordination with oxygen functional groups. Kinetic and isotherm studies revealed the suitability of the pseudo-second-order and Freundlich models, with thermodynamic analysis showing exothermic DCF adsorption and endothermic Hg2+ adsorption. The composites also exhibited high selectivity and stable regeneration, making them promising candidates for practical 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
PubMed
高影响因子
CHEMICAL PHYSICS
·
2019
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IF 1.822
Xue Song,Pan Yang,Dongxue Wu,Pengxiang Zhao,Xiaochong Zhao,Lijun Yang,Yuanlin Zhou
Metal-organic frameworks have remarkable advantages of high specific surface area, tunable pore structure, species diversity and superior stability causing it be a good adsorbent for methylene blue removal. Here, UiO-66 was prepared by two-step simple method at room temperature, then the effects of water on morphology, crystallinity and adsorption properties of UiO-66 were studied. UiO-66 exhibits good adsorption performance of MB with maximum adsorption amount of 543.48 mg g −1 and good cycling stability.
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Qin Cheng,Jinping Gan,Kai Cai,Ming Xia,Yi Wu,Shanshan He,Pan Cheng,Qihao Guo,Ke Liu,Dong Wang
High-quality polyamide (PA) nanofiltration (NF) membrane with excellent selectivity and permeability is of great research significant because of their high practical application value, especially for the precise separation of divalent and monovalent ions, such as Mg 2+ and Li + . Herein, UiO-66-NH 2 nanoparticles (NPs) decorated ethylene vinyl alcohol copolymer (EVOH) nanofiber substrate (M-NFM) was utilized to construct high-quality Janus NF membrane through interfacial polymerization (IP) reaction using polyethyleneimine (PEI) and piperazine (PIP) as aqueous phase monomers and trimesoyl chloride (TMC) as organic phase monomers. The incorporation of UiO-66-NH 2 NPs significantly influenced the hydrophilicity, surface morphology, and pore structure of the substrate, thereby enhancing the properties of the resulting NF. Optimally prepared membranes demonstrated improved separation performance, permeability, stability, and antifouling characteristics compared to the unmodified substrate. Notably, at a Mg 2+ /Li + ratio of 30, the resultant NF membrane achieved a separation factor (S Mg 2+ /Li + ) of 28.4 and a salt permeation flux of 156.8 L·m -2 ·h -1 ·MPa -1 . Additionally, the membrane exhibited over 98% rejection rates for FeCl 3 , CuSO 4 , CaCl 2 , MgSO 4 , MgCl 2 and Na 2 SO 4 with fluxes exceeding 150 L·m -2 ·h -1 ·MPa -1 , highlighting its effectiveness in rejecting multivalent ions. This research presents a simpler and more reliable approach to the fabrication of high-quality Janus PA NF membrane, offering promising potential for industrial-scale applications.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2019
·
IF 5.589
Yalan Wang,Nan Zhang,Danni Chen,Dan Ma,Guoguang Liu,Xuegang Zou,Yuping Chen,Ranjun Shu,Qingyun Song,Wenying Lv
The adsorption behavior and mechanism of Cr(VI) on different acid-modified UiO-66s (Form-UiO-66 and Ac-UiO-66) were systematically investigated for the first time through a series of characterizations, and theoretical calculations of batch experiments. The characterization results demonstrate that acid-modified UiO-66 exhibited a larger specific surface area than did unmodified UiO-66. In addition, since the regulator (formic acid) of Form-UiO-66 was the stronger competition, the specific surface area of Form-UiO-66 (1138 m 2 g −1 ) was larger than that of Ac-UiO-66 (915 m 2 g −1 ). Under optimal experimental conditions, the maximum adsorption capacity of Cr(VI) was 243.9 mg g −1 on Form-UiO-66, and 151.52 mg g −1 on Ac-UiO-66, which was far higher than on the reported unmodified UiO-66 (36.4 mg g −1 ). The results of pH testing, zeta potential, and X-ray photoelectron spectroscopy analysis indicate that Cr(VI) ions were fixed to adsorbent surfaces via electrostatic adsorption. Acid-modified UiO-66 increased the surface active site via the increase in its specific surface area to enhance adsorption capacity of Cr(VI). These results indicated that both the surface charge and specific surface area of the adsorbent primarily determined the Cr(VI) adsorption capacity. Acid modified UiO-66 exhibited enhanced adsorption capacity, stability, and regeneration, compared to traditional adsorbents, and these results provide new insights into adsorption by MOFs.
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
JOURNAL OF CATALYSIS
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2022
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IF 8.047
Xiaodong Zhang,Fukun Bi,Zhenyuan Zhao,Yang Yang,Yintao Li,Liang Song,Ning Liu,Jingcheng Xu,Lifeng Cui
Supported single-atoms and sub-nanometre clusters have exhibited superb catalytic performance toward many reactions. However, inactivation of single-atom or cluster catalysts in complex reactive conditions poses major challenge for their practical application. Herein, we demonstrate that the prepared Pd-UiO-66 with ultra-low Pd loading (0.05 wt%) contains three robust active Pd species, (isolated Pd atom (Pd 1 ), sub-nanometre Pd clusters (Pd c ) and Pd nanoparticles (Pd n )) and presents superb activity for toluene oxidation and water resistance (10.0 vol%). Experiments and theoretical calculations firstly confirm that consecutive H 2 -O 2 and reaction gas treatment (1000 ppm toluene in 20 vol.%O 2 /Ar) induce residual N species from solvent N, N-dimethylformamide to enter UiO-66 skeleton forming Pd 1 -N 1 structures. DFT calculations reveal that the synergistic effect of Pd species (namely, the enhanced activation of O 2 and H 2 O by Pd 1 and the improved adsorption of toluene by Pd c and Pd n ) is the main factor for the excellent activity of Pd-U-H-O-reused catalyst.
研究领域:
催化化学
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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
INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
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IF 3.8
Linzhi Zhai,Xin Zheng,Mengqi Liu,Xinru Wang,Wenli Li,Xiufang Zhu,Aihua Yuan,Yusong Xu,Peng Song
Zr-based metal–organic frameworks (MOFs), especially the UiO-66 family, present a huge application potential for the sorptive eliminations of heavy metal ions, still most of the studies often focus on only one type of adsorbent, thus lacking in some in-depth comparisons on the microstructure produced by the organic ligands. Herein, three kinds of Zr-based MOFs (UiO-66, UiO-66-(OH) 2 , and UiO-66-NH 2 ) are prepared, and their adsorption capacities for Ni 2+ , Fe 3+ and Cr 6+ are systematically investigated and compared. Results suggest that, due to a higher specific surface area of 1569.2 m 2 /g and a larger pore volume of 0.61 cm 3 g −1 , the UiO-66 depicts a better adsorption performance for Ni 2+ and Fe 3+ with larger capacities of 6.8 and 14.1 mg g −1 , respectively. The UiO-66-(OH) 2 presents a specific surface area of 785.5 m 2 /g, which is a little lower than UiO-66 and UiO-66-NH 2 , but shows the maximum adsorption capacity of 39.0 mg g −1 for Cr 6+ , obviously surpassing two other counterparts. In addition, for a multi-ion aqueous solution, UiO-66-(OH) 2 still has an excellent Cr 6+ /Ni 2+ adsorption selectivity of 21.7. The adsorption isotherm of Cr 6+ belongs to monomolecular layer Langmuir model, further verifying –OH 2 + of the UiO-66-(OH) 2 surface acted as the chemical adsorption sites and attracted electronegative Cr 6+ -containing ions. This study dramatically highlights the importance of the organic ligands for MOFs sorbents, which may facilitate achieving their large-scale applications in wastewater treatment.
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
CRYSTAL GROWTH & DESIGN
·
2021
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IF 4.076
Xiaoyu Yang,Zhen Li,Shaokun Tang
Hierarchically porous metal–organic frameworks (MOFs) not only inherit the merits of MOFs such as high porosity, but they also possess distinct properties such as a broader pore size range and thus more rapid mass transport. Simple, controllable synthesis of hollow or mesoporous structures with tailored pore features and more metal sites is desired and remains challenging. Herein, we demonstrate a facile strategy for fabricating hollow/mesoporous UiO-66 through a designed defect density and subsequent etching process. The strategy relies on the construction of an inhomogeneous nanoarchitecture in which the addition of water in UiO-66 synthesis can facilitate the formation of linker defects by promoting the explosive nucleation of UiO-66 and acetic acid deprotonation, and the more defective core will be selectively etched by sodium hydroxide. The morphology, size, pore structure, and metal sites can be exquisitely designed by rationally adjusting the water dosage and etching conditions. Markedly, UiO-66 with larger mesopores contributes to excellent glyphosate adsorption capacity, and the hollow UiO-66 catalyst with more active metal sites exhibits superior performance in the [3 + 3] cycloaddition reaction.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Dawei Lan,Huiwen Zhu,Jianwen Zhang,Chengrui Xie,Fan Wang,Yueying Zheng,Zeyu Guo,Mengxia Xu,Tao Wu
In this research, a novel composite of typical Zr-based metal–organic frameworks (UiO-66) with porous graphitic carbon nitride (g-C 3 N 4 ) was prepared by an in-situ preparation method. The g-C 3 N 4 /UiO-66 nanohybrids (CNU-0.5chieved almost 100 % efficiency in the degradation of RhB (60 mg/L, 100 mL) within 70 min under visible light, which was 6.46 and 10.56 times faster than that of pure g-C 3 N 4 and UiO-66, respectively. The improved photocatalytic properties were attributed to the large surface area, enhanced optical adsorption ability and the creation of heterojunction between g-C 3 N 4 and UiO-66. The formation of the heterojunction structure enhanced the photoelectron transfer efficiency and reduced the recombination of electron/hole pairs. Furthermore, the trapping experiments showed that •O 2 – , h + and •OH were the active species in the photodegradation process, with •O 2 – playing a dominant role. This study offers valuable insights into the preparation of MOF-based photocatalysts with exceptional effectiveness for the removal of contaminants in wastewater treatment.
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
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Shanqiu Liu,Enze Yu,Wei Cui,Taotao Ge,Qing Liu,Yu Zhong,Ping Li,Jie Yu,Jingguo Li
Nanocellular polymer foams are highly valued for their light weight, high strength, and unique nanostructures, offering significant potential for diverse applications. However, their fabrication and practical use are constrained by the low cell nucleation efficiency and the necessity for extremely high-pressure foaming processes. In this work, we successfully fabricated polymethyl methacrylate (PMMA) nanocellular foam featuring a cell density on the order of 1013 cells cm–3 at a relatively low foaming pressure of 6.0 MPa. This accomplishment was achieved through the use of UiO-66-X nanoparticles as nucleation facilitators, which exhibited a high nucleation efficiency of 1.94. Four distinct UiO-66-X nanoparticles, each adorned with different functional groups, were synthesized and proven to act as efficacious nucleators for PMMA nanofoams. The successful synthesis of UiO-66-X nanoparticles and the integration of functional groups were corroborated through Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). The cell dimensions and density of the PMMA nanocellual foam were characterized via SEM analyses. Our findings revealed that the incorporation of UiO-66-X nanoparticles dramatically minimized the cell size of the PMMA foam, thereby attaining an elevated cell density. This enhancement is attributed to a reduction in the free energy for cell nucleation within nanocavities situated at the matrix–nucleator interface. Consequently, the meticulous design of high-performance nucleating particles and the judicious selection of foam matrix constituents emerge as pivotal strategies in the quest for polymer cellular materials exhibiting nanoscale cell dimensions. These insights significantly advance the fabrication of polymer foams with enhanced thermal insulation properties and have broad implications for the realm of honeycomb materials science. By optimizing nucleation mechanisms and material combinations, this work paves the way for the development of advanced cellular polymers tailored for applications where superior insulation or light weight yet robust structures are paramount.
研究领域:
材料科学
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高分子化学
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纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 22
·50519
·
IF 3.125
Wei Wang,Peng Zhang,Yaping Shi,Zhichao Zhang,Xin Xu,Ping Ding
The composite membrane with the advantages of high separation efficiency and wide application, has been widely concerned in the field of water purification and molecular separation. However, the common composite membrane cannot achieve continuity, or the grafting process is complex, which significantly hinders its further development. In this work, the in-situ polymerization of UiO-66/PVDF supramolecular flat membranes as the continuous and high-performance composite membrane can be easily synthesized using the supramolecular force, (such as, hydrogen bond, etc.). These supramolecular membranes exhibit good hydrophilic (61°) and anti-fouling performance for bovine serum albumin (BSA) solution with rejection rate 97.79% than the original membrane. Moreover, this membrane can achieve more MOF doping based on maintaining the membrane performance, which undoubtedly greatly improves its hydrophilicity and mechanical properties. In addition, we also characterized the porous microstructure of the UiO-66/PVDF supramolecular membrane to analyze the influence of different doping amounts on the membrane structure. This supramolecular membrane has the advantages of simple synthesis, good hydrophilicity and water separation performance, which provides a more convenient and effective way for the preparation of MOFs/polymer flat membrane, and also provides a new method and new idea for expanding the application of MOFs/polymer ultrafiltration membrane in water treatment.
研究领域:
材料科学
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环境工程
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分离技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）