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XUEWANG ZHU1, XUEJIA TIAN1, RONG YIN1, QINGZHI LUO1, JING AN1, XUEYAN LI1, DESONG WANG1,2,*
- School of Sciences, Hebei University of Science and Technology, Shijiazhuang 050018, People’s Republic of China
- Metastable Materials Science and Technology State Key Laboratory, Yanshan University, Qinhuangdao, 066004, People’s Republic ofChina
A new strategy was developed for preparing Fe2O3/graphitic carbon nitride (Fe2O3/g-C3N4) composites exhibiting greatly promoted photocatalytic active under the condition of visible light. Ferric chloride solution was added into melamine solution with pH value of 2.0 at 90 °C, the solution was cooled to room temperature to prepare re-crystallized melamine containing a little Fe(III) compounds. The re-crystallized melamine underwent heating process at 550 °Cfor 2 h to prepare Fe2O3/g-C3N4composites. The as-prepared composites were analyzed through XPS, XRD, SEM, FT-IR. The photocatalytic active conditionof Fe2O3/g-C3N4was researched by photodegradation of Rhodamine B as irradiated by visible light. The facilitated absorption of light and significant photo-generated electron andholeseparation were realized through Fe2O3loading. The photocatalytic activity of Fe2O3/g-C3N4first increased and decreased as Fe2O3content increased. The Fe2O3/g-C3N4with Fe(III) compounds loading of 0.1 wt% exhibited the optimal photoactivity. The apparent rate constants of Fe2O3/g-C3N4composites were almost 12.1 times than pure g-C3N4. The Fe2O3/g-C3N4demonstrated noticeable stability and reusability..
Photocatalyst, Fe2O3,g-C3N4, Visible-light photocatalysis, Composites.
Submitted at: Nov. 16, 2019
Accepted at: Oct. 22, 2020
XUEWANG ZHU, XUEJIA TIAN, RONG YIN, QINGZHI LUO, JING AN, XUEYAN LI, DESONG WANG, A strategyfor preparation of Fe2O3/g-C3N4composites with efficient visible-light photocatalytic activity, Journal of Optoelectronics and Advanced Materials Vol. 22, Iss. 9-10, pp. 536-547 (2020)
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