Adsorption-enrichment and Localized-photodegradation of Bentonite-supported Red Phosphorus Composites

Abstract

The hydrothermally treated red phosphorus (HRP) was dispersed on exfoliated bentonite (EB) supporter to prepare the EB/HRP photocatalyst for improving photocatalytic performance. The as-synthesized samples were characterized by different methods. Rhodamine B was selected as the model pollutant to evaluate the photodegradation property of EB/HRP. Results showed that the photodegradation efficiency of the EB/HRP photocatalyst composite increased with increased EB mass fraction, and decreased after reaching the highest value. When the mass fraction of EB was 9%, the EB 9 /HRP photocatalyst composite exhibited the maximum adsorption performance and photodegradation activity. Its degradation rate constant k was 0.0641 min −1 , which was two times that of HRP. In addition, after five cycles of photodegradation experiments, EB 9 /HRP still had high photocatalytic activity (96.8%). Therefore, the EB 9 /HRP catalyst composite had good photocatalytic activity and stability, which can be an efficient

Formation of Fly Ash Catalysts and Selection of a Matrix Binder and Its Application in Denitration

“…So far, proven cumulative reserves have exceeded 5.087 billion tons, and the unreserved reserves are expected to exceed 7 billion tons. Compared with other types of binders, the catalyst prepared by adding bentonite to fly ash has high strength and low cost. − This method provides a new way to prepare denitration catalysts with extraordinary strength, high stability, and low cost …”