Materials Today Physics
·
2023
·
IF 11.5
Hongjing Wang,Wenjie Zhan,Hongjie Yu,Shaojian Jiang,Beibei Wang,Kai Deng,Ziqiang Wang,You Xu,Liang Wang
The global plastic pollution problem has seriously affected the survival of natural and human organisms. Electrochemical polyethylene terephthalate (PET) plastic reforming powered by renewable electricity, is expected to provide an environmentally friendly, convenient, and efficient way to recycle plastics. Herein, we synthesized a heterostructure array catalyst of nitrogen-doped Ni 3 P–NiMoO 4 on nickel foam (N–Ni 3 P–NiMoO 4 /NF) for coupling PET waste plastic electro-recycling and hydrogen production . Due to the rich catalytic active sites provided by the heterogeneous interface structure , N–Ni 3 P–NiMoO 4 /NF can achieve a low hydrogen evolution overpotential of 142 mV with a current density of 100 mA cm −2 . The PET hydrolysate-containing electrolyte had a potential of 194 mV lower than that of conventional water splitting at a current density of 100 mA cm −2 and catalyze the conversion of PET hydrolysate to formate efficiently with a maximum Faraday efficiency of 92.2%. This work provides a new strategy and approach for upcycling resource utilization and energy-saving hydrogen production of PET waste plastic.
研究领域:
环境科学
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材料科学
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能源工程
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 15
·9419-9433
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IF 4.22
Xuan Haicheng,Wang Rui,Yang Jing,Zhang Guohong,Liang Xiaohong,Li Yuping,Xie Zhigao,Han Peide
Currently, substantial attention has been concentrated on the preparation and practical application of complex hierarchical nanostructure composite, which exhibits excellent electrochemical properties compared to the single-structured materials. Hence, a novel electrode of NiMoO 4 @Co 3 O 4 –5H composite nanoarrays supported on reduced graphene oxide/Ni Foam (rGO/NF) was synthesized through the facile hydrothermal method. The composite combines the advantages of the large specific capacitance of NiMoO 4 and the great rate capability of Co 3 O 4 , exhibiting the distinguished specific capacitance and rate performance. The prepared NiMoO 4 @Co 3 O 4 –5H composite shows an enhanced pseudocapacitive performance of about 1722.3 F g −1 at a current density of 1 A g −1 , and eminent rate capability of 80.8% at 10 A g −1 . Moreover, the composite delivers good long-term cycling stability with capacitance retention of 91% after 6000 cycles. An asymmetric supercapacitor (ASC) was fabricated using NiMoO 4 @Co 3 O 4 –5H and AC as the positive electrode and negative electrode, achieving the high energy density of 37.1 Wh kg −1 at a power density of 798.0 W kg −1 , and exceptional cycling stability (100% retention after 4000 cycles). These consequences suggest that NiMoO 4 @Co 3 O 4 –5H could be considered as a potential electrode material for energy storage devices. Graphical abstract
研究领域:
材料科学
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能源存储技术
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纳米材料
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Junfeng Lin,Ran Li,Yunqin Hu,Fei Duan,Mingyue Li,Caihong Fang,Zhiqing Cui
Herein, we grew in situ Co-incorporated NiOSO 4 –NiMoO 4 heterostructures on nickel foam (Co-NiSMoO/NF). The introduction of S 2− and MoO 4 2− into CoNi-ZIF precursor leads to the compositional and electronic reconstruction, resulting in the Co-NiSMoO/NF nanostructures. The attractive features in the morphology, composition, and electronic structure cooperatively endow them with high electrocatalytic performances. As a result, the Co-NiSMoO/NF nanostructures exhibit superior electrocatalytic performances to oxygen evolution, urea oxidation, and thus overall water/urea splitting reactions (OER/UOR/OWS/OUS). Specifically, the Co-NiSMoO/NF shows a high electrocatalytic OER activity, with low overpotentials of 172 mV@10 mA cm −2 , 238 mV@20 mA cm −2 , 278 mV@50 mA cm −2 , 308 mV@100 mA cm −2 in alkaline. For UOR, the overpotential is just as low as 1.318 V@10 mA cm −2 , 1.330 V@20 mA cm −2 , 1.346 V@50 mA cm −2 , and 1.401 V@100 mA cm −2 . Especially, the voltage of the record cell even drops to 1.446 V@10 mA cm −2 to OUS. Furthermore, the Co-NiSMoO/NF electrocatalysts still stable to OER, UOR, and OUS even for up to 100 h. More importantly, we also realized H 2 production in a green manner driven by solar. Under solar illumination on a solar panel, H 2 production speed is even as high as 408 L h −1 m −2 .
研究领域:
材料科学
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电化学
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能量转换
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催化
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可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2019
·Vol. 144
·期 16
·4925-4934
·
IF 4.019
Palanisamy Kannan,Fangshuai Chen,Huasheng Jiang,Hui Wang,Rongfang Wang,Palaniappan Subramanian,Shan Ji
Designing highly active electrode is important for the fabrication of electrochemical sensing platforms, and core–shell nanostructures with large specific surface areas and ease of accessibility are effective probes for the detection of biomolecules. In this work, we report the development of hierarchical core–shell Ni3S2/NiMoO4 nanowires on a nickel foam substrate (Ni–Ni3S2/NiMoO4) as a non-noble metal catalyst electrode for the electrochemical oxidation of glucose in alkaline electrolyte. As an electrochemical sensor for glucose detection, the fabricated hierarchical Ni–Ni3S2/NiMoO4 core–shell nanowires display an enhanced catalytic response, a fast response time of 1 s with a limit of detection (LOD) of 0.055 μM (S/N = 3), and a higher sensitivity of 10.49 μA μM−1 cm−2. Unlike Ni3S2 or NiMoO4 electrodes, the observed superior catalytic activity towards glucose is mainly due to the promotional effect of NiMoO4 nanosheets on the Ni3S2 nanowires, which can increase the large active surface area and generate numerous active sites within and on the surface walls of the nanowire structures. The developed Ni–Ni3S2/NiMoO4 nanowire electrode can selectively detect glucose in the presence of other carbohydrates, such as fructose, sucrose, lactose, maltose, galactose, mannose, and xylose, indicating potential anti-interference properties. The Ni–Ni3S2/NiMoO4 nanowire electrode is highly stable for reuse and its practical application is demonstrated using real blood serum samples. These results demonstrate that hierarchical core–shell Ni3S2/NiMoO4 nanowires show potential for application in the development of low-cost applied glucose sensors.
研究领域:
生物医学工程
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电化学传感
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纳米材料科学
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临床检验学
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糖尿病监测
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转化医学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Junrong Zeng,Wenhao Chen,Gaowei Zhang,Shuhan Yang,Liang Yu,Xing Cao,Huanhui Chen,Ya Liu,Lijuan Song,Yejun Qiu
Coupling hydrogen evolution reaction (HER) with urea oxidation reaction (UOR) can significantly reduce the cell voltage, but also alleviate the environmental pollution caused by urea. We prepared NiMoO 4 nanocrystals (NC) in situ and cooperated with the hydrodynamics effect of nickel-micro tubes (NT), so that nanocrystals growing inside and outside the tube wall can fully react with electrolyte under the effect of flow field during the process of liquid flow, and achieve the best catalytic activity. Significantly, NiMoO 4 NC 400 /NT as electrode in coupled system achieving an ultralow cell voltage. And DFT calculations suggested a lattice oxygen involved urea oxidation reaction pathway with Ni-Mo site as the active site. Our approach can give a straightforward synthesis method for in-situ nanocrystal preparation, as well as break the shackles of standard water electrolysis and provide a new way to produce energy-saving hydrogen.
研究领域:
材料科学
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电化学
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催化
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可再生能源
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·Vol. 60
·期 34
·14998-15011
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IF 3.9
Yu Zhou,Jiang Qin-Fu,Song Sheng-Nan,Liu Jin-Shan,Dong Yu-Wei,Ren Yu
Developing an efficient non-noble metal catalyst to accelerate the oxygen evolution reaction (OER) is essential for enabling the widespread use of electrochemical water splitting. In this work, we proposed a strategy of anion–cation dual doping to fabricate Fe and S dual-doping NiMoO 4 one-dimensional nanorods on nickel foam (Fe-NiMoO 4 -S/NF) through a simple preparation method. The combination of experimental results and theoretical calculations demonstrates that the simultaneous incorporation of both Fe and S can effectively regulate morphology and electronic structure, enhance charge transfer, increase the exposure of active sites, and optimize the adsorption of OER intermediates. The optimized Fe-NiMoO 4 -S/NF reveals excellent OER activity and structure stability, achieving a low overpotentials of 255 mV at 50 mA cm⁻ 2 in alkaline solution (1.0 M KOH) and 292 mV at 50 mA cm⁻ 2 in simulated alkaline seawater (1.0 M KOH + 0.5 M NaCl). Furthermore, the Fe-NiMoO 4 -S/NF maintains robust stability at high current density for 100 h and has small Tafel slopes of 66.0 and 78.1 mV dec⁻ 1 in alkaline solution and simulated alkaline seawater, respectively. In addition, overall water splitting at 10 mA cm⁻ 2 is achieved with an exceptionally low cell voltage of 1.54 V using the Fe-NiMoO 4 -S || Pt/C configuration. Thus, this study provides a significant guideline for the development of non-noble metal OER electrocatalysts through anion–cation dual-doping strategy. Graphical abstract A novel Fe and S dual-doped NiMoO4 one-dimensional nanorods on nickel foam (Fe-NiMoO4-S/NF) were designed for boosting the oxygen evolution reaction activity.
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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纳米技术
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能量转换
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 47
·17774-17784
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IF 4.39
Fangfang Wang,Zihao Liu,Kuanjian Zhang,Qingqing Zha,Yonghong Ni
Developing active, durable, and inexpensive electrocatalysts for the oxygen evolution reaction (OER) is drawing increased interest. Here, a mild hydrothermal–electrodeposition two-step route is designed for the preparation of Ce-doped Ni–S@NiMoO4 micropillar composites on nickel foam (CeNiS@NiMoO4/NF). The as-constructed CeNiS@NiMoO4/NF electrode shows an ultralow overpotential, fast kinetics, superb intrinsic activity and excellent long-term stability for the OER. In 1 M KOH solution, 187 mV overpotential is required to deliver a current density of 10 mA cm−2 with a Tafel slope of 35.28 mV dec−1, and in a saline-alkaline solution of 1 M KOH and 0.5 M NaCl, only 260 mV overpotential is needed to reach 100 mA cm−2, demonstrating its excellent OER performance. The above outstanding electrocatalytic activity is attributed to the influence of CeNiS nanosheets on the surface microstructure of NiMoO4 micropillars, which not only improves the conductivity of the catalyst, but also increases the surface area, as well as accelerates the escape of gases produced. Compared with other non-precious metal OER electrocatalysts, the as-prepared CeNiS@NiMoO4/NF presents stronger or close electrocatalytic activity and better durability, which provides a new electrocatalyst selection in practical applications.
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
ACS Nano
·
2024
·
IF 15.8
Kai Zhang,Qingmei Su,Weihao Shi,Yvjie Lv,Rongrong Zhu,Zhiyong Wang,Wenqi Zhao,Miao Zhang,Shukai Ding,Shufang Ma,Gaohui Du,Bingshe Xu
The design and synthesis of efficient, inexpensive, and long-term stable heterostructured electrocatalysts with high-density dislocations for hydrogen evolution reaction in alkaline media and seawater are still a great challenge. An amorphous/crystalline/amorphous sandwiched structure with abundant dislocations were synthesized through thermal phosphidation strategies. The dislocations play an important role in the hydrogen evolution reactions. Copious dislocation defects, combined with cracks, and the synergistic interfacial effect between crystalline phase and amorphous phase regulate the electronic structure of electrocatalyst, provide more active sites, and thus endow the electrocatalysts with excellent catalytic activity under alkaline water and seawater. The overpotentials of P–NiMoO4 at 10 mA/cm2 in 1 M KOH aqueous solution and seawater are 45 and 75 mV, respectively. Additionally, the P–NiMoO4 electrocatalyst exhibits long-term stability over 100 h. This study provides a simple approach for synthesizing amorphous/crystalline/amorphous sandwiched non-noble-metal electrocatalysts with abundant dislocations for hydrogen evolution reaction.
研究领域:
材料科学
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电化学
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催化
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能源材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Electronic Materials
·
2024
·
IF 4.3
Hong Zhang,Peihua Jin,Kaige Pang,Yi Jiang
Flexible piezoresistive pressure sensors have received much attention due to their potential for applications in personalized real-time health detection, human-computer interaction, and the Internet of Things (IoT). However, achieving a fast response and high sensitivity while keeping the cost low remains a key concern for researchers. In this paper, we simulated the spiky surface of hedgehog skin by hydrothermal growth of nickel molybdate on a carbonized sponge. Based on this, the MXene material was compounded by a process of immersion and sonication, and thus the MXene/NiMoO4@CMF (MNC) was successfully prepared. After assembly into an MNC piezoresistive pressure sensor, it shows good performance. In terms of sensitivity, the sensitivity is 31.1 kPa–1 in the pressure range of 0–10 kPa, 15.7 kPa–1 in the range of 10–15 kPa, and 3.3 kPa–1 in the range of 15–64 kPa. Moreover, it also has a fast response capability (500 ms) and excellent cyclic stability (95.7%). In addition, we integrated the MNC sensor with the ESP8266 WiFi Module IoT Development Board and an autonomously programmed UI interface. Therefore, it is capable of monitoring human health in real time and displaying abnormal statuses in the UI interface when the test value is outside the normal range. In summary, based on its high sensing performance and integrated application, the MNC sensor has a wide range of potential applications in wearable devices, IoT, and health monitoring.
研究领域:
材料科学
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生物医学工程
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Caihong Fang,Ran Li,Xin Wang,Fei Duan,Junfeng Lin,Yunqin Hu,Zhiqing Cui
The heterogeneous nanoparticles−nanorod Ni−NiMoO 4 nanostructures grown in situ on nickel foam (Ni−NiMoO 4 /NF) were rationally engineered as efficient electrocatalysts. The morphological and compositional features cooperatively propel high-performance electrocatalysis to hydrogen evolution reaction (η 10 , η 100 , and η 200 values are 26/84/113 mV in fresh water and 27/101/132 mV in seawater), urea oxidation reaction (η 10 , η 100 , and η 200 values are 1.321/1.340/1.356 and 1.329/1.344/1.361 V in fresh/seawater). The Ni−NiMoO 4 /NF nanostructures therefore perform a low cell voltage of 1.506/1.509@10 mA cm −2 in fresh/sea water. Specifically, the record cell voltage even drops to as low as 1.339/1.361 V in fresh/sea water for overall urea splitting (OUS) reaction with a long-term stability for 240 h@100 mA cm −2 toward OUS in seawater. More importantly, to realize a green manner, we also evaluated a solar-driven H 2 production. Even in seawater, H 2 gas was collected in high speed under solar illumination on a commercial solar panel.
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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可再生能源
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Xiaoyu Zhang,Xuan Wang,Ying Cao,Chengyang Liang,Shitong Geng,Haipeng Guo,Ying Liu,Yanhong Luo,Wenming Zhang,Ling Li
A porous coating structure transition metal oxide ZnCo 2 O 4 @NiMoO 4 composite was successfully synthesized on the surface of carbon paper (CP) by a simple two-step hydrothermal method as a Pt-free material for titanium mesh substrate counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). According to BET test results, the material has a high specific surface area, which can provide abundant active sites for the redox reaction of electrolytes to enhance the utilization rate of sunlight by DSSCs, and the composite materials show remarkable electrocatalytic performance in reducing iodine electrolytes and improving the photoelectric conversion efficiency (PCE) of DSSCs. Therefore, the DSSCs equipped with ZnCo 2 O 4 @NiMoO 4 /CP material CEs achieve a PCE of 9.30 % (with J sc of 20.51 mA·cm −2 , V oc of 0.763 V, and FF is 0.60), which is much higher than that of Pt CEs (7.36 %) under the same light conditions. This is due to the excellent catalytic ability and good electrical conductivity of the composite material. On the other hand, because the titanium mesh can increase the contact area between the electrode material and the substrate compared with the FTO substrate, and the titanium mesh has good electrical conductivity, it can enhance the diffusion ability of I - / I 3 - to accelerate electron transmission.
研究领域:
材料科学
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电化学
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太阳能
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Shijun Xu,Yi He,Siming Yan,Teng He,Hongjie Li,Yuan Gao,Wen Chen,Jin Yan,Guiyang Wu,Xi Yuan
This article elucidates the synthesis of NiMoO 4 -based catalysts with different arrays and crystal structures, including nanowires (nw), nanoplates (ns), and nanocolumns (nc). Subsequently, a high-temperature phosphorization method was employed to generate the corresponding P-NiMoO 4 catalysts. The study investigates the structural evolution of the catalysts and changes in the active species under operational conditions. Concurrently, density functional theory (DFT) calculations provide a more in-depth description of the HER reaction mechanism, considering d-band centers and adsorption energies. Experimental results demonstrate that phosphorized NiMoO 4 with a nanowire array structure and crystal structures of NiMoO 4 and MoO 3 exhibit the optimal HER performance, displaying superhydrophilic and underwater superaerophobic behaviors. The hydrophilic contact angle is 0°, and the aerophobic contact angle is 156.8° This array electrode achieves a current density of 10 mA·cm −2 at an overpotential as low as 73.97 mV. The experiments indicate that through doping and morphology control engineering, catalytic performance can be further synergistically enhanced, providing a new perspective for preparing HER catalytic electrodes with potential applications.
研究领域:
材料科学
·
催化化学
·
理论计算
✓ 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）