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基于尖晶石型铁氧体的高级氧化技术在有机废水处理中的应用

葛明, 胡征, 贺全宝

化学进展, 2021, 33(9): 1648-1664. DOI: 10.7536/PC200851

Catalyst	Application in AOPs	Mechanism for organic pollutants degradation	Methods for the enhancement of activity
ZnFe₂O₄	(1)Fenton ^[19⇓~21]	≡Fe³⁺ + e^- → ≡Fe²⁺; ≡Fe²⁺+ H₂O₂→·OH + ≡Fe³⁺ + OH^- ·OH + pollutants → degradation products	Carbon modification^[20,21]
ZnFe₂O₄	(2)Photocatalysis ^{[13,41,43~44,46⇓⇓⇓⇓⇓~52,54,56]}	ZnFe₂O₄ + hν → e^- + h⁺O₂ + e^- → $O 2 · - O 2 · -$ /h⁺ + pollutants → degradation products	Carbon modification ^[49,52] Construction of heterojunction ^{[13,44,46⇓⇓⇓⇓⇓~52,54]}
NiFe₂O₄	(1)Fenton ^[22⇓~24]	≡Fe³⁺ + e^- → ≡Fe²⁺; ≡Ni²⁺+ ≡Fe³⁺ → ≡Fe²⁺+ ≡Ni³⁺ ≡Fe²⁺+ H₂O₂→·OH + ≡Fe³⁺ + OH^- ·OH + pollutants → degradation products	Carbon modification^[23,24]
	(2)Photocatalysis ^{[14,57,61,62,66]}	NiFe₂O₄ + hν → e^- + h⁺O₂ + e^- → $O 2 · -$ $O 2 · -$ /h⁺ + pollutants → degradation products	Metal deposition ^[57,61] Construction of heterojunction ^[14,62,66]
	CoFe₂O₄	(1)Fenton ^{[27⇓⇓~30]}	≡Co²⁺+ H₂O₂→·OH + ≡Co³⁺ + OH^- ≡Fe²⁺+ H₂O₂→·OH + ≡Fe³⁺ + OH^- ·OH + pollutants → degradation products	Carbon modification^[28,29]
(2)Photocatalysis ^{[15,60,64,67,68]}		CoFe₂O₄ + hν → e^- + h⁺O₂ + e^- → $O 2 · -$ $O 2 · -$ /h⁺ + pollutants → degradation products	Carbon modification^[60] Construction of heterojunction ^{[15,64,67,68]}
(3)Persulfate oxidation ^{[72⇓⇓⇓⇓⇓⇓~79]}		≡Co²⁺-OH^-+ $HSO 5 -$ →≡CoO⁺+ $SO 4 · -$ +H₂O ≡Fe³⁺ + $HSO 5 -$ → ≡Fe²⁺+ $SO 5 · -$ + H⁺ ≡Fe²⁺ + $HSO 5 -$ → ≡Fe³⁺+ $SO 4 · -$ + OH^- $SO 4 · -$ +H₂O → $SO 4 2 -$ + ·OH + H⁺ $SO 4 · -$ /·OH + pollutants → degradation products	Metallic oxide modification ^[74,75] Carbon modification ^[76⇓~78]
CuFe₂O₄		(1)Fenton ^{[12,35,37⇓⇓~40]}	≡Cu⁺+ H₂O₂→·OH + ≡Cu²⁺ + OH^- ≡Fe²⁺+ H₂O₂→·OH + ≡Fe³⁺ + OH^- ·OH + pollutants → degradation products	Carbon modification ^[37,38,40] Metal modification ^[12]
	(2)Photocatalysis ^[16,58,65]	CuFe₂O₄ + hν → e^- + h⁺O₂ + e^- → $O 2 · -$ $O 2 · -$ /h⁺ + pollutants → degradation products	Construction of heterojunction ^[16,65] Metal deposition ^[58]
	(3)Persulfate oxidation ^{[17,80⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓~91]}	≡Cu⁺ + $HSO 5 -$ → ≡Cu²⁺+ $SO 4 · -$ + OH^- ≡Fe²⁺ + $HSO 5 -$ → ≡Fe³⁺+ $SO 4 · -$ + OH^- ≡Fe²⁺ + $HSO 5 -$ → ≡Fe³⁺ + $SO 4 2 -$ + ·OH ≡Cu⁺ + $HSO 5 -$ → ≡Cu²⁺ + $SO 4 2 -$ + ·OH S₂ $O 8 2 -$ + ≡Cu⁺→≡Cu²⁺ + $SO 4 · -$ + $SO 4 2 -$ S₂ $O 8 2 -$ + ≡ $Fe 2 +$ →≡Fe³⁺+ $SO 4 · -$ + $SO 4 2 -$ $SO 4 · -$ /·OH + pollutants → degradation products	Metal modification ^[17] Carbon modification ^[87,88,91] Metallic oxide modification ^[86]
MnFe₂O₄	(1)Fenton ^[31,33,34]	≡ $Mn 2 +$ + H₂O₂→·OH + ≡ $Mn 3 +$ + OH^-≡Fe²⁺+ H₂O₂→·OH + ≡Fe³⁺ + OH^- ·OH + pollutants → degradation products	Carbon modification ^[33]
MnFe₂O₄	(2)Persulfate oxidation ^{[92⇓⇓⇓⇓⇓⇓⇓~100]}	≡ $Mn 2 +$ + $HSO 5 -$ → ≡ $Mn 3 +$ + $SO 4 · -$ + OH^- ≡Fe²⁺ + $HSO 5 -$ → ≡Fe³⁺+ $SO 4 · -$ + OH^- S₂ $O 8 2 -$ + ≡ $Mn 2 +$ → ≡Mn³⁺+ $SO 4 · -$ + $SO 4 2 -$ $SO 4 · -$ +H₂O → $SO 4 2 -$ + ·OH + H⁺ $SO 4 · -$ /·OH + pollutants → degradation products	Carbon modification ^[95,99] Metallic oxide modification ^[97,100]

表4 不同铁氧体在3类高级氧化技术中的应用、催化机制以及活性增强方法的比较

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