Cu2O@Cu4(SO4)(OH)6的制备及黑暗下降解橙黄II

蔡丹丹; 万霞; 铁绍龙

doi:10.6054/j.jscnun.2017073

摘要: 本文采用液相还原法合成出具有不同摩尔比的Cu2O/Ag(x)复合型催化剂，采用XRD、SEM、UV-Vis-NIR漫反射(DRS)分析手段对样品进行表征。结果显示，纳米金属Ag的存在，使得Cu2O/Ag(x)样品对光的吸收扩展到了整个可见和近红外区，且随样品中Ag含量的增加，该区域的吸收逐渐增强，证明Cu2O/Ag(x)复合催化剂对太阳光具有高的光吸收能力。以甲基橙（MO）为目标降解物，研究催化剂在黑暗条件下的降解性能，结果表明Cu2O/Ag(0.05)催化剂具有最高的降解能力，在120 min内黑暗条件下MO (30 mg?L-1) 降解率达到89.2%。同时对Cu2O/Ag(x)复合催化剂的降解机理进行了探讨。

关键词:

降解甲基橙

Abstract: A series of Cu2O/Ag(x) samples with different molar ratios were synthesized by a liquid phase reduction method. The properties of Cu2O/Ag(x) samples were characterized by SEM, XRD and DRS(UV-Vis-NIR) analyzing methods. The results indicated that in the presence of metallic Ag the light absorption of Cu2O/Ag(x) samples was greatly extended to visible and near infrared wavelength region. With increasing molar ratio of Ag the absorption intensities of samples enhanced. This implies that Cu2O/Ag(x) composite catalysts exhibit strong absorption of sunlight. The photocatalytic performances of Cu2O/Ag(x) composite catalysts in the darkness were evaluated using methyl orange (MO) as a degradation target. The results showed that Cu2O/Ag(0.05) sample exhibited the highest photocatalytic activity, while the degradation rate of MO (30 mg?L-1) reached 89.2% in 120 min. Meanwhile, the photocatalytic mechanism in Cu2O/Ag composite catalyst system was proposed.

Keywords:

Degradation of methyl orange

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期刊类型引用(1)

1.

黄小燕, 古颖, 钟嘉豪, 陈可清, 万霞. 碱式铜盐包覆Cu_2O催化剂的形成机理及催化性能. 华南师范大学学报(自然科学版). 2019(02): 39-44 .

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