In recent years, inhibition of photoinduced electron and hole recombination is considered as a breakthrough to improve the photocatalytic degradation of pollutants. In this study, we successfully loaded ZnFe 2 O 4 (ZFO) microsphere onto BiFeO 3 (BFO) microcubes by a simple hydrothermal method. Under the effect of heterojunction between BFO and ZFO, the recombination rate of electron and hole was decreased significantly, leading to the enhanced photocatalytic effect. Morphology analysis shows that ZFO and BFO interface are closely combined. The photocatalytic experiments show that the degradation efficiency of tetracycline and methylene blue by BFO/ZFO-10% composites are 1.63 and 1.38 times higher than that of pure BFO. In addition, four cycles of experiments also proved that BFO/ZFO-10% has good stability and excellent magnetic properties, making the sample easy to be recovered. A possible electron hole transfer path on the base of a direct Z-scheme mechanism was proposed. This study provides a useful guide toward the design of the highly efficient and magnetic collectable photocatalysts by the introduction of magnetic component and the construction of heterojunction, and as-synthesized BFO/ZFO was proved to be a promising photocatalyst for the elimination of toxic organic molecules in groundwater.

Degradation

Visible spectrum

10.2139/ssrn.4045424

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An intelligent hybrid feature subset selection and production pattern recognition method for modeling ethylene plant

Journal of Analytical and Applied Pyrolysis (2021)

Qing Li Mengxuan Zhang Xiaogang Shi Xingying Lan Xuqiang Guo

Petrochemical

Benchmark (surveying)

Feature (linguistics)

10.1016/j.jaap.2021.105352

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Citations (13)

Multimode residual monitoring of particle concentration in flue gas from Fluid Catalytic Cracking regenerator

Control Engineering Practice (2025)

Cheng Zhu Nan Liu Mengxuan Zhang Li Zeng Yuhui Li

Fluid catalytic cracking

Particle (ecology)

10.1016/j.conengprac.2024.106227

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Citations (1)

S Doped Carbon Nanotubes Scaffolded Silicon Anode Toward Splendid High-Temperature Performance

Mengxuan Zhang Lu Zhao Dong Sun Yankun Sun Chunming Xu

The poor electronical conductivity and large volume change of nano-silicon anode has seriously hander its further application. To overcome these drawbacks, we employed the S-doped multiwalled carbon nanotubes (SCNTs) as the conductive additive to fabricating a scaffolded framework for the first time. The as-assembled Si anode with 5 wt% SCNTs (Si@C-5SCNTs) shows a large specific capacity of 939 mA h g-1 at 2 A g-1, within 0-1 V, significantly higher than that of Si@C (466 mA h g-1) and Si@C-5CNTs (720 mA h g-1), showing a superior rate performance. Besides, it shows higher initial coulombic efficiency, Li-ion diffusion coefficient, cycling performance, and smaller volume change than that of Si@C and Si@C-CNTs at room temperature. Even at 40 ℃, the Si@C-5SCNTs anode still show a superior rate performance (1842 and 819 mAh g-1 at 0.05 and 2 A g-1, respectively) and cycling stability (83.6% capacity retention) than that of Si@C and Si@C-5CNTs. To better explain the significantly enhanced electrochemical performance of Si anode both room and high temperature conditions, both the chemo-mechanical coupling and internal temperature distribution models have been rational constructed, and further demonstrated that the SCNTs can effectively buffer the volume expansion and reduce the internal local temperature rise.

Carbon fibers

10.2139/ssrn.4356110

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