JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Liang Chu,Zhaokun Wang,Teng Zhao,Mu Yang,Ge Wang
Metal-organic frameworks (MOFs) as host-guest catalyst in oxidative desulfurization (ODS) face challenges due to limited access to active sites through their microporosity. Herein, hierarchical porous Ce-UiO-66 (HCU) was synthesized through a templating method in an aqueous environment to enhance host accessibility; phosphotungstic acid (PW) was uniformly loaded within the mesopores of HCU via post-impregnation; Ce sites were exposed by selective removing the coordinated acetate from the HCU with the acid post-treatment, these synergistically optimized the catalytic potential of the composite. The resulting HCU@5PW-H demonstrates outstanding desulfurization performance (1000 ppm sulfur removal) within 16 minutes under mild conditions (40 °C, O/S molar ratio = 5) and maintains high efficiency over at least eight cycles. The catalytic mechanism involves the decomposition of H 2 O 2 to reactive oxygen species (ROS) and the formation of W VI -peroxo intermediates that determine the ODS activity. This synergistic mechanism offers a promising strategy to enhance the oxidation potential of hierarchical porous MOF-based host-guest catalysts under mild conditions.
研究领域:
材料科学
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催化化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Zhixiang Xu,Dongshan Chen,Xingyu Duan,Yuning Chen,Caiqing Li,Siyuan Li,Yitao Ma,Bin Huang,Xuejun Pan
Dissolved inorganic and organic phosphorus is a major factor in triggering the eutrophication of water bodies. At present, a novel Zr 4+ cross-linked sodium alginate encapsulated in Ce-UIO-66 microspheres (Zr-SA/Ce-UIO-66) was prepared and systematically characterized. Its ability for capture of phosphate and glyphosate in their single and binary systems has been investigated comprehensively. Results showed that Zr-SA/Ce-UIO-66 exhibits excellent phosphate adsorption, achieving 92 % removal and a maximum adsorption capacity of 125 mg P/g at 313 K. Diversified mechanisms, including electrostatic attraction, ligand exchange and hydrogen bonding, have cooperatively participated in phosphate removal. Interestingly, in phosphate and glyphosate mixed solutions, the presence of phosphate significantly enhanced the removal of glyphosate for the formation of complexes between phosphate ions and the adsorbent. And that was similar to the presence of glyphosate in phosphate adsorption. Simulated wastewater experiments demonstrated the adsorbent’s practical application in water contaminated with both organic phosphorus and glyphosate composites and its potential for recycling and reuse.
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 ENGINEERING JOURNAL
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2022
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IF 16.744
Lan Ding,Fenghua Bai,Burenbayaer Borjigin,Yuning Li,Huiqin Li,Xiaojing Wang
Solar-energy-driven CO 2 conversion into valuable chemical fuels holds great renewable potential. However, most photocatalysts' weak CO 2 adsorption limits more artificial photosynthesis for further utilization. Herein, we present an in situ assembling approach to produce stable Cs 2 AgBiBr 6 /Ce-UiO-66-H composite, in which a tight contact interface between the two participated components was constructed. Benefiting from the photocatalytic properties and high adsorption capacity for CO 2 , the optimized 20Cs 2 AgBiBr 6 /Ce-UiO-66-H adsorption-photocatalyst exhibits outstanding performance for reductive CO 2 deoxygenation with considerable CO generation rate (309.01 μmol g −1 h −1 ) under simulated solar light irradiation with 300 W Xe lamp, which is about 2.1 and 2.7 times than that of pure Cs 2 AgBiBr 6 and Ce-UiO-66-H, respectively. The excellent catalytic conversion of CO 2 is ascribed to the effective solar harvest and quickly photo-excited carriers’ separation in such assembled architecture. Importantly, due to the in-situ synthesis, Cs 2 AgBiBr 6 QDs are intercalated in the Ce-UiO-66-H frameworks and it could lead to improved stability and induce abundant oxygen vacancies in Cs 2 AgBiBr 6 /Ce-UiO-66-H, which can maintain unchangeable CO 2 conversion rate under wet air with consecutive ten hours of the recycling test. In this work, the combining metal–organic frameworks and lead-free halide perovskite provide great potential for artificial photocatalytic CO 2 -to-CO conversion under a mild gas–solid reaction condition via utilizing solar energy.
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
CARBOHYDRATE POLYMERS
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2022
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IF 10.723
Zhi Chen,Zhi-Bo Zhang,Jun Zeng,Zhi-Jie Zhang,Shan Ma,Cong-Ming Tang,Jun-Qiang Xu
In this work, a polyethyleneimine-modified chitosan/Ce-UIO-66 composite hydrogel (PEI-CS/Ce-UIO-66) was prepared using the ex-situ blend method. The synthesized composite hydrogel was characterized by SEM, EDS , XRD, FTIR, BET, XPS, and TG techniques, while the zeta potential was recorded for sample analysis. The adsorbent performance was studied by conducting adsorption experiments using methyl orange (MO), which showed that PEI-CS/Ce-UIO-66 exhibited excellent MO adsorption properties (900.5 ± 19.09 mg/g). The adsorption kinetics of PEI-CS/Ce-UIO-66 could be explained by the pseudo-second-order kinetic model , and its isothermal adsorption followed the Langmuir model. Thermodynamics showed that the adsorption was spontaneous and exothermic at low temperatures. MO could interact with PEI-CS/Ce-UIO-66 via electrostatic interaction , π–π stacking, and hydrogen bonding . The results indicated that the PEI-CS/Ce-UIO-66 composite hydrogel could potentially be used for the adsorption of anionic dyes.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
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2024
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IF 5.3
Qingmei Qiao,Yunlan Xu,Dengjie Zhong,Xihong Ke,Yuqin Yang,Hanlu Zeng
In order to enhance the carrier separation efficiency and redox ability of photoanode, a dual Z-scheme heterojunction Ce-UiO-66/g-C 3 N 4 /Bi 2 WO 6 /Ti photoanode was prepared and assembled with Cu cathode to form PFC. The characterization results show that Ce-UiO-66/g-C 3 N 4 /Bi 2 WO 6 uniformly distributed on the Ti substrate, with average crystallite size of 9.04 nm and average particle size of 33.05 nm, which provides sufficient reactive active sites for RhB degradation. The RhB degradation rate, P max , J sc , V oc and FF of the PFC were 90.9 % (90 min), 7.53 µW cm -2 , 0.152 mA cm -2 , 0.37 V and 0.134, respectively. The turnover frequency (TOF) for RhB degradation by the PFC reached 0.98 h -1 . Fermi energy level analysis shows that a double-Z heterojunction is formed between Bi 2 WO 6 and g-C 3 N 4 , and between Bi 2 WO 6 and Ce-UiO-66, which not only effectively separates photogenerated e - - h + , but also retains the high redox ability of the composite. Moreover, with the introduction of Ce-UiO-66, the composite photoanode has larger specific surface area and wider visible light absorption range. In addition, because of the built-in electric field, the photogenerated electrons can migrate to the surface of composite particles more easily and react with dissolved oxygen to generate more •O 2 - to participate in the degradation of RhB. This work provides a valuable reference for developing PFC photoanode with high efficiency and visible light response.
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
APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Fajie Hu,Rushuo Li,Danfeng Zhao,Xiubing Huang,Ge Wang
The hydrogenation of dicyclopentadiene (DCPD) to synthesize tetrahydrodicyclopentadiene (THDCPD) is one of the key processes for the preparation of high-energy–density fuels, and the development of low-temperature and high-activity Ni catalysts is still challenging. In this work, hierarchical porous (HP) Ce-UiO-66 loaded Ni nanoparticles (NPs) catalysts were prepared based on the soft template method and liquid-phase in situ reduction method. The introduction of mesopores into Ce-UiO-66 can effectively enhance the transfer and adsorption of the substrate, and Ni NPs act as the main active centers. Furthermore, the modulation of the electronic structure of Ni NPs and the promotion of Ce-Ni interaction were effectively achieved by changing the in-situ deposition conditions. With a low loading of 3 wt% Ni NPs, the prepared 3Ni/HP-UiO-66 catalysts could achieve the observed complete DCPD conversion and 100 % selectivity of THDCPD within 1 h and retained good cycling stability. The results demonstrated preferential adsorption and hydrogenation of the norbornene ring, confirming the reaction pathway of the 3Ni/HP-UiO-66 catalyst for the hydrogenation of DCPD. The present work provides a guidance for exploring and designing non-noble metal catalysts for the hydrogenation of olefins and aromatics.
研究领域:
催化化学
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材料科学
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能源化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2025
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IF 9.5
Fajie Hu,Danfeng Zhao,Rushuo Li,Yunqi Zhang,Tianyu Zhang,Xiubing Huang,Ge Wang
The hierarchical porous and chemical microenvironmental properties of Metal–Organic Frameworks (MOFs) have been emphasized in catalytic applications. In this work, after selectively removing ligands from frameworks of Ce-UiO-66 by monocarboxylic acid etching, they exhibit obvious mesoporous properties with essentially unchanged crystallinity. Distinguishing from other pore-making methods, the MOFs have abundant missing sites after etching, and Ni nanoparticles (NPs) can be efficiently anchored in the framework of defective Ce-UiO-66, resulting in the formation of Ce–O–Ni heterogeneous interfaces. The chemical environments of Ni NPs can be modulated through the Ce–O–Ni interfaces, and the metal–support interaction improves the charge densities between the active sites. The prepared catalysts showed high conversion and selectivity in the hydrogenation reaction of dicyclopentadiene, and also had good cycling performance. The present work provides new insights into the construction of hierarchical porous defective MOFs with abundant heterogeneous interfaces for hydrogenation reactions.
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Hao-Jia Qin,Shuai Zhao,Hua-Ping Gong,Zhi Yu,Yufeng Wang,De Zhang,Pei Liang
Antibiotic residue detection plays a key role in ensuring human health. However, rapid, reliable, and highly sensitive detection methods are still insufficient. To tackle this challenge, in this study, the Au@Ag/Ce-UIO-66, a nanocomposite material consisting of bimetallic gold core and silver shell (Au@Ag) introduced on the surface of Ce-UIO-66, was successfully synthesized. By meticulously regulating the exact concentration and volume of silver nitrate, we successfully generated an optimal matrix. This significantly enhanced the detection capability of the probe molecule CV to an impressive concentration of 10 −9 M, with a remarkably low relative standard deviation of 7.54 %. The matrix exhibits excellent surface-enhanced Raman scattering (SERS) performance and stability, reaching adsorption equilibrium within 30 min. Moreover, employing this substrate enables the detection of sulfadiazine at concentrations as minimal as 2.5 μg/L, significantly surpassing the standards set by the European Union. Notably, the Raman spectral signal of sulfadiazine maintains stability across various pH conditions at a concentration of 10 −5 M. Finally, the adsorption mechanism and enhancement mechanism between Au@Ag/Ce-UIO-66 and sulfadiazine were explored.
研究领域:
分析化学
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纳米技术
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环境科学
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药学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Dong Wang,Tinglue Zhang,Mohamed Gamal El-Din,Xuefen Wang
In this work, the 2-fluoroterephthalic acid with asymmetric structure and high electronegative F species was introduced in the assembly of Ce-UiO-66 catalysts to increase the defect density and enlarge pore structure for enhancement in removal efficiency of sulfamethoxazole. Owing to the strong coordination ability from high electronegative F species of 2-fluoroterephthalic acid with Ce-oxo nodes, the designed CUF exhibited improved interfacial properties (accelerated electron transfer rate, available active sites and enhanced interaction with PMS), which was favorable for the exploration and accessibility of active sites with sulfamethoxazole and PMS to decrease the adsorption barrier and accelerate PMS activation. As a result, the CUF catalysts exhibited higher adsorption capacity (173.4 mg/g) than that of CUH (117.8 mg/g), the enhanced degradation efficiency of sulfamethoxazole with a rate constant higher than 2.3 times CUH, good elimination (>95 %) of methylene blue, tetracycline and ibuprofen. In addition, the CUF/PMS system possessed satisfactory stability in wide solution pH, recycling and real water and good potential application in continuous wastewater treatment based on the designed dynamic catalytic reactor. This work provided deep insight into the design of catalysts with high adsorption performance and degradation efficiency based on the structure–activity relationship.
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
ACS Applied Materials & Interfaces
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2023
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IF 9.5
Wenqing Hou,Chen Chen,Diya Xie,Yiming Xu
Metal–organic frameworks (MOFs) as photocatalysts have received increasing attention. In this work, a dual metal-substituted UiO-66-NH2 (Ti/Ce-MOF) containing different Ti/Ce mole ratios (x = 0–2.46) has been prepared via post-synthetic exchange between Ce-UiO-66 and TiCl4, followed by amination. The solid had a high surface area (828–937 m2/g) and a large pore volume (0.451–0.507 m3/g). Under visible light, Ti/Ce-MOF showed x-dependent activity for H2O reduction and oxidation on a film electrode, respectively. However, such a change for H2 evolution in a Na2S/Na2SO3 aqueous solution was observed only after CdS loading. In combination with the photoluminescence and band parameters, we propose that the photoactivity of Ti/Ce-MOF for redox reaction is determined by its ability for electron transfer. Furthermore, there is an interfacial electron transfer from Ti/Ce-MOF to CdS and a hole transfer from CdS to Ti/Ce-MOF, respectively, significantly improving the efficiency of charge separation for redox reactions. This work offers a new insight that Ti substitution benefits the performance of Ce-based MOF.
研究领域:
材料科学
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化学
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纳米技术
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光化学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Xinyu Hu,Yao Zhang,Mingrong Lu,Min Yang,Jianmin Li,Zhengmei Wang,Guizhen Li,Hongbin Wang
In the present work, Ce-UiO-66, namely cerium-organic framework was prepared through rapid one-step solvothermal method, uncovering it potency to effectively get rid of tetracycline (TC) from an aqueous solution. The morphology and structure of Ce-UiO-66 materials were characterized by typical traditional methods such as FESEM, XRD , FTIR, and XPS. The process performance in terms of TC removal was investigated at different operating conditions. Specifically, when the dose, pH value, adsorption time, and temperature were 20 mg, 9, 180 min, and 25 ℃ respectively, the removal effect of TC was the best. The adsorption process of TC was described using the Freundlich model and the quasi second order model, respectively. The removal efficiency of TC by UiO-66 before modification was only 40.37%, and the adsorption amount was 44.38 mg⋅g −1 , while the removal efficiency of TC adsorption by Ce-UiO-66 could reach about 90% under the optimal adsorption conditions, and the maximum adsorption amount was 86.95 mg⋅g −1 . The data showed that Ce-UiO-66 exhibits good TC adsorption performance. And TC adsorption process was spontaneous and endothermic multi molecular layer chemical adsorption . Ce doping increased the quantity of active sites, and promoted the synergistic effects of electrostatic attraction, π-π conjugation, and hydrogen bonding between the adsorbent and TC, thus improving the adsorption effect of TC. As everyone knows that the application of UiO-66 in the adsorption field can be broadened by doping other metal ions , which prove that the metal skeleton adsorption material has broad development prospects in the next few years.
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
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Liyuan Wang,Lingli Dong,Liyuan Xie,Zhitao Wang,Linpo Li,Enbo Shangguan,Jing Li
Regulating metal nodes to innovate the metal–organic framework (MOF) structure is of great interest to boost the performance of MOFs-incorporated composite solid electrolytes. Herein, Ce4+ with a low-lying 4f orbital is selected as metal center to coordinate with organic ligand to prepare MOF of Ce-UiO-66. The unsaturated open metal sites and defected oxygen vacancies furnish Ce-UiO-66 with strengthened Lewis acidity, which promotes Ce-UiO-66 interacting effectively with both poly(ethylene oxide) (PEO) and Li salt anions. Accordingly, Ce-UiO-66 as additive fillers can be uniformly dispersed in PEO matrix to form an advanced composite solid-state electrolyte (Ce-UiO@PEO) with accelerated Li+ transport. The optimized Ce-UiO@PEO displays a boosted ionic conductivity of 4.20 × 10–4 S cm–1 and an improved Li+ transference number of 0.39 at 60 °C, which are highly comparable to those of other MOFs@PEO electrolytes. Combined with the mechanical and thermal stabilities, such a Ce-UiO@PEO electrolyte enables Li/Li symmetric and Li/LiFePO4 full cells with superior cycling stability and rate performance. The Ce-UiO@PEO electrolytes are of great potential to be applied in high-performance lithium metal batteries.
研究领域:
材料科学
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电化学
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能源存储与转换
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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）