Facile one-pot synthesis of bimodal mesoporous carbon nitride and its function as a lipase immobilization support
Facile one-pot synthesis of bimodal mesoporous carbon nitride and its function as a lipase immobilization support
复制标题
双峰介孔氮化碳的简便一锅合成及其作为脂肪酶固定化载体的功能
DOI：
10.1039/c0jm03666h
复制
发表时间：
2011-01-01
影响因子：
--
通讯作者：
Fan, Weibin
中科院分区：
文献类型：
--
作者：
Shen, Wenzhong;Ren, Liwei;Fan, Weibin
以Triton X-100为模板剂，三聚氰胺和戊二醛为前驱体，通过聚合反应和碳化反应合成了双峰介孔氮化碳。通过氮吸附等温线、热重分析、红外光谱和扫描电子显微镜对氮化碳的结构和表面化学性质进行了表征和比较。结果表明，氮化碳中的中孔尺寸集中在3.8nm和10-40 nm。聚合物的热解和分解以形成缩合交联环结构在350-700 °C下发生。氮化碳中的氮原子以C-N和N-H状态存在。作为Candida rugosalipase固定化载体，介孔氮化碳具有较高的固定化量，提高了Candida rugosalipase的热稳定性，4次运行后仍具有较高的催化活性。
Bimodal mesoporous carbon nitride is synthesized using Triton X-100 as a template and melamine and glutaraldehyde as precursors through polymerization and carbonization. The structures and surface chemical properties of carbon nitrides are characterized and compared by nitrogen adsorption isotherms, TG, FT-IR spectra and SEM images. The results show that the mesopore sizes in the carbon nitride are centered at 3.8 nm and 10–40 nm. The pyrolysis and decomposition of the polymer to form the condensation cross-linking ring structures takes place at 350–700 °C. The nitrogen atom in the carbon nitride exists in C–N and N–H states. As a Candida rugosalipase immobilization support, the mesoporous carbon nitride displays a higher amount of immobilization and improves the thermal stability of Candida rugosalipase, which still displays higher catalytic activity after 4 runs.