期刊論文

學年 112
學期 2
出版（發表）日期 2024-07-29
作品名稱 Synergistically enhanced photocatalytic properties of Co3O4-G/GO nanocomposites: unravelling their interactions and charge-transfer dynamics using XAS
作品名稱（其他語言）
著者 Ankit Kadian; V. Manikandan; C. L. Chen; C. L. Dong; S. Annapoorni
單位
出版者
著錄名稱、卷期、頁數 Dalton Transactions 53(32), p.13550-13565
摘要 Metal oxide composites with graphene/graphene oxide have increasingly gained popularity in enhancing the photocatalytic degradation of several existing harmful dyes. Moreover, identifying the role of carbon networks and their interactions in composite formation would assist in the design and development of photocatalysts. In the present study, we investigated the role of carbon networks in improving photocatalytic properties. Electronic structure analysis of cobalt oxide–graphene (C2)/graphene oxide (C3) nanocomposites using XAS suggested possible charge transfer from cobalt oxide nanoparticles to the carbon network during composite formation. The photocatalytic degradation of C3 towards phenol dye (1 × 10−3 M) was >50% and improved the degradation rate with k = 0.231 h−1.In the quest to understand the mechanism unfolding on its surface, in situ XAS under UV–visible irradiation was performed, which shed light on delayed excitonic recombination in the synthesized nanocomposites. This enabled hydroxy radicals (˙OH) to play a preeminent role in the cleavage of the phenol ring and its intermediaries. Based on these observations, a detailed mechanism for charge transfer occurring during nanocomposite formation and the mechanism involved in the enhanced photocatalytic activity of the nanocomposite photocatalyst towards phenol degradation under the influence of UV–visible irradiation are discussed.
關鍵字
語言 en
ISSN 1477-9226; 1477-9234
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/127611 )