SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Rongfeng Guan,Ze Liu,Changlei Huang,Jiacheng Liu,Changjian Zhou
Developing a bifunctional photocatalytic system that combines efficient hydrogen evolution and hydrogen peroxide generation is of great significance for achieving solar-driven water splitting and green oxidant synthesis. In this study, a cobalt phosphide (CoP) cocatalyst with metalloid conductivity and porous structure was prepared by phosphorizing ZIF-67, and then composited with MnCdS solid solution via a one-pot hydrothermal method, successfully constructing a MnCdS@ZIF/P (MCS@Z/P) Schottky junction photocatalyst with intimate interfacial contact. The Mn doping strategy effectively regulated the band structure of CdS, not only narrowing the bandgap from 2.27 eV to 2.17 eV but also shifting the valence band maximum upward, thereby significantly enhancing visible light absorption and hole oxidation potential. After contacting with high-work-function CoP, a strong built-in electric field is formed at the interface, efficient driving directional transfer of photogenerated electrons from MnCdS to CoP. Under visible light irradiation, the optimized MCS@10Z/P catalyst exhibits excellent photocatalytic activity for both H 2 evolution (42.33 mmol·g −1 ·h −1 ) and H 2 O 2 production (1951.09 μmol·g −1 ·h −1 in air) in two independent reaction systems. Mechanistic studies reveal that the introduction of CoP not only serves as an efficient electron transport medium, but also shifts the oxygen reduction pathway from an inefficient single-electron process to a highly efficient two-electron dominant pathway by optimizing the *OOH intermediate adsorption free energy. The Gibbs free energy(ΔG H ) of the optimal sample is reduced to 0.13 eV, which significantly reduces the reaction energy barrier. This work provides new insights into the design of efficient bifunctional Schottky junction photocatalysts based on MOF-derived materials.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Nasim Ullah,Raza Ullah,Muhammad Adnan,Muhammad Rashid,Muhammad Fayaz,Bing Yu,Hailin Cong
g -C 3 N 4 activated ZIF-67 impregnated composite hydrogel beads adsorbent was synthesized. • Brilliant green was used as modal adsorbate. • Effect of initial dye concentration, contact time, pH, and temperature were examined. • Composite hydrogel beads adsorbent show maximum adsorption capacity of 226 mg/g. • The composite hydrogel beads adsorbent followed Pseudo-first-order kinetics and Freundlich isotherm. This research work presents new composite hydrogel beads adsorbent designed to adsorb brilliant green (BG) dye from water. The Graphitic carbon nitride (g-C 3 N 4 ) was modified with ZIF-67 and further integrated into sodium alginate to prepared composite hydrogel beads (CHB) adsorbent. The (CHB) adsorbent were comprehensively characterized using a suite of analytical techniques, such as FT-IR, TGA, SEM, EDX, XPS and BET analysis. To determine the optimal conditions for brilliant green dye removal, batch trials were carried out across a range of pH values (2−11), Dose (0.005–0.04 g), BG dye concentrations (25–300 mg/L), time (15–300 min), and temperatures (25–40 °C) studies respectively. The BET study showed that the surface area of (CHB) adsorbent was 0.500 m 2 /g. The (CHB) adsorbent demonstrated a maximum adsorption capacity of 226.27 mg/g. Kinetic analysis indicated that the (CHB) adsorbent followed second-order kinetics. The isotherm study indicated that the Freundlich model provided the best fit for the equilibrium data. The removal of BG using CHB adsorbent indicated that ΔGᴼ ranged from −2.22 to −2.37 KJ/mol. However, the ΔHᴼ received results was 3.91 KJ/mol. The determination indicating the adsorption process was endothermic and takes place spontaneously has been verified by the thermodynamic study. The results from the regeneration experiments indicated that the BG dye adsorption successfully completed up to five adsorption-desorption cycles while retaining an efficiency of 82.7% throughout the entire process. This (CHB) adsorbent providing an efficient and environmentally friendly for wastewater treatment.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Guangyu Zhu,Juan Su,Chunxiao Yin,Huali Li,Yong Yao,Liuqin Zhang,Xiang Yao,Xiaohu Zhang,Fa-Qian Liu
Herein, zinc gluconate was used as zinc source to synthesize ZIF-7@ZnG nanoparticles (NPs), and modified with 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDS) to obtain ZIF-7@ZnG@PFDS superhydrophobic NPs. To improve the durability and wear resistance of superhydrophobic coating, epoxy resin (EP) was introduced as the connection layer to fabricate ZIF-7@ZnG@PFDS/EP superhydrophobic coating. The results show that the fabricated coating exhibits superior hydrophobicity (CA = 164°, SA = 3.7°) and manifests excellent performance in self-cleaning, anti-icing, anti-biofouling and anti-corrosion. It is worth mentioning that after 36 days of immersion in 3.5 wt% NaCl solution, the impedance modulus of the coating is three orders of magnitude higher than that of EP coating. The result of wire beam electrode (WEB) confirms that ZIF-7@ZnG@PFDS/EP coating has a self-healing property in the artificial damage area. Finally, the influence mechanism of ZIF-7@ZnG@PFDS nanoparticles on the corrosion process was discussed. We believe this work could provide a novel insight into the preparation and application of superhydrophobic coating based on MOFs material.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Hongyuan Wu,Mohib Ullah,Lin Jiang,Jue Wang,Baihe Sun,Jun Gao,He Lv,Zhuo Liu,Keying Shi
The two-dimensional (2D) g-C 3 N 4 nanosheets have been widely recognized for their great potential in gas sensing. However, the disadvantages brought by layer stacking of two-dimensional nanosheets also seriously affect their performance and application. In this paper, three-dimensional hydrangea-like Pd-ZIF-67/g-C 3 N 4 was prepared for the detection of nitrogen dioxide gas at room temperature via a simple hydrothermal method . The Pd-ZIF-67/g-C 3 N 4 gas sensor exhibited excellent sensing properties with highest sensing response (23.8–100 ppm), ultrafast response speed (0.5 s) and lowest limit of detection (10 ppb) at room temperature. Moreover, it also manifests excellent reversibility and durability, optimal stability and commendable selectivity towards NO 2 gas. This excellent performance is due to the three-dimensional spatial configuration, synergistic effect and catalytic action of Pd . In general, the constructed structure and the proposed design strategy have a certain promoting role in promoting the creation of high performance gas sensors with three-dimensional heterogeneous structures based on two-dimensional nanosheets .
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MICROCHEMICAL JOURNAL
·
2022
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IF 5.304
Zhijuan Wang,Ran Han,Lin Li,Jiaqing Sun,Jingying Yang,Mingfei Pan,Shuo Wang
A facile, ultra-sensitive and cost-effective electrochemical sensor was successfully prepared by combining metal–organic framework ZIF-8 with MWCNTs-COOH, which detecting of tert -butylhydroquinone (TBHQ) in edible oil and fried foods. The hydrothermally synthesized ZIF-8 material with microporous structure was demonstrated to have large specific surface area, and together with the MWCNTs-COOH with high electrical conductivity and catalytic properties, was used as a modified substrate for electrodes. Because of the synergistic effect between ZIF-8 and MWCNTs-COOH, the modified electrode exhibited significant electrocatalytic ability for TBHQ. Under the optimal experimental conditions, the ZIF-8/MWCNTs-COOH modified electrode obtained good linearity when the TBHQ concentration ranged from 0.01 to 25.0 μg mL −1 with the LOD (limit of detection) of 0.009 μg mL −1 (S/N = 3). Moreover, the constructed electrochemical sensor exhibits better anti-interference capability, reproducibility and stability, and can be used to monitor the content of TBHQ in oil and fried foods.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Yu Zhang,Hong Zheng,Pengyi Zhang,Qi Zuo,Baichao Zhang,Zhi Geng,Yanan Yang,Xueying Ren
The functionalization of metal–organic frameworks (MOFs) has been considered an effective strategy for promoting heavy metals removal from water. Therefore, a novel post coordination modulation method was systematically studied to synthesize ZIF-8 functionalized by 2,5-Dimercapto-1,3,4-thiadiazole (Post-ZIF-8-DMTD) for trace heavy metals removal from drinking water. The effects of addition time and addition amount of DMTD on the structure and adsorption performance of Post-ZIF-8-DMTD were investigated. It was found that addition time of DMTD had minor impact, while addition amount of DMTD had great impact, appropriate DMTD addition amount (375 mg) could not only provide sufficient active sites but also avoid self-polymerization of DMTD. Post-ZIF-8-DMTD exhibited a more regular structure than Before-ZIF-8-DMTD synthesized by direct coordination of mim and DMTD with Zn 2+ , and had faster adsorption rate and deeper purification capability for trace Pb(II). Post-ZIF-8-DMTD also exhibited good stability, wide suitable pH range, high maximum adsorption capacity (4.34 mg/g) that met WHO effluent Pb(II) concentration standard and excellent capture capacity for many trace heavy metals in tap water, and could be regenerated effectively with thiourea solution. The post coordination modulation method provides a novel and efficient strategy for the functionalization of MOFs, and Post-ZIF-8-DMTD has excellent application prospects in drinking water purification.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Xi Li,Shiwen Wang,Pei Chen,Baokang Xu,Xiao Zhang,Yanhua Xu,Ru Zhou,Yang Yu,Huaili Zheng,Peng Yu,Yongjun Sun
Co–Zn–N–C catalyst (MCZC) with neighboring Co and Zn pairs anchored on hollow carbon nitride was constructed by the direct etching of zeolitic imidazolate frameworks assembled with Co and Zn. Adequate characterizations and density functional theory (DFT) studies confirmed the successful construction of non-bonding Co and Zn pairs with enhanced electron transfer on Co sites by adjacent Zn sites. Based on the synergy of adjacent Co and Zn atom pairs, the MCZC/Perxymosulfate (PMS) system achieved 99.6% Tetracycline (TC) degradation in 24 min with a mineralization rate of 55.8% and PMS decomposition efficiency of 73.1%. DFT calculation based on the Fukui index identified the sites susceptible to attack by the active species. TC degradation pathways could be inferred, and reduced toxicity of intermediates was observed. This work provides new insights into the design of MOF-derived bimetallic catalysts and the importance of the interaction between adjacent metal active sites to catalytic performance.
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MICROCHIMICA ACTA
·
2022
·Vol. 190
·期 1
·1-11
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IF 6.408
Duan Nuo,He Chuxian,Lin Xianfeng,Yu Wenyan,Wang Zhouping,Yuan Wenbo,Wu Shijia
Zeolitic imidazolate framework (ZIF-8) base-aptamer “gate-lock” biomaterial probes have been synthesized for monitoring intracellular deoxynivalenol (DON) and cytochrome c (cyt c) levels. The aptamer and organic fluorescent dye were regarded as a recognition element and a sensing element, respectively. In the presence of DON, the aptamers of DON and cyt c were specifically bound with the DON and induced cyt c, leading to the dissociation of aptamers from the porous surface of the probes. The gate was subsequently opened to release methylene blue (MB) and Rhodamine 6G (Rh6G), and their fluorescence (emission of MB at 700 nm and Rh6G at 550 nm) significantly recovered within 6 h. Cell imaging successfully monitored the exposure of DON and the biological process of cyt c discharge triggered by the activation of the DON-induced apoptosis pathway. In addition, the response between DON and cyt c was observed during the apoptosis process, which is of high significance for the comprehensive and systematic development of mycotoxins cytotoxicity. Graphical abstract
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PubMed
高影响因子
ChemNanoMat
·
2023
·Vol. 10
·期 3
·e202300499
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IF 3.8
Xiaozhu Zhao,Zongxin Li,Fengchuan Guo,Naipu He,Wen Li,Xuerui Zhao
Graphical The morphology of micelles in surfactant-free emulsion was regulated by adjusting the oil-water ratio and concentration of amphiphilic copolymer. Subsequently, polymer micelles served as templates to direct the assembly of ZIF-8 crystals in the surfactant-free emulsion to fabricate polymer/ZIF-8 composite materials (ZIF-8@CSP) with various structures. An amphiphilic chitosan-g-poly N-(3-dimethylaminopropyl) methacrylamide (CS-g-PDMAPMA, CSP) was proposed and synthesized by reversible addition-fragmentation chain transfer polymerization (RAFT), and further employed as emulsifier to construct a surfactant-free emulsion. The morphology of micelles in surfactant-free emulsion was regulated by adjusting the oil-water ratio and concentration of amphiphilic copolymer. Subsequently, polymer micelles served as templates to direct the assembly of ZIF-8 crystals in the surfactant-free emulsion to fabricate polymer/ZIF-8 composite materials (ZIF-8@CSP) with various structures. Specifically, ZIF-8@CSP with various architectures such as spheres, rods, cubes, leaf-shaped flakes, cross-flowers and wrinkled cubes were obtained by varying the concentration of CSP, the addition sequence of ZIF-8 precursors and the ratio of oil-water.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
De Zhang,Mingxin He,Chongyang Qin,Zhuoqun Wu,Minhui Cao,Dejiang Ni,Zhi Yu,Pei Liang
The unreasonable spraying and random migration of acetamiprid may cause pollution of crops, soil and water resources in the environment, resulting in threatening ecosystem and human health. However, the monitoring of acetamiprid using mass spectrum in the environment encounters challenges due to high-cost instruments and complex processing time. Herein, we fabricated a rapid and reliable SERS method based on Ag@ZIF-8@Au platforms for tracing acetamiprid residues in the environment. In this method, a MOF material named ZIF-8 is coated with silver nanoparticles and distributed internally between AgNPs and AuNPs to enhance Raman signal, which can enrich pesticide molecules into the hotspots area provided by noble material and helps avoid the oxidation of silver nanoparticles. High sensitivity (LOD of 9.027 × 10 -10 M for acetamiprid, and SERS enhancement factor of 4.3 × 10 7 ), excellent reproducibility (6.496% or 7.198% RSD for 30 random points) and superior stability (3.127% RSD for 6 weeks) were achieved using the proposed method. Acetamiprid with concentrations from 10 -4 to 10 -9 M were successfully detected by SERS method. Furthermore, the linear detection models of acetamiprid in different environment matrices (lake water, tea leaves, tea garden soil, oranges and oranges orchard soil) were established and all the correlation coefficient (R 2 ) were higher than or equal to 95%, indicating the excellent adaptability of Ag@ZIF-8@Au platform in environment. The randomly spiked concentrations of acetamiprid were also tested with good recovery values and low relative error values, further confirming the reliability of the detection method.
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Reaction Chemistry & Engineering
·
2023
·Vol. 8
·期 12
·3124-3132
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IF 3.9
Chenhua Shu,Min Zhao,Hua Cheng,Yajie Deng,Pierre Stiernet,Niklas Hedin,Jiayin Yuan
A type-III porous liquid based on zeolitic imidazolate framework-8 (ZIF-8) and an ionic liquid trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl)imide ([THTDP][BTI]) was synthesized and used for the desulfurization of model diesel. The desulfurization effect by ZIF-8/[THTDP][BTI] combined both the adsorptive desulfurization by ZIF-8 and the extraction desulfurization by [THTDP][BTI]. The removal of the three chosen aromatic organic sulfides by the ZIF-8/[THTDP][BTI] porous liquid followed the order of dibenzothiophene (73.1%) > benzothiophene (70.0%) > thiophene (61.5%). It was further found that deep desulfurization could be realized by ZIF-8/[THTDP][BTI] through triple desulfurization cycles and ZIF-8/[THTDP][BTI] can be regenerated readily. The desulfurization mechanism was explored further in detail by conformation search and density functional theory calculations. Calculations supported that the large molecular volume of [THTDP][BTI] excluded itself from the cavities of ZIF-8, making the pores of ZIF-8 in the porous liquid unoccupied and accessible by other guest species, here the studied organic sulfides. These calculations indicate that the van der Waals interactions were the main interactions between ZIF-8/[THTDP][BTI] and specifically benzothiophene. This work supports that the porous liquid ZIF-8/[THTDP][BTI] could potentially be used for desulfurization of diesel in industry.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jialu Pan,Lin Che,Tong Wei,Yanqing Cong,Shi-Wen Lv
It is of great significance to rationally regulate the activation mechanism of peroxymonosulfate for wastewater treatment. Herein, for the first time, a newly-constructed NiCo 2 O 4 @ZIF-67 core–shell nanocage was employed as a mediator for effective removal of tetracycline (TC). As-prepared NiCo 2 O 4 @ZIF-67 displayed reduced charge transfer resistance and enhanced electron transfer rate. Importantly, more than 99.58% of TC can be degraded within 30 min by developed NiCo 2 O 4 @ZIF-67/PMS system, and the removal efficiency of TOC was as high as 72.81%. Moreover, antimicrobial tests revealed the low toxicity or non-toxic of degradation products. More interestingly, after coating ZIF-67 film on the surface of NiCo 2 O 4 , the electron transfer process among PMS, contaminant and catalyst was enhanced. The radical and nonradical pathways worked in coordination each other and achieved the rapid removal of various organic pollutants. The ZIF-67-derived NiCo 2 O 4 core dominated the generation of reactive oxygen species, while the coated ZIF-67 shell induced the electron transfer from TC to PMS. Besides, the introduction of ZIF-67 not only improved the anti-interference for inorganic anions, but also boosted the water stability, thereby resulting in that NiCo 2 O 4 @ZIF-67 still remained great catalytic performance after repeated use for several times. In short, current work shared a promising approach for wastewater treatment.
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