标題：Morphology-controlled fabrication of Ag3PO4/chitosan nanocomposites with enhanced visible-light photocatalytic performance using different molecular weight chitosan作者：Cao, Qihua; Xiao, Ling; Li, Jin; Cao, Chunhua; Li, Sheng; Wang, Jian

來源出版物：POWDER TECHNOLOGY 卷：292 頁碼：186-194 DOI: 10.1016/j.powtec.2016.02.003 出版年：MAY 2016

摘要：A series of Ag3PO4 and chitosan (CS) nanocomposites (Ag3PO4/CS) were prepared through in situ growth of Ag3PO4 with different molecular weight chitosan as adsorbent and soft-template. The structure and properties of as-prepared Ag3PO4/CS nanocomposites were characterized by XRD, FT-IR, FESEM, TEM, XPS, BET and UV-vis/DRS. The visible-light photocatalytic decolorization behavior of Ag3PO4/CS nanocomposites was investigated using methyl orange as a model pollutant. It was found that the morphology and photocatalytic decolorization activity of the nanocomposites significantly depended on the molecular weight of chitosan. The decolorization of methyl orange was ascribed to the synergistic effect of photocatalysis and adsorption. When Ag3PO4/CS nano composites were prepared in the presence of high molecular weight chitosan, Ag3PO4 particles with cubic or rhombic dodecahedron shape and about 200 to 550 nm in diameter were wrapped in chitosan. Meanwhile, when Ag3PO4/CS nanocomposites were fabricated using low molecular weight chitosan as soft-template, 150-400 nm flower-like spheres were obtained which were aggregated by a large number of nanoscale Ag3PO4 crystalline grains and connected by chitosan matrix. The special morphology of Ag3PO4/CS nanocomposites greatly increased the active surface area and the photocatalytic performance. The results in this study suggested that semiconductor photocatalysts with novel morphology and enhanced photocatalytic ability could be fabricated by using different molecular weight chitosan as soft-template.

入藏号: WOS:000372675700021

文獻類型：Article

語種：English

作者關鍵詞：Chitosan, Silver orthophosphate, Nanocomposite, Morphology-control, Photocatalysis

擴展關鍵詞：FACILE SYNTHESIS; IRRADIATION; AG; HETEROSTRUCTURES; DECOLORIZATION; DEGRADATION; STABILITY; RELEASE; RED

通訊作者地址：Xiao, L, Luojia Mt Wuchang, Wuhan *430072*, Hubei Province, Peoples R China.

電子郵件地址：xiaoling9119@whu.edu.cn

地址：

[Cao, Qihua; Xiao, Ling; Li, Jin; Li, Sheng; Wang, Jian] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

[Cao, Chunhua] Fianghan Univ, Key Lab Optoelect Chem Mat & Devices, Minist Educ, Coll Chem & Environm Engn, Wuhan 430056, Peoples R China.

研究方向：Engineering

ISSN：0032-5910

eISSN: 1873-328X

影響因子（2014）：2.349