Advanced Materials Technologies
·
2017
·Vol. 2
·期 12
·1700224
·
IF 0
Zehui Li,Wenbo Wang,Hongbin Cao,Qiang Zhang,Xinyuan Zhou,Dongbin Wang,Yaling Wang,Shuangshuang Zhang,Guangjin Zhang,Chenming Liu,Yi Zhang,Rongji Liu,Jingkun Jiang
A new hydrogen peroxide detection sensitive material, boron doped carbonized ZIF-67@graphene (Co-N/C@G-B) is synthesized through pyrolysis of a sandwich-like ZIF-67 coating graphene material. After doping boron atoms by using chemical vapor deposition method, new active sites such as Co 2 B and B N C bonds are created, and mesopores are significantly increased. Most importantly, this Co-N/C@G-B material is found to exhibit excellent performance as an enzyme-free biosensor for detecting hydrogen peroxide with a very wide detection range (from 0.5 × 10 −6 to 60 × 10 −3 m ), a low detection limit (0.19 × 10 −6 m ), and a rapid response time (≈3 s). The prepared biosensor also shows strong anti-interference ability in the complex working occasions. Furthermore, for real application of the materials, an electronic device of biosensor is developed by using technologies of screen printing electrode, integrated circuit, 3D printed shell, and custom-developed program, which shows high sensitivity and portability to detect hydrogen peroxide. Such device paves a way for further practical application of advanced materials in commercial scale.
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DOI
HYDROMETALLURGY
·
2018
·
IF 3.3
Zhike Wang,Boshuang Zhang,Cunling Ye,Lingyun Chen
Metal organic frameworks (MOFs) have diverse applications in adsorption/separation fields. However, little is known about MOFs as adsorbents for the adsorption of Au(III) from aqueous solutions. In this work, a highly porous MOFs, ZIF-8, was modified by thiourea (TU) via coordination-based post-synthetic modification strategy. Compared with pristine ZIF-8, the TU functionalized ZIF-8, TU*ZIF-8, exhibited a remarkable Au(III) adsorption ability with a saturation adsorption capacity of 4262.8 mg/g although its surface area and pore volume decreased with TU loading. Interestingly, the adsorption efficiency of Au(III) was >99% with a broad Au(III) concentration range of 50–400 mg/L using only 20 mg TU*ZIF-8. Meanwhile, TU*ZIF-8 showed an encouraging selectivity for Au(III) in the presence of some metal ions such as Cu(II), Cr(VI), Pb(II), Cd(II), Mn(II), Mg(II), and Co(II). The improved adsorption of Au(III) on TU*ZIF-8 is explained by the synergistic effect of electrostatic interaction and coordination interaction. Particularly, the coordination interaction between Au(III) and TU of TU*ZIF-8 plays a major role in the Au(III) adsorption process of TU*ZIF-8. This work suggests a potential application of functionalized MOFs for the efficient recovery of gold from aqueous solutions.
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2022
·
IF 10.753
Yanying He,Qizi Fu,Xiaopei Li,Linmiao Yin,Dongbo Wang,Yiwen Liu
Photocatalysis has been considered a promising method for environmental purification. However, powder nanomaterials are not suitable for large-scale application due to the limit of low recyclability and energy-intensive operation. Integrating and depositing powder photocatalysts on monolithic substrates may solve these issues. In this study, a ZIF-8 photocatalyst membrane and its derived product (ZnS photocatalyst membrane) was constructed by a facile in-situ treatment of cellulose-based substrate (take filter paper as an example). Both the two nanomaterials were confirmed to be tightly anchored to filter paper with the aid of chemical interaction. Under visible light irradiation, excellent dynamic-flow photocatalytic removal efficiencies of methylene blue (MB) degradation (97% within 80 min, k = 0.042 ± 0.002 min −1 ) and Cr(VI) reduction (100% within 60 min, k = 0.116 ± 0.007 min −1 ) were achieved by the prepared ZIF-8 photocatalyst membrane and its derived ZnS photocatalyst, respectively. Considering the high MB adsorption capacity and facile regeneration process of ZIF-8 photocatalyst membrane, the adsorption-degradation strategy was promising for its universal applications. The MB degradation pathway and photocatalytic mechanisms were also explored. Ultimately, a comprehensive discussion on the advantages and implications of prepared photocatalyst membranes for photocatalytic water treatment was rationally proposed. This study provided a promising method for water decontamination and demonstrated the significant superiority of monolithic membrane for photocatalytic water treatment.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Huaxing Song,Geqian Fang,Zhaohua Gao,Yang Su,Xiaorui Yan,Jian Lin,Wenhua Wang,Wanzhong Ren,Haisheng Wei
Supported metal catalysts play a significant role in heterogeneous catalysis in liquid phase reaction systems, but they usually suffer from a stability problem. Encapsulation of active metal species without the compromise of catalytic performance has been considered as an effective strategy. Here, we report an ultrastable Ru-based catalyst with particle size of around 1.1 nm for selective hydrogenation reaction. The highly dispersed Ru species are covered by the in situ formed porous N–C–ZnO overlayer, which is induced through the transforming of ZIF-8 shell that derives from a ZnO substrate. The resulting Ru/ZnO@N–C–ZnO catalyst can exhibit good stability in the hydrogenation of p-chloronitrobenzene after 20 cyclic runs with 100% selectivity toward p-chloroaniline. Comparatively, the naked Ru/ZnO catalyst with larger Ru particles shows serious metal leaching issue with inferior stability and poor selectivity. It is revealed that the excellent performance of Ru/ZnO@N–C–ZnO is attributed to the porous overlayer, which strengthens the bonding of Ru nanoparticles on ZnO.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Chunhong Liang,Xiaodan Zhang,Ping Feng,Hongxiang Chai,Yuming Huang
The hollow nanostructures receive increasing attention in recent years. In particular, the confined cavity in the hollow nanostructures can function as a carrier for loading target molecules, whereas the porous walls are beneficial for shortening the transport distance of target molecules from solution to surface of adsorbent, making it possible to achieve high adsorption capacity with short adsorption time. Here, the hollow Co 3 S 4 was synthesized by using ZIF-67 as template and thioacetamide as sulfide reagent through a simple solvothermal method, and characterized by SEM, TEM, HRTEM, XRD, FT-IR, zeta potential measurement, TG, N 2 adsorption-desorption and XPS analysis. The adsorption performance of hollow Co 3 S 4 for ciprofloxacin (CIP) antibiotics was evaluated in neutral aqueous solution. The equilibrium adsorption data were well fitted by Langmuir model, and a high maximum CIP adsorption capacity of 471.7 mg g −1 was obtained. The relatively high correlation coefficient of Tempkin model ( r 2 = 0.960) indicated a stronger electrostatic interaction between CIP and hollow Co 3 S 4 , which was consistent with the observation from the effects of pH and ionic strength. Result of adsorption kinetic investigation indicated fast CIP adsorption by hollow Co 3 S 4 . The adsorption kinetics follows the pseudo-second-order kinetic model and liquid-film diffusion model. CIP adsorption by hollow Co 3 S 4 was hardly affected by humic acid. Further, the hollow Co 3 S 4 exhibited no obvious loss in CIP removal after recycling for five times. The result displays an important environmental significance of hollow Co 3 S 4 for CIP sequestration, in particular in wastewater, where CIP antibiotics are only slightly transformed or even unchanged.
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高影响因子
APL Materials
·
2024
·Vol. 12
·期 1
·
IF 5.3
Luan Pengyan,Yang Zhenxin,Liang Zheng,Li Xiaoliang,Chen Nan,Li Fushun,Li Xuanhe,Su Jiale,Lu Zheng-Hong,Zhu Qiang
Zeolitic imidazolate framework-8 (ZIF-8) is a versatile candidate for next-generation electronics owing to its adjustable lattice and physicochemical properties. However, the utilization of ZIF-8 for the fabrication of solid-state electronics and circuit components, such as field-effect transistors (FETs), has not been realized thus far, primarily due to ongoing debates surrounding its electrical properties. In this work, we fabricated n-type FETs using ZIF-8@ZnO nanorod arrays. A significant hysteresis behavior was observed. It was demonstrated that this hysteresis cannot be assigned to the well-established ferroelectric effect but rather to the polarization of ZIF-8, wherein the electric field of the gate aligns the dipole of 2-methylimidazole through molecular orientation rotation. It was clarified that the process of annealing in air can result in the chemisorption of oxygen on methylimidazole, leading to a limitation in the rotation of methylimidazole. This restriction ultimately causes the depolarization of ZIF-8, resulting in the erasure of hysteresis. This study unfolds the tunable hysteresis behavior of ZIF-8 and its sensibility to oxygen, thereby highlighting the potential applications of ZIF-8 in FETs, nonvolatile memories, and gas sensors.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Min-Ping Zhu,Jia-Cheng E. Yang,Xiaoguang Duan,Dan-Dan Zhang,Shaobin Wang,Baoling Yuan,Ming-Lai Fu
Metal organic frameworks (MOFs)-based catalysts are rising stars in advanced oxidation processes (AOPs) to generate reactive oxygen species (ROS). Nevertheless, constructing an affordable and recyclable MOFs-derived catalyst with high reactivity and stability is highly desirable but still challenging. Herein, we unprecedentedly designed a novel CoAl 2 O 4 @γ-Al 2 O 3 pellet (CoAl 2 O 4 @AP) as a heterogeneous catalyst to activate peroxymonosulfate (PMS) toward ROS generation for metronidazole (MNZ) removal. A CoAl 2 O 4 shell was formed on the pellet surface by direct calcination of the surface-nucleated ZIF-67 on γ-Al 2 O 3 pellets. The strong and unique interactions between the Co species of ZIF-67 and γ-Al 2 O 3 resulted in the formation of interfacial CoAl 2 O 4 . The CoAl 2 O 4 @AP exhibited a remarkably higher efficacy for PMS activation than ZIF-67-derived Co 3 O 4 and commercial Co 3 O 4 . The effects of several reaction parameters (i.e., PMS dosage, reaction temperature, initial pH, and background inorganic ions) on MNZ removal were comprehensively investigated and the degradation pathways of MNZ were elucidated. The Co 2+ /Co 3+ and oxygen vacancies of CoAl 2 O 4 @AP were the intrinsic active centers for PMS activation to simultaneously generate a diversity of ROS, among which SO 4 − and 1 O 2 played the decisive roles in MNZ decomposition. After the reaction, CoAl 2 O 4 @AP can be easily separated from the bulk solution and regenerated via a PMS-assisted cleaning process, making the composites highly appealing for practical applications. This pioneering work on constructing microscopic CoAl 2 O 4 -based composites expands the application of MOFs-based catalysts in novel AOPs systems for the treatment of persistent emerging pollutants.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Xia Wang,Fei Yang,Min Jiang,Lingyi Shen,Ji Ma,Jianming Zhang
Effective utilization of waste biomass has been a fascinating topic for the development of sustainable energy. An effective alkaline hydrothermal/pyrolysis process was designed to prepare highly porous carbons noted as HK-PSC800 using waste Platanus acerifolia seeds as precursors. A symmetric supercapacitor (SSC) device based the same two HK-PSC800 electrodes owns the high specific energy density (30.9 Wh kg −1 at a low power density of 500 W kg −1 ) with excellent rate capability. To further optimize the energy density of the device, two types of asymmetric supercapacitors (ASC) with a working potential window of 1.5 V are designed and assembled by using HK-PSC800 and Co 3 O 4 derived from zeolitic imidazolate framework-67 as electrode materials . The specific energy density of as-fabricated ASC (Co 3 O 4 //HK-PSC800) with pure Co 3 O 4 materials as the positive electrode is nearly the same as the SSC (HK-PSC800//HK-PSC800). However, the specific energy density of the other ASC (Co 3 O 4 @HK-PSC800//HK-PSC800) can be improved by 18.8% when 28 wt% Co 3 O 4 is in-situ grown in HK-PSC800 as the positive electrode. This research proves that the suitable composition of ASC electrode materials helps us to develop biomass based carbons materials for application in the high-voltage and high-energy devices.
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高影响因子
Journal of Cleaner Production
·
2025
·
IF 10
Miao Wang,Donghui Xu,Ying Zhang,Jie Zhou,Zhihao Lin,Yiming Zhao,Xin Ding,Bin Sheng,Xiaobin Wen,Xiao Song,Ge Chen,Xiaomin Xu,Xin Yang,Guangyang Liu
The application of ZIF nanomaterials as controlled release agents for pesticides holds significant promise in enhancing pesticide utilization efficiency, prolonging their effectiveness, and minimizing pesticide residues. However, the loading efficiency of single ZIF is limited and susceptible to external stimuli. Therefore, in order to improve the loading rate of the material and enhance the bioavailability of the pesticide, a novel porous nanocarrier (MPN (Fe) @ZIF-8) was prepared for loading the neonicotinoid pesticide thiacloprid (THIA) by combining the biocompatible material metal polyphenol network (MPN) with ZIF-8 using the co-precipitation method and layer-by-layer self-assembly strategy. Through the selection of carrier materials and optimization of loading conditions, MPN (Fe) @ZIF-8 with irregular coral-like structure was obtained, which had high specific surface area (82.15 m 2 /g) and excellent load ratio (18.93 %). In addition, with the aim of preventing pesticide leakage, polyethyleneimine (PEI) was added to the nanocarrier system as a sealing agent, and porous ZIF nanopesticides with pH-responsive properties (MPN (Fe) @ZIF-8@THIA@PEI) were prepared. In vitro release experiments showed that MPN (Fe) @ZIF-8@THIA@PEI favoured the release of THIA (72.33 % cumulative release) under alkaline conditions (pH = 8.6), whereas it was delayed (42.24 % cumulative release) under acidic conditions (pH = 3.6). It was noteworthy that MPN (Fe) @ZIF-8@THIA@PEI has a higher lethality rate (89.04 %) against B. tabaci than commercial THIA reagents (66.67 %). Furthermore, after 8 h of UV irradiation, the residual pesticide in the commercial THIA reagent was only 11.27 %, while that in MPN (Fe) @ZIF-8@THIA@PEI remained at 73.98 %. Hence, this work provides new ideas for the development of green and environmentally friendly stimuli-responsive porous controlled release agents.
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2025
·
IF 4.7
Xin Lu,Ling Yang,Dandan Peng,Yuchen Li,Zengmin Tang,Haihu Tan
Excessive tetracycline (TC) residues pose risks to human health and harm ecosystems, threatening ecological sustainability. To achieve trace detection and highly efficient removal of TC, this study designed and synthesized a composite material (puCDs@ZIF-8) by embedding waterborne polyurethane (WPU)-derived carbon dots (puCDs) in zeolitic imidazolate framework-8 (ZIF-8). Consequently, a novel ratiometric fluorescent probe was constructed. The dual-emission fluorescence signal originates from two mechanisms: (i) TC quenches the blue fluorescence of puCDs at 450 nm via the inner filter effect (IFE); (ii) coordination between Zn 2+ and TC triggers an aggregation-induced emission (AIE) effect, which gives rise to a new fluorescence emission at 530 nm. Both signals' intensities vary proportionally with TC concentration, enabling highly sensitive detection based on the fluorescence intensity ratio (F 450 /F 530 ). A wide linear concentration range of 0–60 μg mL −1 and a low detection limit (LOD) of 0.0089 μg mL −1 were achieved by the probe under optimized conditions. Notably, this sensitivity is significantly higher than that of pure puCDs (LOD = 0.343 μg mL −1 ). Application of the prepared probe to milk yielded favorable recoveries between 95.6 % and 106.3 %, confirming its practical utility for TC detection. In addition, the equilibrium adsorption capacity of puCDs@ZIF-8 for TC in aqueous solution reaches 409.45 mg g −1 , enabling efficient TC removal. This study provides novel insights into the construction of ratiometric fluorescent probes with removal capabilities.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Feng Xiao,Haoqun Yao,Ruiyang Qiu,Wenjie You,Zichao Cai,Xiaoyu Wang,Weikang Hu,Weijun Liu,Zijian Wang
Bacterial infection impairs skin wound healing, leading to a growing healthcare challenge. Biomolecular microneedles are developed to deliver the antibiotics, offering desirable broad-spectrum antibacterial activity for accelerating wound healing. However, the application of antibiotics is limited owning to potential drug resistance. Reactive oxygen species (ROS) have recently emerged as the next-generation antibacterial agents, due to their distinctive advantages over antibiotics. It remains a challenge to endow the antibiotic-free microneedles with enhanced ROS-production and antibacterial efficiency. Herein, a core-shell ZIF-67/MoS 2 (ZM) heterojunction was synthesized using a hydrothermal method. Compared to ZIF-67 nanoparticles, ZM heterojunction not only generated more photo-generated electrons, but also reduced the energy loss during electron transfer. Thus, the photocatalytic potential of ZM heterojunction got significantly improved for ROS production. ZM heterojunction was integrated into the double-layer gelatin methacryloyl/ZM heterojunction (GMZM) microneedle. The photothermal nanozyme-like activity, broad-spectrum antibacterial activity, and biocompatibility of GMZM microneedle were verified. Under NIR irradiation, GMZM microneedle completed 98.02 ± 1.22 % of wound closure period within 16 days. The overall application effect of GMZM microneedle was not inferior to that of commercial wound dressings from 3 M Co., Ltd. In conclusion, this study developed an antibiotic-free GMZM microneedle demonstrating superior performances, showing great potential for the treatment of infected wounds.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yuewen Chen,Tao Zheng,Hai Liu,Weidong Xie,Jiali Huang,Yimin Wang,Xiya Zhang,Zhen Yuan,Zhile Xiong
The electrocatalytic reduction of CO 2 to CO represents an important approach for carbon resource utilization. However, most existing catalysts still suffer from low activity and poor selectivity. In this work, a novel “domain-confined interface” synergistic catalytic system was constructed by integrating ionic liquid [BMIM][BF 4 ] with zeolitic imidazolate framework-8 (ZIF-8) to enhance the CO 2 reduction reaction (CO 2 RR) performance. The high specific surface area and microporous structure of ZIF-8 provide an ideal platform for CO 2 adsorption and activation, while [BMIM][BF 4 ] improves the local microenvironment of the catalytic interface, thereby boosting the catalytic activity. Experimental results indicate that the incorporation of the ionic liquid significantly enhances the CO 2 RR performance of ZIF-8 at low potentials. The Faradaic efficiency for CO (FE CO ) increases from 38.98 % to 75.25 % at −0.8 V versus the reversible hydrogen electrode (RHE). Moreover, at the optimal potential of −1.2 V (vs. RHE), FE CO reaches 96 % and remains stable during an 8-hour durability test, outperforming most reported ZIF-8-based catalysts. This work may provide useful insights for the design of efficient CO 2 RR electrocatalysts.
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高影响因子
危险品化学品经营许可证（带存储）