RSC Advances
·
2014
·Vol. 4
·期 106
·61736-61742
·
IF 3.708
Shu-Tao Gao,Wei-Hua Liu,Ning-Zhao Shang,Cheng Feng,Qiu-Hua Wu,Zhi Wang,Chun Wang
Efficient utilization of solar energy has received tremendous attention due to the increasing environmental and energy concerns. In this paper, a plasmonic photocatalyst integrated with metal–organic framework (MOF) material, Ag/AgCl@ZIF-8, was fabricated for the first time. The unique hetero-junction structure of Ag/AgCl@ZIF-8 greatly enhanced its photocatalytic activity. Selecting RhB as a model pollutant, 98% of RhB can be degraded after 16 min under solar radiation. The relationship between the photocatalytic activity and the structure of Ag/AgCl@ZIF-8 hybrid materials was discussed and the possible reaction mechanism was proposed. The high photocatalytic activity of the hybrid material under solar radiation revealed its great application potential in directly harvesting solar energy to solve the environmental pollution issues.
研究领域:
材料科学
·
光催化
·
环境科学
·
纳米材料
·
能源化学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yuling Yang,Xiaoli Zeng,Zhixiang Zeng,Linghui Wang,Ping Zhu,Lei Tang,Lijing Zhu
Porous membranes have been fabricated and modified for the separation and purification of wastewater. Although they always suffer from fouling caused by various materials such as oils, dyes, and antibiotics. It is difficult to deal with the boring membrane fouling by one antifouling strategy including hydrophilicity/underwater superoleophobicity. In this work, a synergistic antifouling mechanism combining low oil adhesive underwater superoleophobicity and excellent persulfate advanced oxidation processes (PS-AOPs) performances was developed by facilely loading ZIF-67 catalysts on polypropylene (PP) membranes. The as-prepared composite membranes have stable underwater superoleophobicity and low oil adhesion, which can efficiently separate oil from oil-in-water emulsion and prevent oil adhesion. Moreover, the ZIF-67 catalysts on the composite membranes have excellent degradation performances against various foulants such as methylene blue (MB), tetracycline (TC), and levofloxacin (LVFX), which endow the composite membrane with enhanced antifouling properties during the separation of an oil-in-water emulsion containing MB, TC, and LVFX. The synergistic antifouling mechanism of low oil adhesive underwater superoleophobicity and advanced PS-AOPs provides a facile and efficient strategy for improving the antifouling of the porous membranes in real wastewater purification.
研究领域:
环境科学
·
材料科学
·
化学工程
·
膜分离技术
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水处理
·
催化降解
·
纳米复合材料
·
环境污染控制
✓ 已验证
产品关联
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2021
·Vol. 84
·期 1
·144-158
·
IF 1.915
Yin Jiulong,Tang Hai,Liu Di,Huang Tingting,Zhu Lei
High-performance sulfonated polysulfone (SPSf) mixed-matrix membranes (MMMs) were fabricated via a nonsolvent-induced phase separation (NIPS) method using zeolitic imidazolate frameworks-67 (ZIF-67) as a crosslinker. Acid-base crosslinking occurred between the sulfonic acid groups of SPSf and the tertiary amine groups of the embedded ZIF-67, which improved the dispersion of ZIF-67 and simultaneously improved the membrane strzcture and permselectivity. The dispersion of ZIF-67 in the MMMs and the acid-base crosslinking reaction were verified by energy-dispersive X-ray spectroscopy (EDX), X-ray diffractometry (XRD), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The pore structure analysis of MMMs indicated that filling ZIF-67 into SPSf enhanced the average surface pore sizes, surface porosities and more micropore in cross-sections. The crossflow filtrations showed the MMMs have higher pure water fluxes (57 to 111 L m −2 h −1 ) than the SPSf membrane (55 L m −2 h −1 ) but also higher bovine serum albumin (BSA) rejection rate of 93.9–95.8%, a model protein foulant. The MMMs showed a higher water contact angle than the SPSf membrane due to the addition of hydrophobic ZIF-67 and acid-base crosslinking, and also maintained high thermal stability evidenced by the thermogravimetric analysis (TGA) results. At the optimal ZIF-67 concentration of 0.3 wt%, the water flux of the SPSf-Z67-0.3 membrane was 82 L m −2 h −1 with a high BSA rejection rate of 95.3% at 0.1 MPa and better antifouling performance (FRR = 70%). An SPSf-matrix ultrafiltration (UF) membrane was developed by blending with hydrophobic ZIF-67. ZIF-67 has good dispersibility and compatibility with SPSf of weak acid-base interaction. Simultaneous enhancement in the permeability and selectivity of the MMMs.
研究领域:
材料科学
·
膜技术
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Qiufen Liu,Xuelei Chen,Jiahao Wu,Liming Zhang,Guanjie He,Shouqin Tian,Xiujian Zhao
Metal–organic frameworks (MOFs) constructed by metal ions/clusters and organic linkers are used to encapsulate fluorescent guest species with aggregation-caused quenching (ACQ) effects to enhance fluorescence properties due to their porous structures and high specific surface areas. However, there would be a problem of matching between MOF pores and guest molecules’ sizes. In this paper, amorphous ZIF-8 was modified by carboxyl functional groups (H3BTC-ZIF-8) via introducing the 1,2,4-benzenetricarbonic acid (H3BTC) ligand into the ZIF-8 sol system. Moreover, H3BTC-ZIF-8 was used for the loading of organic fluorescent dyes rhodamine 6G (R6G) and coumarin 151 (C151) to prepare R6G/C151/H3BTC-ZIF-8 composite films. A white-light-emitting composite film (R6G/C151/H3BTC-ZIF-8) with CIE coordinates of (0.323, 0.347) was successfully prepared by compounding fluorescent dyes (R6G and C151) with H3BTC-modified ZIF-8, whose photoluminescence quantum yield (PLQY) can reach 64.0%. It was higher than the PLQY of the composite films prepared by crystalline ZIF-8 (40.2%) or amorphous ZIF-8 without H3BTC (48.0%) compounded with the same concentrations of dyes. The fluorescence enhancement was probably attributed to an increased amount of active sites of H3BTC-modified ZIF-8 interacting with dyes C151 and R6G. This can form hydrogen bonds between H3BTC-ZIF-8 and C151, and weak electron donor–acceptor (D–A) interactions between H3BTC-ZIF-8 and R6G molecules, respectively, thus enhancing the interactions between dyes and ZIF-8 and reducing the ACQ effect existing between dye molecules. Therefore, this strategy could provide an important guidance to develop white-light-emissive materials.
研究领域:
材料科学
·
化学
·
光电技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Siyu Pang,Zhihao Si,Guozhen Li,Hanzhu Wu,Yuhui Cui,Changwei Zhang,Cong Ren,Shuai Yang,Shusheng Pang,Peiyong Qin
A high-quality mixed matrix membrane (MMM) with high flux and separation factor is fostered to enhance ethanol pervaporation . In this study, a fluorinated and defect-free ZIF-8/PDMS membrane was prepared by the covalent bonding among fluoromonomer, ZIF-8 particles and PDMS using a one-pot method. ZIF-8 is first modified with 3-amino-1,2,4-triazole (Atz) to graft –NH 2 groups, and then modified with glycidyl methacrylate (GMA). This was achieved by the amine-epoxide addition reaction (named GZIF-8) to facilitate covalent bonding with methacrylate-functionalized PDMS, where the interfacial compatibility ZIF-8 and PDMS is improved. Moreover, 1H,1H,2H,2H-perfluorooctyl methacrylate (13F) as F-monomer is introduced into the membrane formation process by the polymerization of methacrylate groups among 13F, ZIF-8 and PDMS, where a fluorinated structure with high hydrophobicity and low surface energy is formed. The pervaporation performance for a 5 wt% ethanol solution at 60 °C shows that the resulting MMM has a high separation factor of 9.5 and total flux of 1681 g m −2 h −1 under the optimized parameters of 3 wt% GZIF-8 loading and 12 wt% 13F amounts.
研究领域:
材料科学
·
化学工程
·
膜技术
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Zihan Zhao,Chunfeng Li,Lei Le,Mingli Liu,Zhihao Zhang
The expanding application of corn stalk/polypropylene composites (CPCs) is accompanied by increasingly stringent performance requirements. Consequently, endowing flame retardancy, smoke suppression, and multifunctionality to CPCs while maintaining their mechanical properties is significant. Herein, a biobased flame retardant, arginine/ZIF-67 dual-modified ammonium polyphosphate (APP-Arg-MOF; MOF, metal–organic framework), for CPCs was engineered. APP was first functionalized with Arg via ion exchange to enhance its compatibility and flame retardancy. Subsequently, ZIF-67 was uniformly grown on APP-Arg through coordination-driven assembly using cobalt ions and 2-methylimidazole. The experimental results explained the exceptional multifunctional enhancement. The CPC/APP-Arg-MOF composite achieved a limiting oxygen index of 29.2% and passed the UL-94 V-0 rating. Cone calorimetry revealed significant reductions in the peak heat release rate (63.1%), total heat release (21.9%), and total smoke production (34.7%). Remarkably, the bending and tensile strengths increased by 10.0% and 26.9%, respectively, relative to CPC/APP, attributed to improved interfacial compatibility via Arg and ZIF-67 nanostructures. Furthermore, the CPC/APP-Arg-MOF composite exhibited potent antimicrobial activity, with inhibition rates of 97% against E. coli and 99% against S. aureus, leveraging synergistic effects of Arg and Co2+ release from ZIF-67. Meanwhile, the composite also maintained flame-retardant and antibacterial properties after 200 h of UV aging. Therefore, this work presents a sustainable APP surface modification strategy by utilizing Arg and ZIF-67 to simultaneously enhance fire safety, smoke suppression, and mechanical, antimicrobial, and anti-UV aging performances of CPC, offering significant potential for CPC applications.
研究领域:
高分子复合材料
·
阻燃化学
·
材料科学
·
表面改性
·
功能材料
·
生物基材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Dengzhao Huang,Xinxing Zhan,Lei Tian,Lin Cao,Lihui Lei,Jinshan Xiong,Lingyun Zhou,Juan Tian,Xin Tong
Pt-based alloy catalysts are critical for enhancing the oxygen reduction reaction (ORR) in fuel cells due to their tunable electronic structures and high activity. However, achieving precise control over alloy crystallization and optimizing the chemical environment of catalyst supports remain significant challenges. Herein, a PtCo 3 /N,P-CoNC electrocatalyst was synthesized through pyrolysis of ZIF-67 precursors followed by Pt deposition. Synergistic N and P dual-doping adjusts the electronic configuration of the carbon matrix, promotes strong metal-support interactions (MSI), and increases accessible active sites. The catalyst delivers exceptional ORR activity with a half-wave potential (E 1/2 ) of 0.934 V and a high electrochemical surface area (ECSA) of 121.55 m 2 g Pt -1 . Accelerated durability test (ADT) reveals that PtCo 3 /N,P-CoNC exhibits only 16 mV decay in E 1/2 and 81.40% ECSA retention after 30k cycles. This enhanced stability stems from the strong nanoparticle anchoring effect induced by N, P co-doping, which effectively suppresses nanoparticle aggregation. Density functional theory (DFT) calculations reveal that N, P co-doping synergistically enhances catalytic activity and durability by inducing pronounced electron localization through non-planar P configurations to create an electron-deficient Co environment that strengthens MSI, while simultaneously optimizing the ORR pathway on PtCo 3 (111) surfaces to reduce the Gibbs free energy barrier for the rate-determining step. This work demonstrates a morphology and doping-engineered strategy to design durable, high-performance ORR catalysts, advancing cost-effective fuel cell systems.
研究领域:
电化学
·
催化
·
材料科学
·
纳米技术
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Yun Xiong,Niyan Deng,Xiaoyu Wu,Quan Zhang,Shengpeng Liu,Guofeng Sun
The incorporation of attainable amine functionality in zeolitic imidazolate framework-8 (ZIF-8) is utilized to enhance the pervaporation performance for ethanol/ water separation applications. Using 2-aminobenzimidazole, a ligand with NH 2 -functionalized group, displacement of the ZIF-8 original ligand during de novo synthesis while preserving the ZIF-8 initial structure, which produces a novel mixed- linker ZIF material (ZIF-8-NH 2 ) with smaller nanocrystal size, controllable pore size, and enhanced hydrophilicity. A series of different mixed matrix membranes (MMMs) were fabricated by incorporating ZIF-8-NH 2 into poly(vinyl alcohol) (PVA) matrix. Various characterization techniques, such as FTIR, 1 H NMR, XRD, SEM, TGA, and Contact angle etc. were employed to demonstrate the properties of prepared ZIF nanoparticles and the MMMs. The results indicated that ZIF-8-NH 2 and the MMMs were perfectly fabricated, which were attributed to better dispersion and compatibility between them. In particular, 7-ZIF-8-NH 2 /PVA MMM exhibited a comparable total flux of 142 g/m 2 ·h and water/ethanol separation factor of 925, which were increased by 73 and 524%, on the basis of the pristine PVA membrane. In addition, different nanofillers, APTES crosslinking, ZIF-8-NH 2 loading, operating temperature, feed concentration, and membrane stability were evaluated in detail. This study might provide a promising prospect for designing MOF-based MMMs with the introduction of various functional groups.
研究领域:
材料科学
·
化学工程
·
纳米技术
·
膜技术
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yanyan Zheng,Yueyue Xie,Xu Dong,Shulin Shen,Gensuo Zheng,Jiaqi Weng,Qinying Yan
Biofilms, which are dense bacterial aggregates that form protective adhesion layers on surfaces, are associated with chronic wound infections, severe acne, and various other bacterial infection sites. However, the increasing antibiotic resistance of bacteria within biofilms and the limited penetration capacity of conventional treatments pose significant therapeutic challenges. To address these issues, we engineered a freeze-drying microneedle system integrating indocyanine green-loaded ZIF-8/hyaluronic acid nanoparticles (ICG@ZIF@HA NPs) and graphene oxide (GO) for dual-modal phototherapy. Notably, the microneedles demonstrated robust mechanical strength, enabling penetration through 140 μm-thick Staphylococcus aureus biofilms. Subsequently, the disruption of the biofilm’s structural integrity facilitated the release of ICG@ZIF@HA NPs from the microneedle tips into deeper biofilm regions. Moreover, the nanoparticles exhibited pH-triggered release kinetics, with over 80% of ICG released at pH 5.5 within 2 h, and generated reactive oxygen species (ROS) under 808 nm near-infrared (NIR) irradiation. Meanwhile, the GO in the backing provided localized hyperthermia, reaching 55 °C within 500 s under NIR exposure. By combining ROS generation and bacterial membrane disruption, the microneedle system achieved a synergistic antimicrobial effect, effectively inhibiting bacterial growth and eliminating biofilms under NIR irradiation. Thus, this study establishes a robust foundation for integrating antimicrobial therapy with microneedle technology, offering a safer and more efficient strategy for biofilm eradication.
研究领域:
纳米医学
·
光疗
·
抗菌治疗
·
药物递送系统
·
生物材料
·
生物膜研究
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 21
·7488
·
IF 4.927
Wenjie Zhang,Jianlin Long,Haijun Wang,Jinle Lan,Yunhua Yu,Xiaoping Yang
Polymer electrolytes (PEs) with high flexibility, low cost, and excellent interface compatibility have been considered as an ideal substitute for traditional liquid electrolytes for high safety lithium metal batteries (LMBs). Nevertheless, the mechanical strength of PEs is generally poor to prevent the growth of lithium dendrites during the charge/discharge process, which seriously restricts their wide practical applications. Herein, a mechanical robust ZIF-8/epoxy composite electrolyte with unique pore structure was prepared, which effectively inhibited the growth of lithium dendrites. Meanwhile, the in situ growth of ZIF-8 in porous epoxy matrix can promote the uniform flux and fast transport of lithium ions. Ultimately, the optimal electrolyte shows high ionic conductivity (2.2 × 10−3S cm−1), wide electrochemical window (5 V), and a large Li+transference number (0.70) at room temperature. The Li||NCM811 cell using the optimal electrolyte exhibits high capacity and excellent cycling performance (83.2% capacity retention with 172.1 mA h g−1capacity retained after 200 cycles at 0.2 C). These results indicate that the ZIF-8/epoxy composite electrolyte is of great promise for the application in LMBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Mei Dong,Qiguang Cao,Song Li,Kebin Li
Designing stable and efficient heterogeneous catalysts for peroxymonosulfate (PMS) activation remains a critical challenge in advanced oxidation processes. Herein, we prepared a polyvinylpyrrolidone (PVP)-modified MIL-101(Fe)@CoZn-ZIF (PVP-MCZ) core-shell nanocomposite that synergistically combined enhanced catalytic activity with exceptional stability. The PVP-MCZ catalyst achieved complete degradation of 4-nitrophenol (4-NP) (20 mg/L) within 15 min, while suppressing metal leaching (<0.5 mg/L). Comprehensive characterization (XPS, EPR) revealed a dual-pathway mechanism: (i) radical-dominated SO 4 − generation via Co 2+ /Co 3+ and Fe 2+ /Fe 3+ redox cycling, and (ii) non-radical 1 O 2 production from PMS self-decomposition. This work provides a scalable strategy to design MOF-based catalysts for sustainable water remediation.
研究领域:
环境化学
·
纳米技术
·
催化
·
材料科学
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Na Yang,Xu Guo,Jing Yu,Hongsen Zhang,Rumin Li,Lele Wang,Qi Liu,Jun Wang
The effective removal of radioactive Sr 2+ and Cs + ions from wastewater is crucial for environmental remediation. Herein, a novel solar-enhanced adsorption platform based on a CoS 2 /MoS 2 /P-MXene/C composite aerogel has been developed that can efficiently remove Sr 2+ and Cs + ions. The constructed CoS 2 /MoS 2 heterointerface provides abundant active regions, while the hierarchical porous structure of the aerogel promotes the rapid transfer of ions and water molecules. In particular, the superior photothermal conversion ability of the CoS 2 /MoS 2 /P-MXene/C makes it capable of capturing solar energy for local heating effect, thereby increasing ion diffusion and accelerating mass transfer. This photothermal feature can greatly enhance the adsorption kinetics through the evaporation of the solution and the ion concentration at adsorption sites. The equilibrium of both Sr 2+ and Cs + was reached within 1 h under one-sun illumination. The measured maximum adsorption capacities were 98.7 and 150.6 mg/g for Sr 2+ and Cs + ions, respectively. In addition, it has excellent selectivity and recyclability as well as high performance in high-salinity solution. The CoS 2 /MoS 2 /P-MXene/C also shows promising potential in the fields of solar-driven seawater desalination and purification of wastewater containing dyes due to the multi-functionality. This work not only engineers an efficient adsorbent for treating nuclear wastewater, but also presents a generic design strategy for multifunctional adsorption system enhanced by external fields for environmental applications.
✓ 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）