Journal of Energy Chemistry
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2023
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IF 13.1
Zhiyang Huang,Miao Liao,Shifan Zhang,Lixia Wang,Mingcheng Gao,Zuyang Luo,Tayirjan Taylor Isimjan,Bao Wang,Xiulin Yang
Tackling the problem of poor conductivity and catalytic stability of pristine metal-organic frameworks (MOFs) is crucial to improve their oxygen evolution reaction (OER) performance. Herein, we introduce a novel strategy of dysprosium (Dy) doping, using the unique 4 f orbitals of this rare earth element to enhance electrocatalytic activity of MOFs. Our method involves constructing Dy-doped Ni-MOF (Dy@Ni-MOF) nanoneedles on carbon cloth via a Dy-induced valence electronic perturbation approach. Experiments and density functional theory (DFT) calculations reveal that Dy doping can effectively modify the electronic structure of the Ni active centers and foster a strong electronic interaction between Ni and Dy. The resulting benefits include a reduced work function and a closer proximity of the d -band center to the Fermi level, which is conducive to improving electrical conductivity and promoting the adsorption of oxygen-containing intermediates. Furthermore, the Dy@Ni-MOF achieves superhydrophilicity, ensuring effective electrolyte contact and thus accelerating reaction kinetics. Ex-situ and in-situ analysis results manifest Dy 2 O 3 /NiOOH as the actual active species. Therefore, Dy@Ni-MOF shows impressive OER performance, significantly surpassing Ni-MOF. Besides, the overall water splitting device with Dy@Ni-MOF as an anode delivers a low cell voltage of 1.51 V at 10 mA cm −2 and demonstrates long-term stability for 100 h, positioning it as a promising substitute for precious metal catalysts.
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高影响因子
LANGMUIR
·
2024
·
IF 3.7
Xu Chuan Cao,Bai Chao Zhang,Jing Cui,Chao Suo,Xiao Chuan Duan,Shao Hui Guo,Xian-Ming Zhang
Plasmonic materials are fundamental photosensitizer materials for photocatalytic reactions. Various structures, including core–shell types, satellite types, and distribution types, have been designed and prepared for the optimization of photocatalytic reactions. However, understanding the profound enhancement mechanism of various structures is still challenging. Thus, the plasmonic coverage is considered to be an index for analyzing the influence mechanism. Here, Au@Ni-MOF core–shell flower sphere-like photocatalysts are prepared, and the size of the flower sphere can be precisely regulated by varying the amount of Au. Thus, different plasmonic coverages are realized through the tuning of spheres of different sizes. The high plasmonic coverage of catalysts can enhance visible light absorption, facilitate the generation of photogenerated electron–hole pairs, and shorten the photogenerated carrier transport distance. Moreover, the exponential relationship between the photocatalytic hydrogen production performance and the plasmonic coverage can also be used as a guide for material design. As a result, a photocatalytic hydrogen production rate of 3389 μmol·g–1·h–1 is achieved in the Au@Ni-MOF sample with high plasmonic coverage, which will advance the plasmonic application in photocatalytic reactions.
研究领域:
材料科学
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纳米技术
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催化
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光化学
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
·
IF 5.316
Lin Cheng,Min Xie,Yitong Sun,Hong Liu
Constructing Z-scheme heterojunction is considered to be a promising strategy to isolate photogenerated carriers and boost the activity of the photocatalysts . Here in, a novel Z-scheme Bi 2 WO 6 /Ni-MOF heterojunction with intimate interface was constructed via wrapping flowerlike Bi 2 WO 6 on 2D Ni-MOF sheets. The resultant Bi 2 WO 6 /Ni-MOF heterojunction displayed superior photocatalytic performance with respect to methylene blue degradation under visible light illumination. When the content of Ni-MOF was 20 wt%, the Bi 2 WO 6 /Ni-MOF heterojunction achieved the highest activity, which was 24.0 and 6.4 folds that of the pristine Ni-MOF and Bi 2 WO 6 , respectively. The superior degradation performance was caused by the formation of a direct Z-scheme heterostructure between Ni-MOF and Bi 2 WO 6 , which boosted the separation of photoinduced carriers. The principal active species and possible photocatalytic mechanism were also explored. This study provides a pathway to design and fabricate efficient Z-scheme photocatalysts for environmental remediation.
研究领域:
材料科学
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环境化学
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光催化
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纳米材料
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功能材料
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Yongyan Xue,Jing Chen,Jinglin Gou,Jie Yang,Tuoping Hu,Jingjing Jiao,Xiao-Qing Wang
Achieving clean hydrogen energy requires the logical development of stable, high-performance, and inexpensive hydrogen evolution reaction (HER) electrocatalysts. Herein, a range of Ni-MOF@MoS 2 -X/NF (X = 0.05, 0.06, 0.10, 0.15, 0.20) heterogeneous electrocatalysts were constructed by anchoring MoS 2 nanosheets onto the surface of nickel-based metal-organic framework (Ni-MOF) material self-supported on nickel foam (NF) via weak interactions under a two-step solvothermal method, which exhibited flower-like microspheres with interconnected nanosheets. Compared with Ni-MOF/NF, Ni-MOF@MoS 2 -X/NF (X = 0.05, 0.06, 0.10, 0.15, 0.20) show prominent HER electrocatalytic property in 1.0 M KOH solution. Specifically, the optimal Ni-MOF@MoS 2 -0.15/NF exhibits better HER electrocatalytic property than the Pt/C catalyst, which has a lower overpotential of only 25 mV with the Tafel slope of 54.68 mV dec −1 at a current density of 10 mA cm −2 in alkaline solution. Furthermore, in natural seawater, an overpotential of 90 mV was required to drive the HER process at a current density of 10 mA cm −2 . The 60 h stability tests of Ni-MOF@MoS 2 -0.15/NF in natural seawater and 1.0 M KOH showed excellent endurance. Density functional theory (DFT) calculations indicate that the ΔG H∗ of Ni-MOF@MoS 2 (0.50 eV) is lower than that of Ni-MOF (0.96 eV). This work presents a novel approach to constructing effective HER catalysts made of non-precious metals in natural seawater.
研究领域:
电化学
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材料科学
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能源技术
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催化
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纳米技术
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高影响因子
ACS Applied Energy Materials
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2019
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IF 0
Yao Xiao,Wei Wei,Meijiao Zhang,Sa Jiao,Yuchuan Shi,Shujiang Ding
Metal–organic frameworks (MOFs) have emerged as one class of the most promising electrode materials for supercapacitors because of their high surface area and tunable pore structures. The development of MOF heterostructures based on high-quality graphene (HQG) which aims at superior capacitive properties while overcoming poor solution processability and reactivity of HQG is of great concern. In this work, a heterolayered MOF composite was prepared by a facile glucose modification of HQG and controlled nucleation and growth of lamellar Ni-MOF on the HQG surface. The introduction of oxygen-containing functionalities in our approach not only improves the interfacial interactions to form two-dimensional heterostructures but also enhanced the synergistic effects between Ni-MOF and HQG substrates. The constructed GM-LEG@Ni-MOF exhibits excellent capacitance of 987.6 F g–1 at the current density of 0.5 A g–1 and a high capacity retention (85.6%) after 3000 cycles, owing to its favorable electrochemical kinetics and highly structural stability.
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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储能
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DOI
JOURNAL OF ALLOYS AND COMPOUNDS
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2020
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IF 4.65
Yafeng Jin,Guangri Xu,Xiaobo Li,Jingjing Ma,Li Yang,Yuanchao Li,Huan Zhang,Zhen Zhang,Donghao Yao,Donghao Li
To circumvent the binder’s adverse effect on the performance of electrochemical sensor and improve the analysis efficiency, a binder-free cobalt-doped Ni-MOF (Co/Ni-MOF) film, with honeycomb-like structure, is fast electrodeposited on glassy carbon electrode (GCE) by cathodic reduction. No conductive agent added, the Co/Ni-MOF/GCE can be directly used as a sensor for levofloxacin (LEV) determination. Under the optimal condition, a wider linear range of 0.1 μM–500 μM LEV is obtained with the limit of detection (LOD, 3S/N) being 22 nM and the sensitivity of 2.85 μA μM −1 cm −2 . Further, when being used to analysis of LEV in eye drop and spiked milk, satisfactory recoveries of 94.0%–108.2% are achieved. Particularly, benefiting of the synergistic effect of Co 2+ and Ni 2+ , as well as and the binder-free film, the sensor exhibits an excellent sensitivity and a robust long-term stability. This work develops a facile and efficient strategy to synthesis of Co and Ni based MOF film, and provides them a new way in electrochemistry application.
研究领域:
分析化学
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电化学传感器
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
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IF 4.175
Zhiguo Zhang,Hua Huo,Jinlong Gao,Zhenjiang Yu,Feitian Ran,Lei Guo,Shuaifeng Lou,Tiansheng Mu,Xucai Yin,Qun Wang,Geping Yin
In this paper, NiO nanoparticles uniformly embedded in spherical carbon matix in situ grown on reduced graphene oxide (rGO) has been successfully fabricated via a simple pyrolysis of nickel metal organic framework (MOF) precursor self-assembled on graphene oxide. This interaction between the carbon and the NiO can significantly maximize the surface of NiO for pseudocapacitance, provide effective electronical transmission path and improve the ionic absorbability and conductivity. As a result, the NiO/C/rGO hybrid electrode demonstrates high specific capacity (496 C g −1 at current density of 1 A g −1 ) and good cycling stability. Moreover, a hybrid supercapacitor assembled by NiO/C/rGO and a hierarchical porous carbon derived from sodium citrate can deliver a high energy density of 35.9 Wh kg −1 at a power density of 749.1 W kg −1 , and extraordinary cycling stability (120% retention after 3000 cycles). It has been demonstrated that the carbon matrix derived from the linker molecules in Ni-MOF, which maintains close contact with both the size-controlled NiO nanocrystals and the electronic conductive rGO, is vital to synergize the electric double layer capacitance from the carbon materials and the battety-type behavior from NiO for high-performance energy storage.
研究领域:
材料科学
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能源存储
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Tingting Wei,Liyang Wang,Kaihui Mao,Jian Chen,Jun Dai,Zhiyong Zhang,Lizhe Liu,Xinglong Wu
Rapid recombination of photogenerated carriers severely impairs the performance of photocatalysts , while polarization is an effective driving force for increasing the charge separation and hence improving the photocatalytic activity . In this work, a series of magnetoelectric-coupled layered metal–organic framework (MOF) catalysts with different Co-doped contents (denoted as Ni-MOF and Co x Ni 1-x -MOF) are fabricated with different polarities and employed as novel photocatalysts for CO 2 photocatalytic reduction reaction. Our experiments show that the highest charge separation efficiency occurs in the Co 0.1 Ni 0.9 -MOF sample which has a maximal polarization. This Co 0.1 Ni 0.9 -MOF material has a best CO 2 reduction performance of 38.74 μmol g −1 h −1 which is at a high level in the currently reported layered materials. Meanwhile, it is found that a series of Co x Ni 1-x -MOF samples all display selectivity close to 100% for CO 2 reduction to CO, which is desirable for industrial applications. Theoretical analysis shows that Co doping alters the degree of distortion of the asymmetrical Ni-centered octahedron {NiN 2 O 4 } in Ni-MOF by replacing Ni due to the magnetoelectric coupling effect and Jahn-Teller effect, which results in adjustable polarity of Co x Ni 1-x -MOF. This work provides new insights on how to improve photogenerated charge separation in MOF by enhancing polarization.
研究领域:
材料科学
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催化
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化学
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环境科学
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DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
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2025
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IF 4.8
Kunpeng Song,Haojie Lin,Qing Guo,Fang Liao,Chunmei Zeng
ZnIn 2 S 4 is a semiconductor photocatalyst with a suitable band gap for renewable energy production. However, its efficiency in photocatalytic hydrogen evolution is limited by the rapid recombination of photogenerated charge carriers. In this study, a ZnIn 2 S 4 @Ni-MOF-74 heterojunction nanocomposite was designed and synthesized via an in-situ hydrothermal growth method. This unique structure promotes intimate interfacial contact between the two materials and ensures a well-aligned band structure. The optimized ZnIn 2 S 4 @Ni-MOF-74 composite achieves a photocatalytic hydrogen evolution rate of 1823.7 μmol·g −1 ·h −1 without the use of precious metal cocatalysts, significantly surpassing that of pristine ZnIn 2 S 4 . Cycling tests demonstrated that the photocatalyst maintains stable performance over 12 consecutive cycles without significant degradation. The enhanced photocatalytic activity can be attributed to the well-matched band alignment and intimate interfacial contact, which collectively facilitate the formation of a type-II heterojunction structure, thereby promoting efficient charge separation and migration.
研究领域:
材料科学
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光催化
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可再生能源
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纳米复合材料
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半导体物理
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2026
·Vol. 61
·期 34
·25602-25621
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IF 4.4
Li Han,Wang Baichen,Lu Shaowei,Li Wei
Researchers have developed a novel anticorrosion particle, denoted as CPAM@Co/Ni MOF@BTA (CMB). In this system, benzotriazole (BTA) acts as a corrosion inhibitor and is incorporated into the Co/Ni MOF framework through an in-situ host–guest nano-confinement strategy. Meanwhile, cationic polyacrylamide (CPAM) serves as cladding layer and is electrostatically assembled onto the surface of Co/Ni MOF@BTA. The composite coating was prepared by dispersing these particles into an epoxy resin matrix. In immersion tests, the coating was found to effectively enhance the corrosion resistance of Q235 steel in a sodium chloride medium, with impedance remaining as high as 2.24 × 10 5 Ω·cm 2 after 45 days of exposure. In polarization measurements, a corrosion current density as low as 5.294 × 10 –10 A/cm 2 was observed, indicating a pronounced anodic inhibition effect. In scratch tests, a distinct self-healing capability was also demonstrated. These results confirm that the incorporation of CMB particles significantly improves the passive corrosion resistance of epoxy coatings and imparts self-healing properties.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
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IF 7.8
Dandan Zhang,Hongjiang Li,Shushuai Zhu,Gajanan A. Bodkhe,Shoukun Yu,Chen Wang,Mulin Qu,Se Hyun Kim,Peng Liu,Xuan Li,Sang Woo Joo,Xinlin Li,Chenhao Cong
Noninvasive wearable glucose sensors capable of real-time sweat analysis offer a less discomforting alternative for long-term monitoring in patients with diabetes. However, practical implementation remains challenging. Major barriers include insufficient catalytic sensitivity to quantify the low glucose levels in sweat, limited compatibility between nanomaterial synthesis and scalable manufacturing processes, and the lack of a biofluid microenvironment suitable for enzyme-free electrochemical sensing. Here, we address these challenges by combining strong interfacial anchoring on a conductive template with surfactant-assisted growth control to engineer high-aspect-ratio (∼100) 1D Ni-TCPP MOF nanofibers as an active shell on MXene-NH2. In contrast to conventional electrospinning-assisted approaches, the resulting 1D MOF shell is polymer-template-free and thus avoids insulating scaffold components. The resulting fluffy, self-supporting Ni-MOF@MXene architecture is inherently compatible with printed electronics, enabling large-area fabrication of wearable enzyme-free glucose-sensing patches. To overcome the constraints of enzyme-free sensing in physiological biofluids, we further develop an integrated system that combines microfluidics with a NaOH/Nafion/PVA alkaline sustained-release membrane, establishing a localized alkaline microenvironment within sweat to enable continuous analysis.
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高影响因子
Journal of Environmental Chemical Engineering
·
2024
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IF 7.4
Aiting Chen,Nana Tang,Yanping Wei,Shuting Shi,Chuanqin Zhou,Quanguo He,Jianhua Ding
Uric acid (UA) levels are significant in the monitoring of human health, making their detection very important. In this paper, a simple and innovative electrochemical method for the detecting UA was established, using a sensing platform based on hybrid electrodes of Nickel-Metal Organic Framework (Ni-MOF) and carboxylated multi-walled carbon nanotubes (MWCNTs-COOH). Detailed investigations into the electrocatalytic activity of Ni-MOF/MWCNTs-COOH/GCE for The Ni-MOF/MWCNTs-COOH exhibited remarkable catalytic activity for UA oxidation . The detection limit was 0.005 μM, with a sensitivity calculation result of 6.377 µA µM −1 , and a wide linearity interval (0.03–10 μM, 10–300 μM). Utilizing its high sensitivity and selectivity , this sensor was used for the measurement of UA in biological fluids, including human serum and urine samples, recovery amounts being 96.6–100.8 %, and 98.9–101.3 %. This work is highly significant; offering new perspectives for the application of Ni-MOF based chemical sensors in the realms of environmental monitoring and healthcare.
研究领域:
医学
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材料科学
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分析化学
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高影响因子
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