Page 125 - 《精细化工》2020年第7期

第 7 期 赵国峥，等: 介孔 Ag/AgCl/CeO 2 的制备及其 photo-CWPO 体系的催化性能 ·1407·

CeO 2 ，然后采用沉积-沉淀法和光还原法制备出 sono-Fenton-like process using magnetic cobalt ferrite-reduced
graphene oxide(CoFe 2O 4-rGO) nanocomposite for the removal of
Ag/AgCl/CeO 2 催化剂。利用XRD、N 2 吸附-脱附、SEM、
organic dyes from aqueous solution[J]. Ultrasonics-Sonochemistry,
TEM、EDS 和 UV-Vis-DRS 等手段对材料进行了表 2018, 40(PartA): 841-852.
征与分析，发现采用微波辅助技术可以快速制备出 [9] MUNOZ P G, PLIEGO G, ZAZO J A, et al. Modified ilmenite for
CWPO-photoassisted process under LED light[J]. Chemical
具有有序介孔结构的 Ag/AgCl/CeO 2 催化材料。Ag/ Engineering Journal, 2016, 318(15): 89-94.
AgCl 的负载没有改变 CeO 2 的介孔结构，Ag/AgCl/ [10] IFELEBUEGU A O, UKPEBOR J, NZERIBE-NWEDO B.
Mechanistic evaluation and reaction pathway of UV photo-assisted
CeO 2 的比表面积减小。Ag/AgCl/CeO 2 对可见光 Fenton-like degradation of progesterone in water and wastewater[J].
（400~700 nm）具有较强的吸收。 International Journal of Environmental Science and Technology,
2016, 13(12): 2757-2766.
（2）在可见光辐照下，建立了 photo-CWPO 联 [11] GOLESTANBAGH M, PARVINI M, PENDASHTEH A. Preparation,
用体系，研究了 Ag/AgCl/CeO 2 在不同条件下的催化 characterization and photocatalytic properties of visible-light-driven
性能，催化剂投加量、Ag 负载量、H 2 O 2 浓度及 pH CuO/SnO 2/TiO 2 photocatalyst[J]. Catalysis Letters, 2018, 148(7):
2162-2178.
均会对 COD 的去除率产生影响。结果表明：在高压 [12] WANG P, HUANG B B, QIN X Y. Ag@AgCl: A highly efficient and
钠灯辐照下，COD 质量浓度为 500 mg/L 的丙烯腈 stable photocatalyst active under visible light[J]. Angewandte
Chemie International Edition, 2008, 47(41): 7773-7965.
废水、投加 200 mg Ag/AgCl/CeO 2 (2)和 8 mL 的 H 2O 2 [13] WU M, YAN L T, LI J L, et al. Synthesis and photocatalytic
（质量分数 30%），水浴温度 40 ℃，反应 60 min 后， performance of Ag/AgCl/ZnO tetrapod composites[J]. Research on
Chemical Intermediates, 2017, 43(11): 6407-6419.
COD 的最大去除率可达到 90%。催化剂使用 5 次后
[14] LI S J, XUE B, WU G Y, et al. A novel flower-like Ag/AgCl/
COD 去除率仍能达到 85%。 BiOCOOH ternary heterojunction photocatalyst: facile construction
（3）推测了可能的降解机理：在可见光的照射 and its superior photocatalytic performance for the removal of toxic
pollutants[J]. Nanomaterials, 2019, 9(11): 1562-1570.
下，Ag、AgCl、CeO 2 与 H 2O 2 协同作用产生•OH 和 [15] GUAN X M, LIN S J, LAN J W, et al. Fabrication of Ag/AgCl/
0
Cl 等活性物种，能够有效降解丙烯腈废水中的有机 ZIF-8/TiO 2 decorated cotton fabric as a highly efficient photocatalyst
for degradation of organic dyes under visible light[J]. Cellulose,
物。通过叔丁醇捕获•OH 实验，证明在 photo-CWPO 2019, 26(12): 7437-7450.
体系降解有机物的过程中起主要作用的是•OH。 [16] ZHAO D Y, HUO Q S, FENG J L, et al. Nonionie tri-block and star
di-block copolymer and oligomeric surfactant syntheses of highly
（4）以 Ag/AgCl/CeO 2 为催化剂，photo-CWPO
ordered hydrothermally stable mesoporous silica structures[J].
联用能够高效降解丙烯腈废水中有机物。但是由于 Journal of the American Chemical Society, 1998, 120(24): 6024-
本研究催化实验都属于间歇性实验，难以实际工程 6036.
[17] AWAZU K, FUJIMAKI M, ROCKSTUHL C, et al. A plasmonic
应用。因此，本课题组将进一步研究太阳光辐照下， photocatalyst consisting of silver nanoparticles embedded in titanium
Ag/AgCl/CeO 2 在连续性条件下的 CWPO 催化性能。 dioxide[J]. Jouranl of the American Chemical Society, 2008, 130(5):
1676-1680.
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