Energy Advances
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2024
·Vol. 3
·期 3
·654-663
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IF 3.2
Xi Guo,Li Li,Shuo Wang,Huan Zhang,Yuzhen Kuang,Guangbin Duan,Bingqiang Cao
In situ growth of nano-arrays on substrate materials is a neoteric and efficacious catalyst design strategy, but it is still a difficulty to prepare unique nano-structured electrocatalysts with excellent activity for the oxygen evolution reaction (OER). In this study, phosphidizating ternary nickel/iron/cobalt hybrid nano-arrays (NiFeCo-P) with vertically staggered growth were successfully synthesized on the surface of nickel foam (NF) through three steps: impregnation, hydrothermal reaction and phosphidizating calcination. The initial ZIF-67/NF and the derived NiFeCo-layered double hydroxide (LDH)/NF nano-array (NiFeCo-LDH/NF) template promote the charge transfer and ion diffusion between electrolyte surfaces, which is attributed to the enhancement of the interface contact area of electrolyte ions. Phosphidizated NiFeCo-LDH/NF nano-arrays (NiFeCo-P/NF) showed lower overpotential of 251 and 278 mV at 50 mA cm−2 and 100 mA cm−2, respectively. The Tafel slope was 25.24 mV dec−1, which was better than the performance of some transition metal-based OER catalysts reported before. Electrochemical impedance spectroscopy further revealed the good kinetics in the electrolysis process. Furthermore, the high structural stability of the nanosheet array promotes the generation of the active phase in the OER process, so it has good stability after continuous operation for 20 h at a current density of 50 mA cm−2.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Rui Gou,Yong Li,Qilong Chen,Sha Wang,Dan Sun,Changhua Li,Xianmin Gong,Yi He
Metal corrosion causes a lot of waste of resources, and the protection of metals from corrosion is becoming increasingly important. In this study, zeolite-imidazole (ZIF-67) was grown on the surface of Co-MOF for the first time by a one-step (complexation) method. 2-Mercaptobenzimidazole (MBI) was then loaded into the inner cavity of ZIF-67, resulting in the formation of a new composite material, Co-MOF@ZIF-67@MBI. The modified Co-MOF exhibits excellent interfacial compatibility with the water-based epoxy resin, and the Co-MOF@ZIF-67@MBI composite coating demonstrates robust anti-corrosion properties. Following a 60-day immersion period, the electrochemical experiment demonstrated that the corrosion resistance modulus of the Co-MOF@ZIF-67@MBI composite coating reached 10 8 Ω cm², indicating that the coating effectively enhanced the corrosion resistance of the coating and significantly extended the service life of the coating.
研究领域:
材料科学
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腐蚀与防护
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复合材料
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DOI
高影响因子
Energy Materials
·
2023
·Vol. 3
·期 1
·N
·
IF 0
Xin Liang,Dongqing Zhao,Lulu Wang,Qianqian Huang,Chonghai Deng,Lili Wang,Lei Hu,Sheng Liang,Huaxia Deng,Hongfa Xiang
A gelatin-based nanofiber separator doped with C60 and ZIF-67 was constructed by electrostatic spinning of two different solutions. It can be used as a multifunctional separator for Li-S batteries.
研究领域:
材料科学
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电化学
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纳米技术
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能源存储
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高分子材料
✓ 已验证
DOI
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Yingyue Wang,Guojian Zhang,Jinyang Huang,Mengying Long,Dongmin An
In this paper, pure SnO 2 and SnO 2 composite materials (ZSnO 2 ) modified with different amounts of ZIF-67 (20 mg, 60 mg) were synthesized utilizing a simple solvothermal method. The gas sensing performance of these sensitive materials was tested, and the results manifested that at a low operating temperature of 170 ℃, the responses of ZSnO 2 -60 and ZSnO 2 -20–50 ppm triethylamine (TEA) gas reached 142.6 and 83.7, respectively, which was ∼3.81 and ∼2.24 times that of pure SnO 2 (34.7). In addition, both doped samples had lower operating temperature, excellent selectivity and repeatability towards TEA gas. The doping of ZIF-67 led to oxygen vacancies increasing, specific surface area amplifying and p-n heterojunctions forming between Co 3 O 4 and SnO 2 in ZSnO 2 nanocomposites. These synergistic effects enhanced the gas sensitivity of ZSnO 2 nanocomposites to TEA gas.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Zhan Zhang,Yifan Liu,Rongmei Zhu,Huan Pang
Multimetallic oxide configuration and hollow structure construction are effective strategies for the design of efficient electrocatalysts , which can regulate the intrinsic properties of the active sites, enlarge the specific surface areas and expose more active sites. In this work, hollow-structured CuCo-based ternary metal oxides supported nitrogen-carbon networks (HS-CuMCoO x , M = Fe/Zn/Ni) derived from ZIF-67 hollow spheres were fabricated through facile ion exchange and heat treatment. The prepared composites possess hollow configurations with homogeneously dispersed trimetallic active species on the shells. Among all the ternary metallic derivatives, hollow spheres supporting Cu, Fe, and Co oxides (HS-CuFeCoO x ) exhibited highest electrocatalytic activity towards oxygen evolution reaction (OER). The improved OER performance ascribed to the inherent electrocatalytic properties of the ternary metal active species and microstructure by hollow structure design and heat treatment, which offered an effective synthetic strategy for the fabrication of trimetallic oxide composites for as OER electrocatalysts.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Shang Wu,Xin Xu,Xin Sun,Sheng Zhou,Chaoyang Liu,Penghui Zhang,Shuaishuai Fu,Hong Zhang,Shaofeng Pang,Xia Wang,Quanlu Yang
Metal organic framework (MOF) as an electrode material is still a great challenge due to inherent instability and poor electrical conductivity . Herein, we design a material rGO/NiCo 2 S 4 , which by using GO and metal organic framework (ZIF-67) as the template and precursor. Additionally, the presence of GO and ZIF-67 can increase specific surface area and provide active sites for redox reactions and shortens ion transport pathways. The synthesized of rGO-10/NiCo 2 S 4 has excellent electrochemical properties as electrode material, which has a high specific capacity of 171 mAh g −1 and 121.9 mAh g −1 (1 A g −1 and 10 A g −1 ). The as-obtained rGO-10/NiCo 2 S 4 //AC asymmetric supercapacitor (ASC) of power density is 870 W kg −1 when the specific energy 41 Wh kg −1 , and with 88.2 % capacitance retention after 5000 cycles at 5 A g −1 . Therefore, the rGO-10/NiCo 2 S 4 derived from ZIF-67 as electrode materials for high-performance asymmetric supercapacitors has a good prospect.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Biomaterials Science & Engineering
·
2021
·
IF 4.749
Jiarui Wu,Zhanjie Zhang,Chenxu Qiao,Changfeng Yi,Zushun Xu,Tianyou Chen,Xiaofang Dai
In recent years, the combination treatment of chemotherapy and photothermal therapy (PTT) has emerged as an efficient approach to improve anticancer activity. Here, we combine zeolitic imidazolate framework-67 (ZIF-67) and CuSe to build a multifunctional therapeutic platform (ZIF-67@CuSe@PVP) with an efficient chemo-photothermal therapy for cancer treatment. ZIF-67@CuSe@PVP nanoparticles were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), dynamic light scattering (DLS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–vis, Fourier transform infrared (FT-IR), and nitrogen adsorption–desorption isotherms. These nanoparticles exhibited excellent pH-responsive doxorubicin hydrochloride (DOX) releases due to the decomposition of ZIF-67 and excellent photothermal conversion efficiency (36%) without apparent deterioration during three cycles. In vivo biodistribution evaluation revealed the passive tumor-targeting ability of ZIF-67@CuSe@PVP@DOX via the enhanced permeability and retention (EPR) effect. Both in vitro and in vivo data demonstrated excellent anticancer efficacy of ZIF-67@CuSe@PVP in tumor-bearing mice. This multifunctional therapeutic platform could have certain clinical application potential.
研究领域:
纳米医学
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肿瘤学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Junya Wang,Chenxi Ma,Shikun Wen,Ping Ning,Yu Zhang,Yi Liu
This study synthesized a composite material of ZIF-67 and black titanium (BT) with high CO 2 reduction capability via a mechanochemical method. Through in-depth analysis of the morphology, structure, optical properties, and electrochemical behavior of the ZIF-67-BT composite photocatalyst, it was confirmed that the composite successfully formed an S-scheme heterojunction structure. This configuration can effectively separate photogenerated charge carriers, resulting in superior CO 2 reduction performance. The findings indicate that the composite material has optimal catalytic performance when the ZIF-67 doping content reaches 30 wt% (30 %ZIF-BT). Within 5 h, 30 %ZIF-BT exhibited excellent photocatalytic activity, with CO and H 2 yields reaching 2486.4 μmol·g −1 and 3495.0 μmol·g −1 , which were 44.0 and 29.4 times greater than the yields of BT, and 2.4 and 1.4 times than ZIF-67. The syngas (comprising CO and H 2 ) generated by ZIF-BT, with an adjustable CO to H 2 ratio ranging from 1:1.40 to 1:2.47, is regarded as a significantly beneficial and crucial intermediate for further conversion into valuable hydrocarbon fuels via Fischer-Tropsch synthesis. This research offers a feasible method to construct S-scheme heterojunction in ZIF-BT composite materials.
研究领域:
材料科学
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环境科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 8
·1833
·
IF 4.2
Chen Cheng,Hanyan Wu,Xinyang Chen,Shuiping Cai,Yingkang Tian,Xiaofei Yang,Xuejie Gao
Lithium–sulfur (Li-S) batteries have received much attention due to their high energy density and low price. In recent years, alleviating the volume expansion and suppressing the shuttle effect during the charge and discharge processes of Li-S batteries have been widely addressed. However, the slow conversion kinetics from polysulfide (LiPSs) to Li2S2/Li2S still limits the application of Li-S batteries. Therefore, we designed a ZIF-67 grown on cellulose (named ZIF-67@CL) as an electrocatalyst to improve the interconversion kinetics from LiPSs to Li2S2/Li2S for Li-S batteries. Based on the results of adsorption experiments of LiPSs, ZIF-67@CL and CL hosts were immersed in Li2S4solution to adsorb LiPSs, and the UV-Vis test was conducted on the supernatant after adsorption. The results showed that the ZIF-67@CL had a stronger adsorption for LiPSs compared with the cellulose (CL). Furthermore, in the Li2S nucleation tests, the fabricated cells were galvanostatically discharged to 2.06 V at 0.112 mA and then potentiostatically discharged at 2.05 V. Based on the results of Li2S nucleation tests, the catalytic effect of ZIF-67 was further verified. As a result, the sulfur cathode used a ZIF-67 catalyst (named S/ZIF-67@CL) and delivered an initial capacity of 1346 mAh g−1at a current density of 0.2 C. Even at a high current density of 2 C, it exhibited a high-capacity performance of 1087 mAh g−1on the first cycle and maintained a capacity output of 462 mAh g−1after 150 cycles, with a Coulombic efficiency of over 99.82%.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Yunpeng Ju,Wenhao Huang,Zhen Gao,Mingquan Liu,Naibao Huang
Effective bifunctional electrocatalysts for Oxygen reduction reaction and Oxygen evolution reaction (ORR and OER) are key for fuel cells and water electrolysis. Co-based dodecahedral bifunctional catalysts, rich in Co-N, pyridinic nitrogen, and metallic cobalt nanoparticles, were synthesized by pyrolysis of ZIF-67. The obtained ZIF-67–6 catalyst showed an onset potential of 0.90 V, a half-wave potential of 0.83 V (vs. RHE), a limiting diffusion current density of 5.24 mA cm⁻² for ORR, and an overpotential of 1.50 V (vs. RHE) at 10 mA cm⁻² for OER. These values are comparable to those of commercial 20 % Pt/C (0.89 V onset potential, 0.83 V half-wave potential, and 4.27 mA cm⁻² limiting diffusion current density) and IrO₂ (1.53 V overpotential at 10 mA cm⁻²). The catalyst maintained 92.11 % of its current density after polarizing at 0.80 V for 10,000 s. ZIF-67–6′s high performance and stability are attributed to the porous structure from MOF pyrolysis, the deposited cobalt nanoparticle, and the higher Co-N and the pyridinic nitrogen content. This work offers a practical method to produce nitrogen- and cobalt-rich bifunctional electrocatalysts with dodecahedral structures.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 35
·e202402650
·
IF 1.9
Xinyi Wang,Zihan Cheng,Yuting Liu,Li Wang,Lili Chen
Graphical In the study, Mn-functionalized ZIF-67 (Mn@ZIF-67) hybrid material was synthesized using a post-synthesis modification method. Its oxidase-like catalytic activity effect enabled this material to directly oxidize colorless TMB into blue oxTMB without the presence of H 2 O 2 . This color change provided a means for the detection of Art and AA. The work also demonstrated the practical application of this method in analyzing real samples containing AA or Art. Artemisinin (Art) is the first-choice medicine for treating malaria. It also shows good therapeutic effects in antibacterial and antitumor treatment. Therefore, a simple and efficient method for detecting Art is of great significance. Mn-functionalized ZIF-67 (Mn@ZIF-67) hybrid materials were synthesized using a post-synthesis modification method. Due to the introduction of Mn 2+ , Mn@ZIF-67 possesses higher peroxidase/oxidase like dual-mimic enzymes activity than ZIF-67, which can catalyze Art and generate peroxyl radicals. Based on this fact, Mn@ZIF-67 was used to detect Art in the presence of TMB. A good linear relationship between absorption intensities at 652 nm and Art concentrations was obtained in the range of 0–22 μM with a detection limit of 200 nM. Ascorbic acid (AA), due to its reducibility, can inhibit peroxidase/oxidase mimetics activity of Mn@ZIF-67 and the blue Mn@ZIF-67-TMB solution fades gradually with the addition of AA. Mn@ZIF-67-TMB acting as a colorimetric sensor, AA can be sensitively detected ranging from 0–30 μM, and the detection limit is 50 nM. Coexisting substances don't interfere with the detection of Art or AA. This sensing platform provides a highly sensitive and selective colorimetric method for monitoring AA and Art in serum, thereby demonstrating remarkable practicality.
研究领域:
材料科学
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医学
·
药物分析
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Xiaoxiao Chen,Mengyao Liu,Lijuan Zhang,Yunshan Zhou,Enming Ping,Chunyan Ding
ZIF-67@NH 2 –SiO 2 composites were prepared by loading the metal-organic frameworks ZIF-67 on amino modified SiO 2 gel particles (NH 2 –SiO 2 , 80–100 mesh) through layer-by-layer self-assembly method. Systematic investigation on the effects of ZIF-67 loading amounts on NH 2 –SiO 2 packed stainless steel chromatographic column (specification 1.0 m×2.0 mm I.D.), the flow rate of He as carrier gas and the injection amount of mixed gas (H 2 /D 2 ) on the hydrogen isotope H 2 /D 2 separation performance at liquid nitrogen temperature, unraveled the optimal conditions for H 2 /D 2 isotope separation . The results showed that the optimal stationary phase materials under the optimized conditions can effectively separate H 2 and D 2 with separation resolution R = 1.52 and the separation time t = 10.15 min. The superior performance of the ZIF-67 is tentatively thought to be due to kinetic quantum sieving (pore size 3.3 Å) effect and chemical affinity sieving effect of Co ion in ZIF-67.
研究领域:
分析化学
·
材料科学
✓ 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）