JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Elvis Ikechukwu Nosike,Zhenqi Jiang,Lijing Miao,Ozioma Udochukwu Akakuru,Bo Yuan,Shasha Wu,Yuenan Zhang,Yujie Zhang,Aiguo Wu
This research reports a new mercury adsorbent in which Fe 3 O 4 as a core was embedded into the shell of ZIF-90 in a one-pot synthesis and the subsequent post synthesis modification (PSM) of its surface with cysteine covalently, via a Schiff’s base reaction. Poly acrylic acid (PAA) was capped on the surface of nanoparticles to prevent agglomeration of the nanoparticles. In addition, −COOH groups of PAA coordinated with Zn 2+ of ZIF-90 and this provided the platform for ZIF-90 to grow on the nanoparticles forming the core-shell structure. Based on the strong interactions between the thiol groups on the adsorbent and mercury ions as elucidated by the XPS analysis, the as-synthesized adsorbent showed selectivity for Hg 2+ . The sorbent exhibited high adsorption capacity of 900 mg g −1 towards Hg 2+ as calculated at pH 4 and the adsorption kinetics followed pseudo-second-order kinetics model better. The Hg 2+ loaded adsorbent was easily regenerated and it maintained about 70 % efficiency after the third use. Low-cost, readily available and green materials, facile preparation, efficient removal and the breakthrough in three times recyclability give the novel ZIF-90 based hybrid nanoadsorbent wide prospects in the field of environmental remediation as a good adsorbent for Hg 2+ removal in wastewater.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Huiqi Gao,Haiyun Ma,Jinjin Cui,Xusheng Ge,Jiajun Tan,Jianzhong Xu
Organic phase change materials (PCMs) suffer from liquid-phase leakage, insufficient solar-thermal conversion capability, inherent flammability, which severely hinders their utilization. Herein, we design a three-dimensional hierarchically porous aerogel composite PCMs that integrates hollow phosphorus-doped ZIF-8 microshells (P-ZIF-8) with chitosan (CS) and MXene nanosheets for multifunctional synergy. Specifically, the hierarchically porous aerogel exhibits exceptional mechanical strength (withstanding >5000 times its own weight), endowing the composite PCMs with superior shape stability. This hierarchical framework, comprising aerogel network and hollow P-ZIF-8 microshells, provides a dual encapsulation effect and achieves outstanding encapsulation capability (97.6 %) and latent heat storage density (190.0 J/g), maintaining thermal durability and stability over 200 heating-cooling cycles. The MXene and P-ZIF-8 microshells synergistically enhance solar-thermal harvesting and energy conversion in composite PCMs, achieving a solar-thermal conversion efficiency of 98.3 % and outputting 442.1 mV and 69.1 mA in a solar-thermal-electric generator under 500 mW/cm 2 . The P-ZIF-8 microshells and MXene both provide physical barriers and catalytic charring effect, markedly enhancing the flame retardancy of the composite PCMs with peak heat release rate (pHRR) and total heat release (THR) significantly reduced by 31.1 % and 17.1 %, respectively. This work offers a versatile pathway for multifunctional PCMs that simultaneously meet the needs of thermal energy storage, solar harvesting and fire safety.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Mengshi Chen,Zihan Kang,Jingjing Ning,Ni Qin,Dinghua Bao
A novel method was established to create ZnO/ZIF-8 core/shell heterostructured film piezo-photocatalysts for highly efficient removal of pollutants from water. This method was inspired by distinctive pore structure of ZIF-8 and has the advantage of simple and quick synthesis. In this work, ZnO/ZIF-8 heterostructure thin films were created by growing ZIF-8 metal organic framework in-situ on inverse opal structure ZnO films, which also served as the porous template and zinc source of ZIF-8 simultaneously. Thus, the ZnO/ZIF-8 core/shell heterostructure is composed of ZnO core and ZIF-8 shell. The inverse opal structure enhances the process of light absorption, and the heterostructure is crucial for enhancing the carrier concentration. The ZnO/ZIF-8 heterostructure films exhibit significant degradation capacity towards Rhodamine B (RhB) and tetracycline (TC). Under UV light and ultrasound, the degradation efficiency of ZnO/ZIF-8 heterostructure is much higher than that of ZnO film and ZIF-8 film for RhB solution, indicating that the heterostructure films have a great potential for use in the field of water pollution prevention. This study not only presents an effective method for quickly creating heterostructures, but also demonstrates a path for improving the piezo-photocatalytic efficiency by manipulating the morphology and structure of ZnO/ZIF-8.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Jinhuai Hua,Rui Yao,Haonan Xu,Wenbin Zhao,Yuping Zhou,Hua Jin,Yanshuo Li
This study addresses the challenges of bio-butanol recovery by synergizing innovative module design with advanced mixed matrix membranes (MMMs) for enhanced pervaporation (PV) efficiency. ZIF-8 nanoparticles (14–120 nm) were integrated into a polymethylphenylsiloxane (PMPS) matrix to fabricate ZIF-8/PMPS MMMs on flat-sheet Al 2 O 3 supports, for efficient n-butanol separation via pervaporation. The optimized 14 nm-ZIF-8/PMPS MMMs (13.0 wt% loading) exhibited optimal performance, achieving a total flux of 925.86 g m −2 h −1 and a separation factor of 37.65 for 1 wt% n-butanol/water mixtures at 40 °C, enabling stable operation over 600 h. Key factors included the improved hydrophobicity, reduced interfacial voids, and enhanced surface roughness. A novel plate-and-frame module was engineered to address scalability challenges, increasing packing density from 5 to 55 m 2 /m 3 while mitigating concentration polarization and enhancing mass transfer under dynamic flow conditions. The module's compact design, combined with the mechanical robustness of Al 2 O 3 supports and the compatibility of ZIF-8/PMPS membranes, demonstrates industrial viability.
✓ 已验证
产品关联
DOI
高影响因子
RENEWABLE ENERGY
·
2021
·
IF 8.001
Liqing Zhao,Qinghe Wei,Lili Zhang,Yafei Zhao,Bing Zhang
Hydrogen release from catalytic hydrolysis of solid-state ammonia borane (AB) with efficient catalysts is recognized as a safe and compelling strategy to satisfy the ever-increasing demand for clean energy. As a result, exploring extraordinary efficient and inexpensive catalysts for hydrogen generation from AB is urgently desired for practical application. Herein, with the help of bimetallic zeolitic imidazole frameworks (ZnCo-ZIF) template strategy, we successfully decorate non-noble NiCo alloy nanoparticles on ZnCo-ZIF derived porous nitrogen-doped carbon (NC) as a high-efficiency catalyst (NiCo-NC) for hydrogen generation from hydrolysis of AB. Befitting from the abundance of nitrogen in porous carbon, the powerful synergistic effect between Ni and Co and the synergistic effect between the metallic alloy and the supporting substrate, the as-prepared NiCo-NC nano-catalyst displays distinguished catalytic performance with a high total turnover frequency (TOF) of 35.2 mol H 2 mo l metal - 1 mi n - 1 in 0.6 M NaOH medium at 298 K. Besides, this catalyst also exhibits good stability and magnetic separability . This work could provide a new insight for the construction of other bimetallic alloy anchoring on porous N-doped carbon carrier for further applications.
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yao Liu,Runzi Zhang,Xiaoyu Yang,Yi He,Xiao Yang
Herein, a dual-enhanced SERS biosensor has been developed for the detection of bisphenol S (BPS) based on silver nanoflowers coated zeolitic imidazolate-based metal-organic framework (AgNFs@ZIF-8) cooperate with host-guest recognition amplification technology. The biosensor utilizes the molecularly imprinted polymer (MIP) and BPS aptamer chain (APT) as dual recognition element to achieve a significant increase in selectivity. In the presence of the target, the APT on AgNFs@ZIF-8@β-cyclodextrin(β-CD) specifically binds with BPS, which further recognized by MIP to form a sandwich structure. At this time, due to the large surface area, and stable Raman enhancement ability, AgNFs@ZIF-8@β-CD could not only provide multiple active “hot spots” as the surface-enhanced Raman scattering (SERS) enhanced substrate, but also specific capture large number of methylene blue (MB, SERS tag) through the host-guest recognition. Moreover, multiple host-guest recognition can be achieved by further addition of AgNFs@ZIF-8@β-CD and MB, which greatly improve the detection sensitivity. This SERS sensor, characterized by an extensive linear detection range from 1.00 × 10 −13 to 1.00 × 10 −6 M and an exceptionally low limit of detection (LOD) of 1.36 × 10 −14 M, has been effectively utilized for the detection of BPS in plastic pacifiers, receipts, and river water samples. As an extremely sensitive and highly specific analytical method for detecting BPS, this SERS-based method has promising applications in the fields of environmental monitoring and food safety.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qian Wang,Xinyuan Zheng,Meiling Ge,Rong Chen,Fangpei Ma,Jianming Pan,Fu Yang
Maintaining the long-term stability of flexible polymer-immobilized lipase remains a significant challenge in enzyme catalysis. The deformation of the polymer during the process often damages the lipase, severely limiting its practical application. In this work, we in situ constructed rigid Zeolitic Imidazolate Framework-8 (ZIF-8) in porous hydrophobic polymer PVIm as “rigid and flexible” composite PVIm/ZIF-8 through a self-assemble strategy. The implanted rigid ZIF-8 improves the network stability of the hydrophobic polymer PVIm. Additionally, it acts as a co-factor, leveraging defective Zn sites to immobilize lipase through bonding with its amino acid moieties. This approach represents a typical two-birds-with-one-stone strategy. The optimal biocatalyst CalA@PVIm/ZIF-8(0.3) affords the highest yield of biodiesel of 82 % with a TON of 136.6 g (biodiesel) /g (CalA) from waste cooking oil under 30 °C and 24 h. Compared to CalA@PVIm/ZIF-8(0.3), the TON of free CalA is only 25 % of that value. Compared to the ZIF-8-free CalA@PVIm, CalA@PVIm/ZIF-8(0.3) exhibits near 1.2 folds enhancement of performance, further unveiling the co-factor role of ZIF-8 in the reaction. More importantly, this incorporation of ZIF-8 makes the resulted CalA@PVIm/ZIF-8(0.3) afford at least 44 days operation period and retains 83 % original activity after 16 running recycles, superior to almost all the reported immobilized lipase researches, far outperforming that (24.1 % activity after 16 cycles) of CalA@PVIm. The wide flexibility in various biodiesel synthesis can be further demonstrated, affording the practical application value of developed catalyst.
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Yang Xu,Jinghuan Chen,Zhiping Ye,Jiade Wang
The investigation into the development of an active transition-metal oxide catalyst with controllable morphology for the degradation of volatile organic compounds (VOCs) is a subject of considerable importance and warrants further exploration. In this study, ZIF-67 was prepared and employed as a sacrificial template, with varying quantities of Cu ions incorporated to synthesize layered copper-cobalt double oxide (CuCo-LDO) featuring a modifiable surface state. A comprehensive characterization of the CuCo-LDO catalysts was conducted, encompassing structural properties, morphology, surface chemical state, and redox properties, utilizing a range of analytical techniques. Subsequent evaluations included testing the catalytic activity for toluene oxidation and assessing stability performance. The results revealed that differing Cu contents played a pivotal role in inducing changes in the morphology and structure of CuCo-LDO, thereby significantly influencing its oxidation activity towards toluene. Notably, the flower-like structure of 3CuCo-LDO (Cu% = 20.14 wt.%) exhibited outstanding toluene oxidation activity attributable to its unique structure and composition. This research contributes novel insights to the design of highs-performance catalysts targeting volatile organic compounds.
✓ 已验证
DOI
高影响因子
Journal of Industrial Textiles
·
2020
·
IF 2.01
Hongbin Li,Wenying Shi,Qiyun Du,Shoufa Huang,Haixia Zhang,Rong Zhou,Xiaohong Qin
Although membrane distillation (MD) technology has the outstanding advantages of almost 100% solute retention and mild operation conditions, its further development is limited by low permeate flux. In order to solve the problem, the improvement of membrane hydrophobicity becomes one of the effective solutions. In this study, a loose and porous hydrophobic zeolitic imidazolate frameworks-71 (ZIF-71)/polyvinylidene fluoride (PVDF) coating layer was composited on the outside surface of PVDF hollow fiber support membrane by the dilute solution coating to enhance membrane hydrophobicity. The prepared hollow fiber composite (HFC) membranes were employed to remove high concentration Congo red (CR) through VMD. The effects of different operation conditions including the dye concentration, feed temperature, vacuum pressure and feed flow rate on CR rejection and permeate water flux were investigated. In the variation range of operating conditions, all the CR rejection of the PVDF HFC membranes shows a slight change and remains above 99.9%. Under the optimal operation conditions including dye concentration 600 mg·L−1, vacuum pressure 31.325 kPa, feed temperature 60°C and feed flow rate 50 L·h−1, HFC membrane exhibit a permeate water flux of 13.15 kg·m−2·h−1. HFC membrane suffers dye fouling during the continuous dye filtration for 100 h. The fouling mechanism was proposed and a combined cleaning way including forward washing, back flushing and chemical desorption has been proved to be effective in recovering membrane water flux.
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yinxiao Zhang,Yanhui Li,Yan He,Jie Zhang,Xinxin Wang,Lianwei Yin,Qiuju Du,Xinxin Pi,Botong Chen,Yichen Li,Haitong Zhou
Adsorption, as a widely used water treatment method, has gradually revealed many drawbacks. Advanced oxidation processes, as emerging water treatment technologies, address some of the limitations of adsorption. However, designing bimetallic catalysts that are easy to synthesize and prevent metal ion leaching is crucial for activating peroxymonosulfate (PMS). To address these issues, this study designs a biochar reactor structure made by simple treatment and composite formation using wood as the base material. Biochar serves as an adsorbent to concentrate PMS and pollutants while preventing metal leaching. Additionally, Co Cu nitrogen-doped graphite carbon derived from metal-organic frameworks (MOFs) is encapsulated within the structure to efficiently activate PMS. The system achieved 100 % methylene blue degradation within one minute. Even after five cycles, it maintained a 95 % removal rate and exhibited excellent degradation performance across a wide pH range, proving its practical applicability. Furthermore, the synergistic pathway and transfer channels involved in adsorption-PMS activation were elucidated through various characterizations to reveal the underlying mechanism. This study aims to provide a novel material with adsorption and catalytic capabilities for the removal of organic pollutants through a simple and easily scalable synthesis method.
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2026
·
IF 9.1
Shaorui Qi,Lei Sun,Fansheng Meng,Guimei Shi,Yunlong Sun,Bo Jiang,Junbo Li,Yukihiro Ozaki,Wei Ji
Abnormal lactic acid (LA) enantiomeric excess (ee) in biofluids is closely associated with various intestinal diseases. Here, we report a chiral-label-free nonplasmonic surface-enhanced Raman scattering (SERS) platform using a ZIF-8/ZnS heterojunction that enables direct quantification of LA enantiomers and their ee values in raw human urine through a charge-transfer-driven chiral recognition mechanism. Our findings indicate that an enantioselective hydrogen bonding between 4-mercaptopyridine (4-MPy) probes and LA enantiomers induces differential charge-transfer effects within the ZIF-8/ZnS@4-MPy system, evidenced by the selective enhancement of specific vibrational modes in the SERS spectra of 4-MPy and enantiomer-specific changes in the fluorescence lifetime of ZnS. This innovative system integrates signal amplification and stereoselectivity without the use of noble metals or chiral modifiers, overcoming critical limitations associated with the complexity of preparing chiral plasmonic substrates. The platform achieves ultrasensitive detection limits (10 nM), linear response to ee values (R2 = 0.98), high measurement precision (RSD < 8.28%, n = 20), long-term stability (28-day), and clinical-grade accuracy against enzymatic assays (RMSEP = 1.97). This work presents an efficient, noninvasive method for the analysis of chiral metabolites in urine, while establishing a novel direction for plasmon-free SERS chiral sensing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Yongshi Li,Peng Shan,Fuyou Yu,Hui Li,Lincai Peng
An environmental-friendly composite films containing waste fish scale-derived gelatin (FSG), sodium alginate (SA) and carvacrol loaded ZIF-8 (CV@ZIF-8) nanoparticles were designed and fabricated to develop active food packaging materials capable of sustained antibacterial activity. The microstructure and physicochemical properties of the FSG/SA/CV@ZIF-8 composite films were investigated. The incorporation of CV@ZIF-8 into FSG/SA matrix significantly enhanced the UV-light blocking and the elongation at break, improved water resistance and reduced water vapor permeability, and improved the thermal stability of composite film. The FSG/SA/CV@ZIF-8 film not only exhibited strong antioxidant activity with DPPH radical scavenging rate of 92.35 %, but also showed the satisfactory and long-acting antibacterial ability against E. coli and S. aureus due to slow release of CV from composite film. Strawberry preservation experiment revealed that FSG/SA/CV@ZIF-8 film decelerated the texture deterioration and retarded the growth of spoilage microorganism, resulting in the prolonged shelf-life of 8 days under ambient condition, indicating its promising application prospect in food preservation packaging.
✓ 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）