Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·125095
·
IF 7.5
Zhifan Guo,Chen Wang,Hongwei Liu,Yujia Tong,Kaili Zhao,Xiaohui Ju,Weixing Li
Co-solvent method to precisely reduce the polarity for preparing uniform ZIF-67 nanoparticles. • 17-FAS promotes interfacial compatibility between ZIF-67 and PVDF and increases wetting resistance. • High water flux of 24.7 kg·m −2 ·h −1 with only 3.01% decline rate after 72 h DCMD. Membrane distillation (MD) offers distinct advantages for wastewater treatment, including low operational demands and near-perfect solute rejection. However, its long-term application is severely hindered by issues such as material detachment, membrane deformation, and wetting. Here, a co-solvent-assisted synthesis strategy with n-heptane and methanol was proposed to prepare uniform ZIF-67 nanoparticles. By optimizing the fiber diameter, robust integration of ZIF-67 with the PVDF matrix is achieved. Furthermore, the incorporation of 1 H,1 H,2 H,2H-perfluorodecyltriethoxysilane (17-FAS) significantly improves interfacial adhesion between ZIF-67 and PVDF, effectively preventing particle detachment and reinforcing wetting resistance during prolonged operation. The successful incorporation of ZIF-67 and 17-FAS was confirmed by FTIR and XPS analyses, and SEM and AFM observations revealed the micro-rough morphology of membrane surface. The enhanced mechanical properties and thermal stability of the composite membranes were verified by tensile testing and TGA. The developed ZIF-67@17-FAS/PVDF membrane exhibits a high water contact angle of 156.6° and the permeate flux of 24.7 kg·m −2 ·h −1 with 3.01% decline rate for 3.5 wt% NaCl solution within 72 h of direct contact membrane distillation (DCMD). Remarkably, under a high-salinity condition of 10 wt%, the flux decline rate is only 7.01%, demonstrating outstanding long-term stability. This work provides a promising strategy to overcome the key limitations of MD membranes through synergistic size control, structural optimization, and interfacial engineering. Download: Download high-res image (178KB) Download: Download full-size image
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ACS Applied Nano Materials
·
2023
·
IF 5.9
Shengyang Qi,Zixuan Niu,Weizhong Yuan
The rapid progress in technology has led to widespread adoption of electronic devices. However, this increased usage has brought about concerns regarding both environmental impact and human health. As a result, there is a growing demand for the development of intelligent devices that can address both electromagnetic interference (EMI) shielding and effective thermal management simultaneously. In this work, we introduce a simple approach for the fabrication of flexible conductive phase change materials (FCPCMs). By combining hollow ZIF-67 (H-ZIF) nanoparticles with a high encapsulation efficiency alongside conductive carbon cloth, we found that the hollow nanoparticles provide excellent encapsulation capabilities. Unlike traditional PCMs, this FCPCM exhibits a unique ability to efficiently convert, store, and release heat energy when stimulated by both light and electricity. Furthermore, the distinctive composite structure of this material enables shape memory, allowing for an EMI shielding switch that responds to changes in temperature. This study not only contributes to the advancement of multifunctional flexible PCMs but also explores the convergence of thermal management and electromagnetic shielding, paving the way for further research and applications in this field.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ruixiang Wang,Huanhuan Dong,Xueyi Li,Li Zhou,Wenkun Zhu,Tao Chen
Semiconductor-based photocatalytic materials have been widely used in photoreduction uranium systems. However, semiconductor-based materials still have some problems such as difficult recovery, few adsorption sites, poor stability, and large bandgap width. Based on this, we constructed 3D porous konjac glucomannan-derived carbon-encapsulated carbon-doped ZnO carbon aerogels (KC@C-ZnO-X) for U(VI) adsorption-photoreduction based on the gelling properties of Konjac glucomannan (KGM) and the unique structure of ZIF-8. The KC@C-ZnO-1.5 achieved the U(VI) removal rate of 93.5 % in 200 mg/L U(VI) solution and greatly weakened the photocorrosion of ZnO. And then the KC@C-ZnO-1.5 continued to maintain an outstanding U(VI) removal rate of 92.9 % after five cycles. Further characterization tests found that the role of 3D KGM-derived carbon aerogel (KC) encapsulation improves the stability of ZnO and carbon doping reduces the band gap width of ZnO. The mechanistic study showed that KC as the “skeleton” encapsulating C-ZnO not only enabled the catalyst to be recycled but also enhanced the photostability of ZnO. The synergistic effect of the C-ZnO and KC promoted photogenerated charge separation and facilitated the generation of ·O 2 − , leading to the further formation of the stable (UO 3 ·NH 3 ·H 2 O) crystalline phase.
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ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Erwei Tan,Wenjie Peng,Qihou Li,Ding Wang,Xinhai Li,Jianguo Duan,Huajun Guo,Guochun Yan,Jiexi Wang,Zhixing Wang
Polyethylene oxide (PEO)-based electrolytes are considered to be promising for all-solid-state battery, benefiting from the superior flexibility, excellent processability and well compatibility. However, the low ionic conductivity at room temperature and poor stability under high voltage limit their further application. Herein, ZIF-8@PVDF-HFP/PEO (PPZ) solid electrolyte was successfully prepared by facial electrospinning process. On one side, the cooperation of PVDF-HFP and ZIF-8 was benefit to decrease the crystallization degree of PEO and thus promoted the Li + transfer. Moreover, the in-situ formed LiF layer derived from the decomposition of PVDF-HFP protected the electrolyte from contacting directly with the electrode, contributing to a stable electrode/electrolyte interface. The results demonstrated that the electrochemical stability and mechanical property of PPZ electrolyte were significantly improved when compared to the bare PEO electrolyte. The tensile strength increased from 0.5 to 6.7 MPa and the Li + transference number enlarged from 0.17 to 0.48. More importantly, the assembled LCO(LiCoO 2 )||PPZ||Li all-solid-state battery delivered a discharge specific capacity of 144.7 mAh g -1 at 0.2 C, nearly 1.6 times than that of the LCO||PEO||Li (90.7 mAh g -1 ). Besides that, the retention maintained at 86.3 % even after 200 cycles, manifesting a long-term cycling stability. This work provides a new idea for the practical application of PEO under high voltage.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xin Wang,Jihang Hu,Hao Guan,Xinjian Dai,Mingyue Wu,Xiaoqing Wang
High-performance catalytic filters with both high removal efficiency and high water flux are essentially demanded for organic wastewater purification but still remain a great challenge. Herein, taking full advantage of the well-aligned liquid transport channels of natural wood and the excellent catalytic activity of metal–organic frameworks (MOFs), we developed a high-efficiency wood-based catalytic filter (ZIF-67@wood) for continuous and highly efficient catalytic degradation of methylene blue (MB) in water. The wood scaffold was pretreated with a sodium hydroxide (NaOH) solution to create nucleation sites for in situ growth of ZIF-67 nanocrystals within the wood channels, which function as catalytic sites to activate peroxymonosulfate (PMS) to generate reactive radicals (·OH and SO 4 •− ) for MB degradation. As the MB solution flows through the catalytic filter, the abundant well-distributed vessel channels of natural wood serve as the primary pathways for rapid fluid transport and enhance the contact between organic contaminants and ZIF-67 nanocrystals. The obtained ZIF-67@wood catalytic filter demonstrated a high MB removal efficiency (∼90 %) with a water flux rate of 5119 L m −2 h −1 under gravity-driven conditions, outperforming most previously reported MOF-based composites. Moreover, multiple ZIF-67@wood catalytic filters can be readily integrated and assembled as a flow-through catalytic reactor for continuous MB degradation. Such cost-effective, highly efficient, and scalable wood-based catalytic filters hold great promise for practical wastewater treatment.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Qun Zhang,Haibin Hu,Pengwei Fang,Yuxuan Song,Sicai Wang,Zijin Zhang,Hongchao Ma,Meiwen Cao
Carbonic anhydrase mimics have recently emerged as promising alternative catalysts for industrial CO 2 capture and utilization. Up to now, many strategies have been developed to design and prepare nanostructures with excellent carbonic anhydrase-like catalytic activity. Herein, two kinds of polyphenol molecules (tannic acid (TA) and gallic acid (GA)) were used to etch amino acid (valine (Val) and leucine (Leu)) modified ZIF-8 (AA-ZIF-8) for fabricating carbonic anhydrase mimics. The TA-treated AA-ZIF-8 (Val-ZIF-8/TA and Leu-ZIF-8/TA) possess hollow nanostructure while the GA-treated AA-ZIF-8 (Val-ZIF-8/GA and Leu-ZIF-8/GA) are decomposed into smaller nanoparticles . Zn-polyphenol coordination interaction and protons released by polyphenols are considered to be the driving force for the etching of AA-ZIF-8. Using hydrolysis of p-nitrophenyl acetate (p-NPA) as the model reaction, the carbonic anhydrase-like activity of AA-ZIF-8/polyphenol nanoparticles were evaluated and the results indicated their excellent catalytic activity. Moreover, after using AA-ZIF-8/polyphenol as catalysts, the CO 2 hydration efficiency could also be enhanced. This work provides a new approach for developing carbonic anhydrase mimics, which could help for designing of materials for industrial CO 2 capture.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Nan Jiang,Qian Wang,Huiqiong Zhang,Ziwei Liu,Hao Yang,Rong Chen,Zhong Lu
Aerosol-based transmission contributes to infection by various pathogens. Consequently, it is urgent to design antimicrobial personal protective equipment (PPE) and address the potential biological contamination of discarded PPE. We report a novel ZIF-67-modified PP fabric for photothermal disinfection; our work provides a fast, one-step, and low-cost preparation approach for incorporating zeolitic imidazolate framework (ZIF) nanoparticles (NPs) onto polypropylene (PP) fabric. First, we prepared ZIF-67-water NPs and ZIF-67-methanol NPs using relevant solvents and characterized them by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, and field-emission scanning electron microscopy. We then used only ultrasonication to prepare ZIF-67-modified fabrics by incorporating ZIF-67 NPs onto PP fabric with a 0.5－1.5 mg/cm 2 loading rate (18.5－40.5 wt%). The ZIF-67-modified fabrics were subjected to the same characterization, and then they were evaluated for photothermal performance, hydrophobicity and antimicrobial ability. The fabric of ZIF-67-water@PP-1.5 was selected to repurpose an antimicrobial mask. We demonstrated that the ZIF-67-modified fabrics have excellent photothermal performance with near-infrared (NIR) radiation and exhibit increased hydrophobicity, which is determined by the loading rate of ZIF-67 NPs. The surface temperature reached and maintained peak levels (70 °C and 90 °C) with NIR radiation, whilst the highest contact angle was over 140°. The photothermal behaviour could kill over 99.9% of gram-negative and gram-positive drug-resistant bacteria, whilst the haemolytic behaviour was less than 5%. The repurposed mask retained controllable photothermal properties. The application of these fabrics not only addresses the demand for affordable antimicrobial PPE but also contributes to reducing potential biochemical threats in discarded PPE.
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DALTON TRANSACTIONS
·
2023
·
IF 4
Ruifeng Wang,Qiyuan Pan,Fang Li,Jingying Guo,Yaru Huo,Chao Xu,Manwen Xiong,Ziyong Cheng,Min Liu,Jun Lin
Caries as a result of acid demineralization is the most common oral microbial infection disease. Due to the small and complex intraoral operating space, it is challenging to completely remove Streptococcus mutans (S. mutans) and other cariogenic bacteria. As an intelligent acid-responsive photosensitive nanomaterial, O2-Cu/ZIF-8@Ce6/ZIF-8@HA (OCZCH) was chosen to adapt the anaerobic and acidic microenvironment to inactivate S. mutans. In this work, OCZCH not only has a regular nanomorphology under the SEM and TEM images but also has an intelligent acid responsiveness as evidenced by the release of Ce6 and oxygen. When excited by near-infrared light at 650 nm, Ce6 released reactive oxygen species (ROS) that act synergistically with internal oxygen to significantly enhance the antimicrobial therapeutic effect of photodynamic therapy (PDT). In vitro, antimicrobial experiments showed that OCZCH could achieve an impressive sterilization effect against S. mutans and the biofilm. Notably, the acid-producing ability of the bacteria was also significantly inhibited. Considering its oxygen-carrying photosensitizing properties, excellent responsiveness to acidic environments, and antimicrobial capacity under anaerobic conditions, OCZCH is considered an innovative candidate for clinical application in treating dental caries.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Chengjuan Wang,Haotian Jiang,Bowen Cui,Xiaodan Xu,Mengfan Li,Zhenhao Xu,Hongxue Tan,Deli Yang,Yanqiu Feng,Yanxiang Wang,Chengguo Wang
Aiming to solve the aggravating electromagnetic radiation issues, high-performance electromagnetic wave (EMW) absorbers are urgently required. Recently, integrating carbonaceous and magnetic materials to obtain dielectric-magnetic double EMW loss has been intensively explored. Here, Co 3 O 4 /Co@carbon nanofibers/carbon nanotubes anchored on carbon fiber (Co 3 O 4 /Co@CNFs/CNTs/CF) hybrids (CFFs) with distinctive heterostructure were synthesized by annealing ZIF-67@CF and catalytic chemical vapor deposition, and deliver great superiorities in microwave dissipation. Specifically, when at a low filling ratio of 25 wt% in paraffin wax, CFF650 acquires a superb minimum reflection loss up to −60.85 dB at only 1.22 mm together with a broad effective absorption bandwidth of 4.24 GHz at merely 1.38 mm. Remarkably, the specific reflection loss of CFF650 achieves an unexpected value, comparable to many distinguished carbon-based composites previously reported. Besides, the simulation of radar cross section values ascertains the fulfilling stealth ability of CFFs under radar detection. These excellent characteristics benefit from the diverse components and unique heterostructures, which form rich conductive networks, plentiful heterogeneous interfaces, appropriate defect polarization and dipole polarization, sufficient magnetic loss as well as optimal impedance matching. Combined with the feasible and efficient fabrication method, this work offers a significant promise of CF-based composites for practical applications in EMW absorption.
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CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Cong Yang,Wenjie Xu,Xin Meng,Xinlong Shi,Luhua Shao,Xiangliang Zeng,Zhenfei Yang,Sijian Li,Yutang Liu,Xinnian Xia
Giving the coating to exert a powerful active protective effect for metal substrates, such as self-healing property by encapsulating corrosion inhibitor into a pH-responsive release tool, is a crucial way to develop an efficient anticorrosive coating. Here, a pH-responsive hydrophilic controlled release system (BTA@ZIF-8@tannic acid, abbreviated ZBT) based on ZIF-8 for waterborne EP self-healing anticorrosive coating was reported. Encapsulation of BTA into ZIF-8 by a facile one-pot method and the resulting product showed a high loading percentage. The anticorrosion performance of composite coatings was studied by EIS, and the results indicated that ZBT could effectively enhance the protective performance of the coating and endow it with outstanding self-healing performance, in which the |Z| 0.01 Hz was about 2 orders of magnitude higher than that of pure EP coating after 20 days of immersion. The outstanding performance is related to the excellent compatibility of ZBT, the blocking effect of newly produced hydrophobic substances and the corrosion inhibitor and ferric tannate protective films formed on the exposed metal surface. In this work, tannic acid plays a role of killing two birds with one stone in enhancing the corrosion protection performance of the coating. This synergistic strategy opens a new possibility to fabricating excellent anticorrosive coatings with efficient self-healing functionality.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Qiongguang Li,Yanhong Wang,Xingyue Gao,Huifang Li,Qiangqiang Tan,Ziyi Zhong,Fabing Su
It is urgent to develop novel anode materials with high energy density and facile synthetic procedures, since the development of commercial lithium ions batteries (LIBs) is limited by the unsatisfied capacity of graphite. Herein, we propose a modified method to prepare core-shell structured ZIF-8 derived N-doped carbon/silicon (Si@NC) composites (6.6 wt% of nano-Si), featuring facile synthetic procedures and mild condition. The physicochemical properties of the ZIF-8 derived N-doped carbon are not changed when the nano-Si particles are employed as the seeds. The Si@NC composites deliver high reversible capacity of 724 mAh g −1 . Attributed to the good charge conductivity and structural stability of the ZIF-8 derived N-doped carbon, the Si@NC composites exhibit good rate performance (98.5% of the initial average capacity is retained after being cycled at different current density) and cycle stability (302 mAh g −1 while that of commercial graphite is ~10 mAh g −1 at 1000 mA g −1 after 800 cycles). The enhancement of lithium storage capability of the ZIF-8 derived N-doped carbon shows promising application in high energy density LIBs.
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CATALYSIS LETTERS
·
2021
·Vol. 152
·期 2
·610-618
·
IF 3.186
Zhou Junjie,Yan Jiaying,Meng Xu,Chen Weifeng,Guo Jianfeng,Liu Xiang
Abstract It is still a significant challenge to replace noble metal based catalysts by non-noble metal-based, highly efficient and earth-abundant catalysts in the H 2 generation upon hydrolysis of sodium borohydride. Herein, we first design and synthesize the highly selective and heterogeneous Co x W y nanocomposites from ZIF-67 as robust catalysts for H 2 production upon the hydrolysis of sodium borohydride. Among them, the Co 0.45 W 0.55 nanocatalyst exhibits the highest TOF of 1770 mL H2 g cat −1 min −1 (the TOF related to only cobalt nanoparticles 8401 mL H2 g Co −1 min −1 ) over pure ZIF-67 or W nanoparticles and other ones. In addition, the Co 0.45 W 0.55 catalyst has been successfully recycled at least 5 times without any significant activity loss, although the W (VI) has been partly reduced to W (V), W (IV) and W (0) in the hydrolysis of sodium borohydride. This stability is taken into account by the highly active Co species rather than the activity of W itself. Based on the results obtained, we have shown that Co 0.45 W 0.55 nanocomposite can be a potential candidate for the replacement of a noble metal catalyst for H 2 generation. Graphic Abstract
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危险品化学品经营许可证（带存储）