JOURNAL OF ALLOYS AND COMPOUNDS
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2017
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IF 3.133
Yiping Tang,Huanle Zhang,Jiquan Li,Guangya Hou,Huazhen Cao,Liankui Wu,Guoqu Zheng,Qingliu Wu
A novel three-dimensional ordered macroporous (3DOM) Cu/Fe 3 O 4 composite film was prepared by electrodepositing ferroferric oxide (Fe 3 O 4 ) on the 3DOM Cu current collector. Characterizations via electron microscopies and X-ray diffractions confirmed that achieved 3DOM Cu/Fe 3 O 4 composite inherited originally ordered porous structure, but has a layer of nanosized Fe 3 O 4 on the surface of the 3DOM Cu framework. The obtained 3DOM Cu/Fe 3 O 4 composite films were directly used as anodes of lithium ion batteries in the absence of conducting additives or binders. Results from electrochemical evaluations exhibited that the 3DOM Cu/Fe 3 O 4 anode could deliver a stable capacity of 800 mAh g −1 up to 400 cycles, while fast capacity degradation with 200 mAh g −1 retained after 100 cycles was observed on Fe 3 O 4 deposited on plane Cu substrate. The superior behavior of the 3DOM Cu/Fe 3 O 4 composite anode is ascribed to its unique porous structure, which provides sufficient space for large volume change of Fe 3 O 4 and greatly reduces the diffusion distance for Li-ion in the active material.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xin-Yu Zhou,Kai-Wei Chen,Ao-tian Gu,Shan Yun,Ping Mao,Yi Yang,Jing Chen
Adsorption is considered to be one of the most effective methods to remove radioiodine from the solution. However, developing highly efficient adsorbents and the rapid recovery of the used adsorbents is still a challenge. Here, a series of Cu/Fe 3 O 4 bimetallic mutual-doping magnetic aerogels (Cu/Fe 3 O 4 -BMMA) were synthesized. Based on the in-situ bimetallic co-gelation process, the high dispersion of Cu in the aerogel was realized, providing conditions for the efficient elimination of I 2 . The Fe 3+ in the initial gel was reduced to magnetic Fe 3 O 4 during the preparation process, allowing for the quick recovery of the adsorbent through the application of a magnetic field. The adsorption experiments showed that Cu/Fe 3 O 4 -BMMA has good I 2 adsorption capacity (631.3 mg/g) and fast capture kinetics (equilibrium time < 30 min). In addition, Cu/Fe 3 O 4 -BMMA was able to effectively remove trace I 2 in the solution from ppm level (1.0 ppm) down to ppb level (≤30 ppb). The adsorbed I 2 was converted into stable CuI, avoiding secondary pollution due to desorption. Overall, this study provides a potentially efficient iodine capture material for long-term decay storage of radioactive iodine.
研究领域:
环境科学
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材料科学
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核工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Xin Xu,Kang Shen,Min Wen,Qingliu Wu,Guangya Hou,Huazhen Cao,Liankui Wu,Guoqu Zheng,Yiping Tang
A three-dimensional (3D) Cu/Fe 3 O 4 anode material was synthesized successfully via a simple and flexible route. Cu nanowires grew on Cu sheet directly by oxidation and reduction as 3D current collector, Fe 3 O 4 nanosheets were coated on the collector surface by electrodeposition to form 3D Cu/Fe 3 O 4 nanocomposite. The characterization results showed that oxidation time affects the morphology of Cu nanowires greatly, the collector has optimum 3D nanostructure at 200 s oxidation with high performance. The 3D Cu/Fe 3 O 4 anode possessed high cycling capability, the capacity reached 700 mAh/g after 300 cycles at 0.5 A/g. And it exhibited high rate performance, the capacity reached 482 mAh/g at 2 A/g and it recovered to 853.5 mAh/g at 0.2 A/g after 100 cycles of different rate tests. The high performance is ascribed to the unique 3D nanostructure of current collector, which provides sufficient space for large volume change and stress release, and reduces the distance for transporting lithium ions and electrons.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Zheng Cheng,Jikang Cao,Haobo Lin,Yuchen Wang,Ran Qin,Yuhao Ruan,Xinyu Hu,Jingxuan Cang,Chang Sun,Dong Qiu,Yifeng Bian,Yifei Du,Yongchu Pan
Age-related decline in bone healing capacity poses significant challenges for tooth extraction recovery in the elderly. Elevated reactive oxygen–nitrogen species (RONS) and impaired mitophagy drive this pathology. We engineered bimetallic Cu–Fe3O4 nanoclusters with oxygen vacancies (OVs) via hydrothermal synthesis. The abundant oxygen vacancies and bimetallic synergy endow Cu–Fe3O4 with exceptional enzyme-mimicking activity, enabling efficient scavenging of excess RONS and activation of mitophagy in senescent cells in vitro, thereby reversing functional decline. Owing to its excellent biocompatibility and negligible in vivo toxicity, Cu–Fe3O4 accelerates tooth extraction wound healing in aged animal models.
研究领域:
纳米医学
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老年学
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牙科生物材料
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氧化还原生物学
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再生医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）