FUEL
·
2024
·
IF 6.7
Lan Xiao,Jian Wen,Guanghui Wu,Pinghua Chen,Mengxue Wang,Hualin Jiang,Xinming Zhou,Jianan Yan
Rational design of efficient and low-cost oxygen evolution reaction (OER) electrocatalysts is a key challenge in the development of various clean energy technologies. Here, flower-shaped FeCo-MOF-74/Mn-MOF-74 (FeCo/Mn mass ratio x:y, denoted as FCMx-y) electrocatalysts were synthesized through a two-step simple solvothermal methods and applied to the OER. These synthesized OER catalysts exhibited effective synergistic effects, high conductivity, electrochemical active surface area, carrier density, enhancing the intrinsic activity of MOF-74. Among them, the optimized FeCo-MOF-74/Mn-MOF-74 (named FCM1-2) required only a low overpotential of 280/382 mV to achieve 10/300 mA cm −2 in 1 mol/L KOH, outperforming control samples and commercial IrO 2 . Furthermore, the catalyst demonstrated high electrocatalytic activity, rapid catalytic kinetics, and excellent stability. This research provides a reference for the industrial design of advanced OER electrocatalysts with high current density for sustainable energy technologies.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Hong Yao,Guozhe Sui,Jinlong Li,Dongxuan Guo,Jiaqi Wang,Yuanzhi Yue,Bing Jia,Xuan Xuan,Jing Tang
The construction of efficient Z-scheme heterojunctions is considered as a promising approach to improve the transfer and separation of photogenerated carries in the field of photocatalytic hydrogen evolution from water splitting. Herein, a novel ZnIn 2 S 4 /P-Ni-MOF-74 with Z-scheme heterostructure is successfully fabricated from rhombic P-Ni-MOF-74 derived from Ni-MOF-74 through phosphorization treatment and ZnIn 2 S 4 flakes via a hydrothermal method . The Z-scheme ZnIn 2 S 4 /P-Ni-MOF-74 heterojunctions can provide abundant active centers, broaden the response range to visible light region, accelerate the transfer of interfacial charges, and suppress the recombination rate of photogenerated electron-hole pairs. As a result, ZnIn 2 S 4 /P-Ni-MOF-74 (20 wt% P-Ni-MOF-74) acquires a hydrogen production rate of 7865.31 μmol g −1 h −1 , which is 4.46 times higher than that of ZnIn 2 S 4 . An apparent quantum yield is 7.84% at 420 nm wavelength. Overall, this work may provide a new pathway for the rational design of efficient Z-scheme heterojunctions with photocatalytic hydrogen evolution.
研究领域:
材料科学
·
能源科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 33
·11204-11212
·
IF 6.4
Zhimin Mao,Su-Yun Zhang,Duo Zhao,Xiaoliang Weng,Chenxu Kang,Hui Fang,Yu-Jia Zeng
The development of metal–organic framework (MOF) materials with multifunctionalities has boosted their prospects in the fields of spintronics and optoelectronics. However, incorporating magnetic and optoelectronic properties in MOF materials remains challenging. Herein, the in situ synthesis of Cu-MOF-74, a typical one-dimensional linear magnet, is systematically investigated, which shows ferromagnetic and antiferromagnetic interactions along the axial chain direction, and overall tilted antiferromagnetism at low temperatures. In particular, the introduction of SnS:Co quantum dots (QDs) enhances the antiferromagnetic coupling, which increases the phase transition temperature of the MOF from 7.8 K to 275 K at 1000 Oe. In addition, it is demonstrated that Cu-MOF-74 possesses both magnetic and optoelectronic properties. It is found that the responsivity and detectivity of the Cu-MOF-74 photodetector are both significantly improved by the SnS:Co QDs. This research provides promising methods for concurrent improvement of the magnetic and optoelectronic properties of MOF materials, advancing in-depth research on the MOF film as a new type of semiconductor for spintronic and optoelectronic devices.
研究领域:
材料科学
·
自旋电子学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
AICHE JOURNAL
·
2021
·Vol. 68
·期 3
·e17528
·
IF 3.993
Meng Zhao,Yujie Ban,Ze Chang,Yingwu Zhou,Kun Yang,Yuecheng Wang,Na Cao,Weishen Yang
A series of pyrazine-interior-embodied metal–organic framework-74 composites (py-MOF-74) were successfully synthesized by a post-synthetic vapor modification method. Here, pyrazine molecules occupy the cavity to block the wide pores of MOF-74, which accentuates the difference in adsorption of a pair of gases on MOFs and consequently reinforces the adsorption selectivity. Different from the “physical confinement” of occupants, the pyrazine molecule with dual “para-nitrogen” atoms donates one N atom to bond with the open metal ion of MOF-74 for stability and the other N atom for potential CO 2 trapping. Typically, py-MOF-74c with the highest pyrazine insertion ratio displays selectivity greatly superior to that of MOF-74 in equimolar CO 2 /CH 4 (598 vs. 35) and in simulated CO 2 /N 2 flue gas (471 vs. 49). Py-MOF-74 entities are long-lived adsorbents, and their CO 2 capacity can be maintained even after storage for 1 year in air. Py-MOF-74 also showed a sharp molecular sieve property in fixed-bed cycle adsorption tests, which implies its great potential in real applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Sustainability
·
2025
·Vol. 17
·期 7
·3060
·
IF 3.3
Junwei Feng,Gang Zhi,Xianjin Qi,Mengmeng Geng
Removing arsenic from industrial wastewater remains a crucial task. To protect public health and safety and address environmental pollution, there is an urgent need for a material that can efficiently remove arsenic from wastewater. In this study, a simple and highly efficient adsorbent, namely, a Co/Mn bimetallic-based organic framework (CoMn-MOF-74) adsorbent, was prepared by a hydrothermal synthesis method. Experimental results demonstrate that CoMn-MOF-74 exhibits excellent adsorption capacity for arsenic ions in wastewater. It was found that the optimal Co/Mn molar ratio of the adsorbent is 1:1. The CoMn-MOF-74 adsorbent compensates for the deficiencies in the adsorption performance of Co-MOF-74 and Mn-MOF-74, increasing the adsorption rate and the highest adsorption capacity. The maximum adsorption rate of CoMn-MOF-74 is 93.4%, and the highest adsorption capacity is 531 mg/g. Fitting CoMn-MOF-74 according to two categories of models, specifically, the adsorption isotherm and adsorption kinetics models, indicated that CoMn-MOF-74 adheres to the Langmuir model and pseudo-second-order kinetic model. The adsorption process is mainly chemical adsorption and monolayer adsorption. Analysis by XPS revealed that metal–oxygen groups and hydroxyl groups play important roles in the adsorption process. In conclusion, the CoMn-MOF-74 adsorbent shows excellent prospects in the field of arsenic adsorption from wastewater and is a promising arsenic-removing adsorbent.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 52
·33716-33724
·
IF 4.036
Jie Hu,Lei Li,Hao Li,Ying Zhai,Fushun Tang,Zhe Zhang,Banglin Chen
The mixed bimetal metal–organic framework Ni0.37Co0.63-MOF-74 has been constructed by the solvothermal method for NO adsorption. The results showed that bimetal Ni0.37Co0.63-MOF-74 takes up NO with a capacity of up to 174.3 cc g−1 under ambient conditions, which is 16.3% higher than that of the best single metal Co-MOF-74. The IAST adsorption selectivity for a NO/CO2 binary mixture can reach a maximum of 710 at low adsorption partial pressure, while the regeneration performance can be retained even after five cyclic adsorption–desorption experiments. Its separation performance was further confirmed by breakthrough experiments, indicating this new bimetal Ni0.37Co0.63-MOF-74 as one of the best materials for NO adsorption and separation in flue gas.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
IONICS
·
2025
·
IF 2.6
Du Jia,Chen Lixuan,Wu Yiming,Wei Xin,Jia Jingyuan,Sun Kenan,Li Bingke
Nowadays, the advancement of eco-friendly, clean, sustainable and renewable new energy has emerged as a research priority for scientists worldwide. Electrolytic water technology is founded on the principle of electrochemical or photoelectric decomposition of water, is deemed as one of the most promising and most feasible approaches to reach industrial production. Traditional OER (oxygen evolution reaction) electrocatalysts like IrO 2 and RuO 2 are beset by high costs and vulnerability to poisoning. Hence, it is essential to develop more economical, more stable and more efficient materials for the application of OER reactions. In this study, a series of AQ-doped (AQ = anthraquinone) MOF-74 materials were fabricated through a one-step solvothermal approach. The surface loading of the conjugated organic small molecule AQ on CoNi-MOF-74 is capable of effectively boosting the inadequate electrical conductivity of the bulk MOF material, thus significantly enhancing the performance of OER. The optimized ratio of material composition of AQ20@MOF-74 displayed significantly enhanced OER activity. with a lower overpotential of 272 mV at 10 mA cm −2 and a smaller Tafel slope of 78 mV dec −1 . The research findings presented in this thesis provide a novel approach for the design and optimization of highly efficient OER electrocatalysts based on MOFs.
研究领域:
材料科学
·
能源化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
BingTao Gui,Jun Liu,Cheng Wang,Shilong Shi,Junxiang Shu,PingPing Ding,Juan Zhai,Changsong Zhao
CTAB/Bent-MOF-74 was synthesized via hydrothermal method to investigate its U(VI) sorption in carbonate solutions. Generally, CTAB/Bent-MOF-74 (∼87.6 mg·g −1 ) showed better sorption capacity than CTAB/Bent-MOF-71 (∼64.2 mg·g −1 ) and CTAB/Bent-CS-35 (∼81.4 mg·g −1 ) in U(VI)-Cl coexist carbonate solutions when pH = 8.0, [NaHCO 3 ] =2 mmol·L −1 , [NaCl] =0.1 mol·L −1 and [U(VI)] =50 mg L −1 . The competitive sorption between HCO 3 − /CO 3 2− , OH − , halide ions and U(VI) complexes ions as well as the weakened electrostatic attraction decreased the composite's uranium sorption efficiency and capacity at high pH initial , NaHCO 3 , phosphate, Ca/Mg and halide ions concentrations. The pseudo-second-order kinetics and Langmuir models indicated a monolayer homogeneous chemisorption process. Besides, 0.1 mol·L −1 HCl shows the highest desorption efficiency among the selected desorbents, and the sorption rate is still high even after four times of desorption. In particular, the decreasing inhibitory capacity of the halide ions was on the order of I − , F − , Br − , Cl − . Characterization analyzes confirmed the good structural stability and Br anion exchange as well as the -OH/-COOH coordination and electrostatic attraction, which could be the predominant sorption mechanisms of U(VI) by CTAB/Bent-MOF-74. The results provided theoretical references for understanding the uranium sorption in natural uranium-containing water and designing potential uranium-extracting materials.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Xiaoqian Peng,Jing Zhang,Jinqiang Sun,Xiaochan Liu,Xinfu Zhao,Shimo Yu,Zhipeng Yuan,Sijia Liu,Xibin Yi
One of the most promising methods for capturing carbon dioxide (CO2) is solid physical adsorption, which is an efficient and simple technique. The key to effective CO2 capture is the development of high-performance solid adsorbents with excellent CO2 adsorption capacity, CO2/N2 selectivity, and rapid adsorption/desorption kinetics. In this paper, a Mg-MOF-74/sodium alginate composite aerogel was prepared by loading Mg-MOF-74 on sodium alginate sheets followed by directional freeze-drying. The composite aerogel exhibited a hierarchical porous structure, in which sodium alginate provided an open mesoporous/macroporous structure that promoted diffusion and contact with the active center of CO2. The Mg-MOF-74 micropores/mesopores promoted the strong interaction between CO2 and the adsorbent in the micropore and rapid mass transfer of CO2 to the adsorbent through the mesopores. The experimental data showed that MSA-6 achieved CO2 adsorption of 2.461 mmol·g–1 at 298 K. Furthermore, the CO2/N2 adsorption selectivity of MSA-6 reached 35.108, indicating its strong CO2 selective adsorption potential.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Zihao Hu,Xiaoying Zhou,Tiantian Zhang,Zuliang Wu,Jing Li,Wei Wang,Erhao Gao,Jiali Zhu,Shuiliang Yao
Catalytic combustion has been considered the effective way to oxidize carbon monoxide (CO). It is both crucial and challenging to develop highly-active monolithic catalysts at lower temperatures for industrial applications. This study synthesized a monolithic Co 3 O 4 /Mn 3 O 4 -NF catalyst by the generation of in-situ metal–organic framework (MOF-74)-derived Co 3 O 4 /Mn 3 O 4 on nickel foam (NF). The resulting Co 3 O 4 /Mn 3 O 4 -NF catalyst demonstrated superior low-temperature CO oxidation performance, and the T 90 temperature was 20 °C. The enhanced activity is associated with the increased oxygen vacancy concentration, abundant Co 3+ , Mn 2+ + Mn 3+ , and surface-adsorbed oxygen species (O ads ), as well as low-temperature reducibility. In addition, operando DRIFTS analysis revealed that the surface of this as-prepared catalyst possessed abundant terminal-type oxygen (M O), facilitating CO adsorption and catalytic oxidation. This pioneering study introduces a paradigm-shifting insight: the effectiveness of non-noble metal oxide catalysts can now compete with, and in some cases, outperform their noble metal counterparts. This breakthrough is set to transform the industry, presenting a compelling alternative to conventional noble metal catalysts and propelling the evolution of state-of-the-art environmental conservation technologies.
研究领域:
催化材料
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2024
·Vol. 14
·期 4
·383
·
IF 2.9
Chunling Xin,Shufen Hou,Lei Yu,Xiaojing Zhou,Yunkai Fu,Xiaoteng Yang,Weiwei Sun,Fan Yang,Xia Wang,Lili Liu
Yellow nanorod Mg-MOF-74 was obtained through a solvothermal synthesis method. The XRD, N2adsorption–desorption isotherms, SEM, and TGA results suggest that the particle size of Mg-MOF-74 reaches 400 nm after the introduction of sodium acetate in the precursor of Mg-MOF-74. Furthermore, the morphology of Mg-MOF-74 changed from cauliflower- to rod-shaped particles. At the same time, the BET specific surface area and pore volume of Mg-MOF-74 also increased a lot. Then, the CO2dynamic adsorption capacity of Mg-MOF-74 was measured with a self-made fixed bed at 30 °C and a 0.1 bar CO2partial pressure. The results show that the CO2adsorption capacity of Mg-MOF-74-N2 reaches 3.67 mmol/g, and its CO2adsorption capacity remains unchanged after 10 CO2adsorption–desorption cycles.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Shumin Wang,Qingping Guo,Shujun Liang,Peng Li,Jujie Luo
A series of mixed matrix membranes (MMMs) were fabricated with Ni-MOF-74 as filler and poly (styrene-b-butadiene-b-styrene) (SBS) polymer as matrix materials for CH 4 /N 2 separation. MMMs were characterized by Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Gas separation behavior was investigated by measuring single and mixed gases. For the single gas, the CH 4 permeability of the MMMs incorporated with 15 wt% Ni-MOF-74 (Ni-MOF-74/SBS-15) reached 83.5 Barrer, which was 116% higher than that of SBS (38.6 Barrer), while its ideal selectivity remained the same. CH 4 permeability can further increase to 176.6 Barrer with the increase in temperature to 55 °C. For the CH 4 /N 2 (50/50 vol%) mixed gas, the Ni-MOF-74/SBS-15 sample exhibited increasing CH 4 permeability (74.7 vs 36.7 Barrer), while selectivity remained unchanged relative to that of the pure SBS membrane.
研究领域:
材料科学
·
化学工程
✓ 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）