Effect of Al(OH)_(3) prepared from fly ash on the structural and catalytic properties of g-C_(3)N_(4)-based materials  

作　　者：Qingbo Yu Xianhua Li Qingping Wang 

机构地区：[1]The First Affiliated Hospital of Anhui University of Science and Technology(Huainan First People's Hospital),Anhui University of Science and Technology,Huainan 232001,China [2]Anhui Industrial Generic Technology Research Center for New Materials from Coal-based Solid Wastes,Huainan 232001,China [3]School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第10期44-51,共8页中国化学工程学报（英文版）

基　　金：supported by the Medical Special Cultivation Project of Anhui University of Science and Technology(YZ2023H2B012,YZ2023H2B013);the Anhui Provincial Key Research and Development Project(2022i01020015);the University Synergy Innovation Program of Anhui Province(XT-2022-083,GXXT-2023-019);National Natural Science Foundation of China(52227901).

摘　　要：In order to find the optimal combination method of secondary utilization of fly ash and graphite-phase carbon nitride(g-C_(3)N_(4))modification,an efficient composite photocatalyst of γ-Al_(2)O_(3)/g-C_(3)N_(4)was obtained by calcining the composite precursors of Al(OH)3/dicyandiamide(DCDA).The introduction of Al(OH)_(3)prepared by combining fly ash into the precursors causes hydrogen-bonding interactions between Al(OH)_(3)and DCDA,which facilitate the removal of N atoms from the edges of the CN framework of g-C_(3)N_(4)during condensation,and the composites prepared possess more cyano defects.In addition,γ-Al_(2)O_(3)and g-C_(3)N_(4)form a chemical bond at the interface,and this chemical bonding causes the density of the electron cloud in the vicinity of the N atoms to increase.Among them,the strongest chemical bonding between Al_(2)O_(3)and g-C_(3)N_(4)was observed in ACN-1,whereas the most cyanine defects were formed in ACN-1,which made ACN-1 exhibit the best photocatalytic degradation of methylene blue,which is 2.48 times higher than that of the pristine g-C_(3)N_(4).

关 键 词：Precursors g-C_(3)N_(4) Waste treatment CATALYST Synthesis 

分 类 号：X505[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]