Kinetic studies of catalytic reduction of 4-nitrophenol with NaBH4 by means of Au nanoparticles dispersed in a conducting polymer matrix

被引：58

作者：

Fedorczyk, Agata ^{[1
]}

Ratajczak, Jacek ^{[2
]}

Kuzmych, Oleksandr ^{[1
]}

Skompska, Magdalena ^{[1
,3
]}

机构：

[1] Univ Warsaw, Lab Electrochem, Fac Chem, PL-02093 Warsaw, Poland

[2] Inst Electr Mat Technol, PL-02668 Warsaw, Poland

[3] Univ Warsaw, Fac Chem, Biol & Chem Res Ctr, PL-02089 Warsaw, Poland

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2015年 / 19卷 / 09期

关键词：

Catalytic reduction of 4-nitrophenol; Au nanoparticles; Conducting polymer; Composite materials; Zero-order and first-order kinetics; GOLD NANOPARTICLES; HYDROGEN GENERATION; SODIUM-BOROHYDRIDE; HYDROLYSIS; SILVER; SHELL; SIZE; NANOCOMPOSITES; NANOSTRUCTURE;

D O I：

10.1007/s10008-015-2933-5

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this work, we present a method of obtaining of effective catalytic system composed of conducting polymer, poly(1,8-diaminocarbazole) (PDACz), with Au nanoparticles (AuNPs) of diameter 2 nm uniformly dispersed in the polymer matrix. Reduction of 4-nitrophenol (4-NPh) by NaBH4 with the use of this catalyst was studied by means of UV-Vis spectroscopy. It was shown that the catalytic reaction obeys either pseudo-zero-order or first-order kinetics, depending on the concentration of 4-NPh in the solution at excessive amount of borohydride. The catalytic activity of PDACz/AuNP system is discussed in terms of amount of deposited nanoparticles and the number of consecutive catalytic cycles. The kinetic data are correlated with scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images of the system before and after catalytic process.

引用

页码：2849 / 2858

页数：10

共 45 条

[31] Photochemical Green Synthesis of Calcium-Alginate-Stabilized Ag and Au Nanoparticles and Their Catalytic Application to 4-Nitrophenol Reduction [J].