JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Xiaochen Zhang,Fengjun Deng,Ze Liu,Yingjian Yu
Si-air batteries have a high energy density, high theoretical voltage, and long lifetime, but they present a low anode utilization rate in a potassium hydroxide electrolyte. In this work, a ZIF-8 protective layer was prepared and modulated by a secondary growth method and then applied to protect the Si flat and Si nanowire (NW) anodes of a Si-air battery. By adjusting the conversion ratio, particle size, and crystallinity of ZIF-8 on the Si surface, the contact mode of the Si anode with water and OH – was controlled, thus achieving long-term corrosion and passivation resistance. Si NWs@ZIF-8 exhibited the highest average discharge voltage of 1.16 V, and the Si flat@ZIF-8 anode achieved the longest discharge time of 420 h. This work confirms that ZIF-8 acts as an anode protective layer to improve the properties of Si-air batteries and also provides valuable insights into the protection of Si anodes by MOFs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Electronic Materials
·
2021
·
IF 3.314
Shaoling Cong,Yufei Yang,Kanshe Li,Fan He,Jian Liu,Hua Yuan,Xiaoqin Wang,Runlan Zhang,Jia Chu,Ming Gong,Bohua Wu,Shanxin Xiong,Anning Zhou
Metal organic frameworks (MOFs) have good porosity and adjustable morphology, which are always used as excellent sacrificial templates to derive high-performance layered double hydroxides (LDHs). Here, a humate-based ZIF-67 (HA–ZIF-67) template is first prepared by a natural precipitation method using humates as a substrate. And a humate-based NiCo–LDH (HA–NiCo–LDH) composite material is then successfully prepared via a solvothermal approach with ethanol as a protic solvent. Due to the special composite structure including NiCo–LDH nanocages assembled by interlaced nanosheets, suitable incorporation of layered humate substrate with graphitized microdomains and rich mesopores, the HA–NiCo–LDH exhibits a low resistance during the ionic diffusion, charge transfer, and electron conduction process, a large capacity of 1083 C g–1 (0.5 A g–1), and an excellent cycle stability with a capacity retention of 77% over 10000 GCD loops at 5 A g–1. The assembled asymmetric supercapacitor of the HA–NiCo–LDH//AC also has a decent capacity retention of 52% of initial value with the current density increasing from 0.5 to 10 A g–1, and a large energy density of 44.9 Wh kg–1 at a power density of 348 W kg–1. Its capacity retention is still high to 98% at 5 A g–1 over 5000 GCD loops. Hence, the moderate incorporation of humates is of great significance for practical applications of the NiCo–LDH in supercapacitors.
研究领域:
材料科学
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能源存储技术
✓ 已验证
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2024
·
IF 7.2
Yan Gao,Shuhong Jia,Hongyan Zhou,Ziyun Chen,Miao Yan,Jianshe Zhao
s An efficient and sustainable catalyst is urgently needed for the actual oil refining process. Different amounts of peroxophosphotungstate (PW 4 ) were successfully encapsulated into the pore of ZIF-8 framework material to obtain composites (x%-PW 4 @ZIF-8, x = 10.7, 14.6, 27.5 and 34.8) through a stirring process at room temperature for desulfurization of model diesel. The successful encapsulation of the active component PW 4 in the pore was verified by a variety of characterization methods, and there is weak force between the PW 4 and the ZIF-8. The composite 27.5%-PW 4 @ZIF-8 showed good catalytic activity for various sulfides under moderate conditions. In addition, DBT removal rate catalyzed by 27.5%-PW 4 @ZIF-8 could still reach levels of 95.1% after 10 cycles. The high efficiency of activity and excellent reusability are attributed to the high matching of host and guest sizes. This work provides new inspiration for designing and preparing catalysts with high activity and excellent reusability by a simple and environmentally friendly method.
研究领域:
化学工程
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材料科学
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环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Jianxin Liu,Rui Li,Xiang Zu,Xiaochao Zhang,Yunfang Wang,Yawen Wang,Caimei Fan
Photocatalysis can produce NH 3 using N 2 and H 2 O at room temperature and atmospheric pressure, which has been considering as a safe, clean, and sustainable NH 3 synthesis. However, the poor solubility and slow diffusion rate of N 2 in water severely limited the nitrogen activation efficiency. Herein, we solve this problem by developing a hydrophilic-hydrophobic structure photocatalyst with gas-liquid-solid triphase reaction interface, where hydrophilic Bi 4 O 5 Br 2 is deposited on the surface of hydrophobic ZIF-8 to form a novel Bi 4 O 5 Br 2 /ZIF-8 composite photocatalyst. Such triphase interface architecture allows the direct delivery of N 2 from gas phase to the photocatalytic reaction interface replaced the diffusion of N 2 through the liquid phase. This rapid supply of N 2 can efficiently capture photoinduced electrons, thereby promoting the utilization efficiency of photo-induced electrons and the nitrogen fixation activation. This novel Bi 4 O 5 Br 2 /ZIF-8(30%) composite photocatalyst with good triphase contact performance shows obviously improved photocatalytic nitrogen fixation activity 327.338 μmol·L −1 ·h −1 ·g −1 (3.6 times than that of Bi 4 O 5 Br 2 ). Furthermore, efficient molecular nitrogen activation by Bi 4 O 5 Br 2 /ZIF-8 further brings out an attractive potential to improve other gas-consumption reactions, such as CO 2 reduction, according to this concept of triphase direct contact.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
Nanoscale Advances
·
2025
·
IF 4.6
Rana Ahmed,Abeer Enaiet Allah,Ahmed A. Farghali,Waleed M. A. El Rouby,Abdalla Abdelwahab
The development of efficient and cost-effective oxygen evolution reaction (OER) catalysts is critical for advancing water-splitting technologies. In this study, we report the synthesis of a Sn-doped NiFe layered double hydroxide (LDH) integrated with zeolitic imidazolate framework-67 (ZIF-67)-derived Co species (NiFe-LDH-Sn/ZIF-67) as an efficient catalyst for the OER. The doping of Sn into NiFe-LDH enhances the electronic conductivity and optimizes the active sites for the OER. Concurrently, the introduction of ZIF-67 promotes structural stability and increases the surface area to 727 m2 g−1, fostering synergistic interactions between the components. The NiFe-LDH-Sn/ZIF-67 catalyst exhibits a significantly lower potential of 1.59 V vs. RHE at 10 mA cm−2 and a Tafel slope of 79 mV dec−1 in alkaline media. The study reveals that Sn doping facilitates the electron transfer process by reducing the equivalent series resistance (ESR) from 325 Ω to 161 Ω, while ZIF-67 improves charge redistribution and catalytic stability by 91.8% after 24 h. This study underscores the potential of combining LDH and metal–organic frameworks to design advanced catalysts for sustainable energy applications.
研究领域:
电化学
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材料科学
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催化
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能量转换
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2019
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IF 4.084
Jiaqin Liu,Chuanyao Liu,Aisheng Huang
Hydrogen has been regarded as the most promising clean and renewable energy. Beside the production of the hydrogen, the separation of hydrogen is also an import issue before it can be used in fuel cells. Membrane-based separation technologies have gained considerable attentions due to its high efficiency and low energy consumption. Zeolite imidazolate framework (ZIF) membranes have drawn intense interest due to their zeolite-like properties such as permanent porosity, uniform pore size and exceptional thermal and chemical stability. It is rather challenged to prepare well-intergrown Co-based zeolitic imidazolate frameworks (ZIFs) membranes on porous α-Al 2 O 3 tubes since Co-based ZIFs prefer to form crystals in the synthesis solution rather than grow as membrane layer on the support surface. In this work, we report the preparation of high-quality ZIF-9 membrane with high H 2 /CO 2 selectivity and excellent thermal stability by using 3-aminopropyltriethoxysilane (APTES) as a covalent linker to modify the α-Al 2 O 3 tube. Due to the formation of covalent bonds between APTES and ZIF-9, ZIF-9 nutrients are bound to the support surface, thus promoting the growth of dense and phase-pure ZIF-9 membrane with a thin thickness of about 4.0 μm. The gas separation performances of the ZIF-9 membrane were evaluated by single gas permeation and mixture gas separation of H 2 /CO 2 , H 2 /N 2 and H 2 /CH 4 , respectively. The mixture separation factors of H 2 /CO 2 , H 2 /CH 4 , and H 2 /N 2 of the ZIF-9 membrane are 21.5, 8.2 and 14.7, respectively, which by far exceeds corresponding Knudsen coefficients. Moreover, the as-prepared ZIF-9 membrane exhibits excellent stability at a relatively broad range of operating temperature, which is beneficial for the industrial application of hydrogen separation or further membrane reactor .
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Li Liu,Yuefeng Huang,Zhenqiang Kan,Yaohong Yang,Peng Wang,Yuju Chen,Dongyu Wei,Hong Lei,Guanben Du,Lianpeng Zhang
The application of biopolymers in adhesive design holds immense potential for advancing the sustainable manufacturing of high-performance materials. In this study, chitosan (CS), a renewable and biodegradable biopolymer, serves as the structural backbone for developing an innovative organic-inorganic hybrid resin Cu/ZIF-8@CS-MCS@BN. Initially, CS was chemically functionalized via crosslinking with maleic anhydride (MA) to form a maleated chitosan network (CS-MCS), exploiting the biopolymer's abundant amino and hydroxyl groups for covalent bonding. This chitosan-based network was subsequently reinforced with boron nitride nanosheets (BN) and copper-doped ZIF-8 metal-organic frameworks (Cu/ZIF-8), synergistically combining the flame-retardant and mechanical-enhancing properties of inorganic fillers with the organic network of the chitosan matrix. The Cu/ZIF-8@CS-MCS@BN resin was processed into two distinct wood composites: (1) plywood fabricated by hot-pressing poplar veneers with the resin exhibited exceptional interfacial adhesion, achieving a boiling-water-resistant shear strength of 1.01 MPa, which surpasses the requirements of the Chinese national standard GB/T 9846–2015; (2) lightweight aerogels prepared by freeze-drying resin-wood flour mixtures demonstrated outstanding compressive resistance (compressive modulus: 45.23 MPa) and fire safety (limiting oxygen index (LOI) = 42.8 %, UL-94 V-0 rating). This work establishes a green paradigm for fabricating multifunctional wood composites, highlighting the pivotal role of biopolymer engineering in next-generation construction materials.
研究领域:
生物高分子材料
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胶黏剂设计
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阻燃材料
·
木材加工
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纳米材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hui Ye,Xiao Zhang,Xijie Wang,Chuan Gao,Shurui Han,Jing Lv,Jinke An,YuZhong Zhang,Lizhi Zhao,Qingping Xin,Ligang Lin,Xiaoli Ding
Membranes are extensively utilized for protein separation and purification; however, fouling is a significant challenge and limits further practical application. Biocatalytic membranes have attracted much attention due to their potential anti-fouling and self-cleaning properties. Herein, biocatalytic nanofibrous porous membranes were fabricated through an in-situ zeolitic imidazolate frameworks (ZIF-8) anchored and trypsin incorporation strategy. Ethylene vinyl alcohol copolymer (EVAL) nanofibers, doped with Zn(Ⅱ) or ZIF-8, were fabricated via electrospinning, and then ZIF-8 layers were anchored onto the surface of the nanofibers via in-situ growth. Continuous ZIF-8 layers were observed and almost completely covered the surface of the nanofibers, providing 2.7-fold trypsin loading than ZIF-8 crystals in solution. For the biocatalytic nanofibrous membranes, the trypsin loading were both exceeded 270 µg cm −2 and the maximum reaction rate values of membranes during filtration increased by 120 % than that of free trypsin. Enhanced hydrophilicity and protein-digestive functionality contributed to high self-cleaning properties of the membranes. The biocatalytic nanofibrous membranes demonstrated 2-fold flux recovery and improved BSA resistance compared to the pristine membrane after BSA filtration. Moreover, the membranes retained high anti-fouling properties after five reuse cycles, utilizing only a simple and cost-effective washing operation. Such biocatalytic nanofibrous membranes hold great promise for enhanced anti-fouling and self-cleaning performance in water applications.
研究领域:
材料科学
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生物工程
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Lin Jiang,Xiaoting Ma,Zhongqiong Feng,Yan Xu
Efficient uranium extraction is critical for ensuring nuclear fuel supply and minimizing environmental risks. Although polyamidoxime (PAO) exhibits strong and selective binding toward uranyl ions, conventional PAO-based materials suffer from limited adsorption efficiency due to suboptimal pore architecture and restricted mass transfer. Herein, we combine the ice-templating technique with an in-situ growth strategy to integrate PAO with ZIF-8, forming hierarchically porous PAO@ZIF-8 aerogels for efficient uranium extraction. The integration of a hierarchical porous architecture and multiple synergistic active sites endows the aerogels with high uranium adsorption capacity of 741.6 mg g −1 in deionized water. The aerogels demonstrate good mechanical strength, hydrophilicity, and thermal stability, ensuring their structural integrity and operational reliability in practical applications. Moreover, the PAO@ZIF-8 aerogels show high selectivity for uranyl ions (UO 2 2+ ), significantly surpassing common competing ions. This superior performance arises from the synergistic effect of amidoxime functional groups and the ZIF-8 framework, which provide abundant coordination sites and rapid mass transfer pathways. With facile synthesis, high efficiency, and superior selectivity, the PAO@ZIF-8 aerogels hold great promise for practical uranium recovery from seawater and remediation of nuclear wastewater, advancing the sustainable development of nuclear energy and environmental protection.
研究领域:
材料科学
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核工程
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环境科学
·
吸附技术
·
可持续能源
✓ 已验证
产品关联
DOI
高影响因子
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.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2020
·
IF 3.871
Chumei Ye,Xingyu Wu,Hong Wu,Leixin Yang,Yanxiong Ren,Yingzhen Wu,Yutao Liu,Zheyuan Guo,Rui Zhao,Zhongyi Jiang
Membrane-based separations are of energy-efficient and environmentally benign attributes for biogas energy developments. Membranes from polymers of intrinsic microporosity (PIMs) often suffer from low selectivity. In this study, remarkable enhancements in CO 2 /CH 4 selectivity of PIM-1 membranes are achieved by incorporating nano-sized ZIF-67 (ZIF-S) filler with a larger specific surface area and a better compatibility, thereby fortifying the interactions with PIM-1 matrix and effectively alleviating nonselective interfacial voids. For the resulting PIM-1/ZIF-S membranes, a maximum CO 2 /CH 4 selectivity of 21.1 was acquired with 15 wt% loading of ZIF-S, an increase of 69.40% compared with the pristine PIM-1 membrane, along with an associated CO 2 permeability above 2800 Barrer. To elucidate gas transport behaviors within membranes, a modified Maxwell model is developed and the calculation results match well with the experimental data. The strategy of incorporating framework nanofillers into membranes may find promising applications in enhancing the selectivity of highly permeable polymer membranes.
研究领域:
材料科学
·
环境工程
·
能源技术
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Shouhui Chen,Rihui Zhou,Yaqin Chen,Ping Li,Yonghai Song,Li Wang
Zeolitic imidazolate frameworks are a class of metal organic frameworks which are very attractive for their pore structures. However, their pore size and the BET surface would shrink when they underwent heat treatment at high temperature. On the other hand, liquid metal in MOFs might flow through the pores and prevent the shrinkage when pyrolysis. As is known that metallic Sn is liquid when the temperature is above 232 °C, flowing Sn might support and maintain the porous structure of MOFs during the pyrolysis. In this work, porous Sn/C-ZnO core-shell structures were prepared as anodes for LIBs via a two-step method. Firstly, SnO 2 particles were encapsulated in a ZIF-8 layer with different thickness. Then Sn/C-ZnO was generated in inert atmosphere at 700 °C. A Sn/C-ZnO composite, with 11.2% of Sn and 21.0% of ZnO in content, had a BET surface of 32.9 m 2 g -1 . Another Sn/C-ZnO composite, with 55.1% of Sn and 1.8% of ZnO in content, had a larger BET surface of 297 m 2 g -1 . Then the two composites were tested as anodes for LIBs. Although the BET surface of the former was significantly less than that of the latter before cycling and the content of Sn in the former was also much lower than that of the latter, the discharge capacity of the former after 50 cycles was 515.6 mAh g -1 at 100 mA g -1 in the potential of 0.01~3.00 V, which was slightly higher than that of the latter.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）