粉煤灰漂珠负载聚苯胺/ZnFe2O4复合材料制备及光催化降解性能研究

doi:10.3969/j.issn.2097-2806.2026.10.005

Abstract

Abstract:

To solve the problem of water pollution caused by sulfonamide antibiotics, in this study, the composites of polyaniline@zinc ferrite loaded on fly-ash cenospheres （PANI@ZnFe₂O₄/FAC） were prepared by in-situ polymerization. The crystal structure, microstructure and photoelectrochemical properties of the composites were characterized by XRD, SEM, FT-IR, UV-vis DRS, PL and EIS. Sulfamethazine （SMZ） was used as the target pollutant in wastewater for degradation. The photocatalytic performance, durability and substrate universality of the composite were evaluated, and the photocatalytic mechanism was analyzed and proposed. The preparation conditions were optimized by L₉（3⁴） orthogonal experiment. The results showed that the composite material prepared under the condition of the mass ratio of aniline:ZnFe₂O₄/FAC of 1:1, the molar ratio of aniline: ammonium persulfate of 1:2, the concentration of hydrochloric acid of 0.5 mol/L and the reaction time of 8 h showed excellent photocatalytic performance. The highest degradation percentage of SMZ reached 98.90% under simulated visible light irradiation for 60 min. The enhanced photocatalytic activity could be ascribed to the construction of type-II heterojunction between PANI and ZnFe₂O₄/FAC, which had realized the efficient separation of photogenerated carriers and reduced the electrochemical impedance. The active species quenching results showed that ·O₂^- and h⁺ played key roles in the photocatalytic process.

Key words: fly-ash cenosphere, polyaniline, zinc ferrite, composite material, photocatalytic degradation, sulfamethazine

CLC Number:

O643.3

Dengxu Shen, Liusheng Chu. Preparation and photocatalytic degradation performance of polyaniline/ZnFe₂O₄ composites loaded on fly-ash cenospheres[J].China Surfactant Detergent & Cosmetics, 2026, 56(10): 1327-1336.

Figures/Tables 13

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序号	因素				SMZ降解率/%
序号	ANI和ZnFe₂O₄/FAC质量比	ANI和APS摩尔比	盐酸浓度/（mol/L）	反应时间/h	SMZ降解率/%
1	2:1	2:1	0.5	6	65.01
2	2:1	1:1	1.0	8	65.51
3	2:1	1:2	1.5	10	70.15
4	1:1	2:1	1.0	10	80.17
5	1:1	1:1	1.5	6	74.35
6	1:1	1:2	0.5	8	98.90
7	1:2	2:1	1.5	8	61.98
8	1:2	1:1	0.5	10	61.49
9	1:2	1:2	1.0	6	72.11
均值1	66.890	69.053	75.133	70.490
均值2	84.473	67.117	72.597	75.463
均值3	65.193	80.387	68.827	70.603
极差	19.280	13.270	6.306	4.973

材料	原子分数/%
材料	O	Al	Si	Fe	Zn	C	N
ZnFe₂O₄/FAC	30.81	10.48	12.86	35.84	10.01
PANI@ZnFe₂O₄/FAC	15.41	0.91	1.12	13.44	4.39	57.33	7.40

Preparation and photocatalytic degradation performance of polyaniline/ZnFe₂O₄ composites loaded on fly-ash cenospheres

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Preparation and photocatalytic degradation performance of polyaniline/ZnFe2O4 composites loaded on fly-ash cenospheres

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Preparation and photocatalytic degradation performance of polyaniline/ZnFe₂O₄ composites loaded on fly-ash cenospheres