An Emerging Visible-Light Organic–Inorganic Hybrid Perovskite for Photocatalytic Applications

Abstract

The development of visible-light active photocatalysts is a current challenge especially energy and environmental-related fields. Herein, methylammonium lead iodide perovskite (MAIPb) was chosen as the novel semiconductor material for its ability of absorbing visible-light. An easily reproducible and efficient method was employed to synthesize the as-mentioned material. The sample was characterized by various techniques and has been used as visible-light photocatalyst for degradation of two model pollutants: rhodamine B (RhB) and methylene-blue (MB). The photo-degradation of RhB was found to achieve about 65% after 180 min of treatment. Moreover, the efficiency was enhanced to 100% by assisting the process with a small amount of H2O2. The visible-light activity of the photocatalyst was attributed to its ability to absorb light as well as to enhance separation of photogenerated carriers. The main outcome of the present work is the investigation of a hybrid perovskite as photocatalyst for wastewater treatment.

Recent Progresses on Metal Halide Perovskite-Based Material as Potential Photocatalyst

“…Lead-based MHPs emerged as visible light photocatalysts, applied in the degradation of other organic dye contaminants such as rhodamine B (RhB). The efficiency was found to be enhanced in the presence of assistant oxidants, such as H 2 O 2 , and the evidence of reactive oxygen species production was defined [182]. Lead-free hybrid MHPs have been prepared by replacing lead with cadmium, a non-toxic 6p-block element, leading to higher stability, increased charge-carrier lifetimes, and lower charge carriers recombination rates [183].…”

Complex Catalytic Materials Based on the Perovskite-Type Structure for Energy and Environmental Applications

“…Important quantities of this organic dye are coming from the textile industry contributing to environmental pollution [275][276][277][278]. Equally, methyl orange (anionic dye) and methylene blue (cationic dye) are considered harmful dyes released from textiles and printing industries and it is desired to minimise as much as possible their concentration in the environment [279][280][281][282][283][284]. Besides these, other common organic pollutants targeted in photodegradation applications are congo red (highly toxic and carcinogenic pollutant) [285], neutral red [286], phenol red [287], 4-methylphenol [288] and tetracycline [289], their chemical structures being presented in Table 12.…”

Advances in Heterocatalysis by Nanomaterials

“…Under the same purpose, Bresolin et al [25], based on its ability to absorb visible light, synthesized a methylammonium lead iodide perovskite (MAIPb), which was evaluated as a visible-light photocatalyst for the degradation of two model pollutants, rhodamine B (RhB) and methylene blue (MB). An approximately 65% photodegradation of RhB was achieved after 180 min of treatment, while the efficiency was enhanced up to 100% by assisting the process with a small amount of H 2 O 2 .…”