JOURNAL OF POWER SOURCES
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2023
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IF 9.2
Xiaoyu Yang,Ying Qi,Peng Wei,Qixu Hu,Jian Cheng,Yahong Xie
Carbon-based CsPbI 2 Br perovskite solar cells (C–PSCs) have the advantages of low cost and stable performance, but the poor contact and energy mismatch between the perovskite layer and the carbon electrode lead to low power conversion efficiency (PCE). In this work, uniform spindle-shaped Fe 3 O 4 @NC composites have prepared by calcining Fe-based metal organic framework (Fe-MOF) NH 2 -MIL-88B(Fe), which has synthesized by solvothermal reaction using 2-aminoterephthalic acid as nitrogen and carbon sources. Using Fe 3 O 4 @NC composite and UV-Ozone treated Fe 3 O 4 @NC composite (Fe 3 O 4 @NC UVO) as the interfacial layer between the perovskite layer and the carbon electrode, the devices with a structure of FTO/SnO 2 /CsPbI 2 Br/interfacial layer/Carbon exhibit a maximum PCE of 12.25%, which is about 19.28% higher than that of the pristine device. The improved optoelectronic performance is mainly attributed to more matched energy level, denser interface contact, better carrier separation performance and better conductivity. After 19 days of storage at room temperature and ambient humidity, Fe 3 O 4 @NC UVO device has retained 87% of the initial PCE. This work provides a simple and effective strategy to improve the PCE and stability of carbon-based CsPbI 2 Br PSCs with Fe-MOFs-derived carbon materials .
研究领域:
材料科学
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可再生能源
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光伏技术
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DOI
高影响因子
Catalysts
·
2021
·Vol. 11
·期 10
·1219
·
IF 4.146
Jun Qiao,Tian Wang,Kai Zheng,Enmu Zhou,Chao Shen,Aiquan Jia,Qianfeng Zhang
A novel reusable Fe3O4@NC@Pt heterogeneous catalyst was synthesized by immobilizing platinum on nitrogen-doped carbon magnetic nanostructures. It was characterized by infrared analysis (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM), and vibrating sample magnetometer (VSM). The catalytic efficiency of Fe3O4@NC@Pt was investigated by reduction of nitro aromatic compounds. The catalyst showed good catalytic activity, wide range of substrates, and good chemical selectivity, especially for the substrates of compounds containing halide and carbonyl groups. The magnetically catalyst can readily be reused up to ten cycles without loss of catalytic activity. Moreover, the key pharmaceutical intermediateLorlatinican be facilely achieved through this strategy.Keywords:reusable;magnetic;platinum;selective reduction;nitroarenes
研究领域:
化学
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材料科学
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催化反应
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DOI
高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Xiuxiu Sun,Ani Zhou,Shuzhen Li,Maoguo Li
On using magnetic Fe3O4 as the core of nitrogen-doped carbon (NC) matrix composite Fe3C (Fe3C/Fe3O4@NC), it not only shows good peroxide-like and oxidase-like properties but also has excellent Fenton-like degradability. Based on the Fenton-like properties of the core–shell nanocomposites, ciprofloxacin can be degraded by activated peroxo monosulfate. The magnetic core is easy to recover, and the shell has good catalytic performance. The degradation rate using Fe3C/Fe3O4@NC as the catalyst was 7.3 and 2.9 times that of Fe3O4 and Fe3O4@NC as catalysts, respectively, and the sulfate radical was found to be the main active species involved in the degradation. The actual performance of the catalyst was evaluated in simulated wastewater and different water sources. Inorganic anions slightly changed the degradation rate, while common organic compounds in wastewater reduced the degradation rate. The composite materials have excellent catalytic performance, good magnetic response, and repeatability, which are conducive to practical application in wastewater treatment process.
研究领域:
环境科学
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催化材料
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DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·Vol. 74
·期 32
·25644-25659
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IF 6.7
Liu Bingbing,Yang Tianshuo,Liu Shuangshuang,Pan Hong,Ren Xiaoxuan,Zhang Haotian,Xu Yuanhui,Gao Faming
A hierarchical Zn-substituted Fe 3 O 4 @NC/CuS@MoS 2 heterostructure was rationally
designed for
the electrochemical
detection of organophosphorus pesticides such as methamidophos and
dichlorvos. Hollow Fe 2 O 3 nanospheres were synthesized
hydrothermally, followed by Zn-substitution, polydopamine-derived
nitrogen-doped carbon coating, and in situ growth of CuS@MoS 2 nanosheets. The Zn-substitution modulates the electronic structure,
while the carbon network and the CuS@MoS 2 heterojunction
synergistically enhance charge transfer kinetics, increase the electroactive
surface area, provide abundant sites for acetylcholinesterase immobilization,
and ensure favorable biocompatibility. The resulting enhanced interfacial
electron transfer reduces the charge transfer resistance to 41.6 Ω.
The biosensor exhibits broad linear ranges for methamidophos (7.09
× 10 –7 μM to 7.09 × 10 –2 μM) and dichlorvos (4.53 × 10 –7 μM
to 4.53 × 10 –2 μM), with detection limits
of 8.7 × 10 –8 μM and 2.0 × 10 –7 μM, respectively. Real-sample analysis in Chinese
cabbage and apple yields recoveries of 96.36%–102.40% for methamidophos
and 95.92%–101.77% for dichlorvos, confirming its practical
viability for trace pesticide monitoring.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2024
·
IF 4.1
Qian Zhang,Xiaoqin Sun,Yuan Dang,Jun-Jie Zhu,Yuanzhen Zhou
In this work, Fe 3 O 4 -anchored nitrogen-doped carbon catalyst (Fe 3 O 4 @N–C) with abundant oxygen vacancies (V o ) and mesoporous structure was successfully synthesized for electro-Fenton (EF) catalytic process. The catalyst demonstrated impressive degradation efficiency towards nitroso-containing organics due to the superior electronic transfer of N–C skeleton and V o , making it easier for the electron-deficient –NO 2 groups to adsorb on the catalyst surface and oxidize rapidly. Typically, the degradation efficiency of p-nitrophenol (PNP) reached 95.6 % in natural pH. Notably, the catalyst exhibited excellent performance over a wide pH range (3 ∼ 11), and has strong anti-interference performance against anions and natural organic matter in water matrix. Mechanism analysis indicated that V o could promote the formation of highly active electron-rich Fe(II) species, and promote the activation of H 2 O 2 and O 2 as additional active sites, thus, a large amount of ·OH and O 2 ·- would be produced and then quickly converted into 1 O 2 . As a result, 1 O 2 is the main reactive species for PNP degradation in Fe 3 O 4 @N–C electro-Fenton reaction. The results will provide insights into the design of high-performance catalysts for the selective oxidation of organic pollutants in wastewater.
研究领域:
环境科学
·
催化材料
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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）