Inorganic Chemistry Frontiers
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2017
·Vol. 4
·期 4
·683-691
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IF 4.036
Xiongwei Wang,Ludan Zhang,Peiyi Wu
In this work, a novel nanocomposite with few-layered ultrasmall MoS2 nanosheets uniformly anchored on a three-dimensional (3D) flower-like carbon (FC) was designed and prepared, where zinc oxide was used as a sacrificial template to prepare a biomass-based FC skeleton by a hydrothermal method and subsequent high-temperature carbonization. When evaluated as an anode material for lithium ion batteries (LIBs), the three-dimensional FC matrix can not only improve the electronic conductivity of the hybrid, but also enable fast electrolyte diffusion to MoS2. The FC–MoS2 hybrid exhibits a high second reversible capacity of 1033 mA h g−1 at 0.2 A g−1, excellent cycling stability with negligible capacity loss after 200 cycles at 1.6 A g−1, and good rate performance. Additionally, the hybrid also shows enhanced electrocatalytic performance for hydrogen evolution. We believe that our method may provide a cost-effective and eco-friendly route to prepare 3D biomass-based composites for energy generation or storage.
研究领域:
材料科学
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能源存储与转换
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2023
·
IF 5.9
Rui Lou,Lingxuan Bai,Wei Zhang,Guiyun Huang,Zhe Zhang,Mingfang Wu,Can Wang,Hui Cai,Jiulong Sha
The urgent demand for stable, consistent, eco-friendly, and reliable power sources ultimately promotes the creation of new green energy materials. Due to their singular capacity of achieving efficient energy conversion between heat and power, nanoporous carbon-based thermally chargeable supercapacitors (TCS) have drawn interest due to their multiple applications in gathering of low-grade and waste heat. High-performance TCS is significantly influenced by the amount of active surface area and distribution of pore sizes of the electrode materials. Herein, the optimized porous flowery carbon made from enzymatic lignin has a high specific surface area of up to 897 m 2 g −1 , which gives it a promising thermal charging performance and the superior capacity to accommodate a large number of ions. With a temperature differential of 45 °C (K), the TCS using this carbonized flowery lignin electrode is capable of producing an open-circuit voltage of 513 mV with a Seebeck coefficient as high as 11.40 mV K −1 . This work not only demonstrates the applicability of carbonized lignin as an advanced material for energy applications but it also offers a fresh viewpoint on the advancement of TCS.
研究领域:
材料科学
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能源技术
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环境科学
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DOI
高影响因子
WATER AIR AND SOIL POLLUTION
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2020
·Vol. 231
·期 6
·1-16
·
IF 1.9
Xie Chunsheng,Wen Xinyi,Xiao Chun,Wei Shoulian,Wu Xiange,Liu Shasha,Cao Jiangfei
Cu-based copper nanoclusters have generated a great deal of interest based on for their fluorescent and catalytic properties. However, as heterogeneous catalysts, little attention has been given to the degradation of organic pollutants in Fenton-like reaction systems. Here, flower-like copper nanoclusters/flower carbon heterostructured microspheres were prepared by a one-pot mixing template-based method. With Cu-based copper nanoclusters/carbon (CuNCs/C) composite as a Fenton-like catalyst, a CuNCs/C-H 2 O 2 system was used to degrade Amido Black 10B (AB-10B). The effects of different factors on the degradation rate of AB-10B were studied. A 98.6% degradation ratio of AB-10B was reached for the CuNCs/C -H 2 O 2 based Fenton-like reaction within 180 min under optimal experimental conditions. The CuNCs/C concentration was 0.06 g/L, the dosage of H 2 O 2 was 25 mmol/L, the mass ratio of CuNCs and the carbon was 1:2, pH = 6.0, and the reaction temperature was 40.0 °C. The removal rate of AB-10B on CuNCs/C decreased by less than 10% even after 6 catalytic cycles, which showed a remarkable reusability characteristic and high catalytic activity. Cu 0 and Cu + were found to co-exist in the catalysts and presented a high degradation effective for intermediates that were identified by liquid chromatography-mass spectrometry (LC-MS). These results indicated that the catalysts can be used as highly efficient Fenton-like catalyst for the degradation of toxic organic pollutants in wastewater.
Graphical Abstract
研究领域:
环境科学
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材料科学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
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IF 5.1
Yixian Zhao,Yuhong Li,Pengcheng Zhao,Li Zhang,Junjie Fei,Yixi Xie
Acetaminophen (AP) is a commonly used antipyretic analgesic that plays an important role in relieving fever and pain. However, long-term or excessive use of AP will bring serious health problems, especially to aquatic organisms. Therefore, it is of great significance to establish an effective method for AP detection. In this work, metal molybdenum (Mo) was first introduced into the flaky zeolite imidazolium hydrochloride framework (ZIF-L). The composite was then pyrolyzed to obtain a Mo/Co co-doped flower-like carbon framework (Mo/Co-PCF) which was employed to fabricate an electrochemical sensor for acetaminophen detection. With the Mo ion, ZIF-L forms a cross-linked sheet structure, increasing the surface area and exposing more active points. After calcination, the enhancement of conductivity and the synergistic effect between the bimetallic ions endow Mo/Co-PCF with good electrochemical properties. Under optimized conditions, the prepared Mo/Co-PCF/GCE showed excellent electrocatalytic properties and high sensitivity to AP, with a linear range of 0.005–75 μM and LOD of 1.2 nM. Moreover, the proposed sensor also showed good selectivity and excellent repeatability, and reproducibility. The work provides an alternative method for AP detection in the field of drug detection and environmental water samples.
研究领域:
药物分析
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环境科学
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材料科学
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产品关联
DOI
高影响因子
CARBON
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2020
·
IF 8.821
Binpeng Zhang,Dongjie Yang,Xueqing Qiu,Yong Qian,Huan Wang,Conghua Yi,Dongqiao Zhang
The application of ZnO nanoparticles as photocatalyst is significantly hampered by limited absorption range for solar spectrum, fast recombination of photogenerated carriers and poor recyclability . The modification with carbon structures has attracted attention as their advantageous performance in photocatalysis . Herein, we first report a lignin-derived flower-like carbon (LFC), which is used to modify ZnO. The resulting composite (ZnO/LFC) is composed of ZnO nanoparticles (∼10 nm) embedded on a flower-like carbon consisting of two-dimensional corrugated nanosheets . Especially, LFC exhibits stable three-dimensional structure and rich oxygen-containing functional groups. So ZnO can be uniformly anchored on the LFC. Composite presents an extended optical absorption and enhanced separation of photogenerated carriers due to the interface electronic interaction between ZnO and LFC. The hierarchical flower-like structure facilitates fast substance transfer and high light-harvesting efficiency. Therefore, ZnO/LFC presented an excellent photocatalytic activity toward degradation of sulfamethazine and hydrogen evolution , which were about 3.0 and 2.1 times that of pure ZnO, respectively. Moreover, the recyclability of composite photocatalyst was also significantly better than pure ZnO. This work not only provides a facile, low-cost and scalable strategy to promote practical application of photocatalyst but also opens new path toward the high-value utilization of industrial lignin.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Wen Wu,Yuan Wu,Dong Zheng,Kai Wang,Zhenghua Tang
Developing highly active, stable, and efficient electrocatalysts for overall water splitting (OWS) is imperative to produce hydrogen with high purity. Herein, a series of Ni@Ru core-shell nanoparticles on flower-like carbon nanosheets (denoted as Ni@Ru/CNS-x, where x is the initial Ru mass loading percentage, and x = 5%, 10%, 15%) were fabricated through a facile wet chemical strategy by employing a metal-organic framework (MOF) as a sacrificial precursor. The Ni@Ru/CNS-x series was investigated to catalyze hydrogen evolution reaction (HER) in all-pH-value solutions, oxygen evolution reaction (OER) and water electrolysis in alkaline media. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) analysis revealed the Ni@Ru/CNS-x presented a three-dimensional (3D) flower-like structure composed of nanosheets with a thickness of approximately 30 nm. The resultant catalysts exhibited excellent HER, OER and OWS performance in 1.0 M KOH. Ni@Ru/CNS-10% displayed the most outstanding electrocatalytic properties , evidenced by a low overpotential of 20.1 mV and 356 mV @ 10 mA cm −2 for HER and OER in 1.0 M KOH, and outperformed stability than Pt/C and RuO 2 for HER and OER, respectively. Moreover, it exhibited a potential of 1.612 V @10 mA cm −2 in the practical OWS test, superior to both Pt/C and RuO 2 catalysts. The strategy can be extended for rational design and preparation of low cost, highly active and durable electrocatalyst with bifunctionalities for OWS and other renewable energy devices.
研究领域:
材料科学
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电化学
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可再生能源
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Yuhong Li,Yujun Cheng,Yutian Huang,Pengcheng Zhao,Junjie Fei,Yixi Xie
Glyphosate (Gly), as a widely used broad-spectrum herbicide, may lead to soil and water pollution due to its persistence in the environment. Herein, the co-reduction method was employed to anchor bimetallic PdCu onto the Ni and nitrogen-doped 3D Flower-like Carbon Materials (Ni@NC), creating a composite material (PdCu/Ni@NC) with high specific surface area and good catalytic performance. This composite was used to modify screen-printed electrodes (SPE) to develop a portable and efficient Gly detection platform. In the presence of Cl⁻, the copper active sites convert to CuCl, achieving signal amplification. Upon the addition of Gly, a competitive reaction between Cu and Gly converts CuCl into a Cu-Gly complex, resulting in a sharp decrease in the electrochemical signal. This signal drop is used to detect Gly. The bimetallic PdCu nanoparticles (NPs) endowed the sensing platform with better stability and electrochemical performance due to their synergistic effect, and their stability was simply verified by Density functional theory (DFT). The sensor demonstrates a linear detection range spanning from 1 × 10⁻¹ ³ to 1 × 10⁻⁵ M, with a limit of detection (LOD) of 3.72 × 10⁻¹ ⁴ M. The sensor demonstrated a recovery rate of 95.9 % to 104.5 % in actual samples such as water and soil, indicating its potential for practical application.
研究领域:
环境科学
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分析化学
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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
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Chunfeng Shao,Lingmin Wu,Yinghua Wang,Konggang Qu,Hailiang Chu,Lixian Sun,Jianshan Ye,Baitao Li,Xiujun Wang
Single-atom catalysts (SACs) have sparked intense interest in heterogeneous catalysis lately, but insufficient accessibility of active sites restricts their further applications. Herein, a hydrangea-like carbon nanoparticle possessing highly open nanospaces and enhanced external surface area that fully exposes the catalytic sites is reported. By introducing mesoporous silica nanoparticles (MSNs), Fe-doping zeolitic imidazolate framework-8 (ZIF-8) precursors are assembled into a flower-like superstructure interlaced by porous nanosheets, which expand from inside out constructing an open and interconnected architecture. This unique structure can substantially liberate the densely dispersed but deeply buried Fe-N 4 sites inside carbon nanoparticles and accelerate mass transfer in the catalyst layer that increases active-site utilization. Furthermore, the physical and chemical properties of the assembled catalysts can be adjusted by the diameter (200, 300, and 500 nm) of MSNs. When the diameter was 500 nm, the optimal FeNC-F3 catalyst exhibited large specific surface area, maximum metal centers utilization, high oxygen reduction reaction efficiency, and excellent stability. The novel cathodic electrocatalyst achieved high power density of 0.32 mW cm −2 in microbial fuel cell and 288 mW cm −2 in Zn-air battery. This work established a realistic strategy for promoting the practical development of fuel cell catalysts.
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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能源存储与转换
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）