Recent developments in lead-free bismuth-based halide perovskite nanomaterials for heterogeneous photocatalysis under visible light

Abstract

Halide perovskite materials, especially lead-based perovskites, have been widely used for optoelectronic and catalytic applications. However, the high toxicity of lead element is a major concern that directs the research...

Research progress and perspectives on photocatalysts based on the lead-free double halide perovskite

“…(6) Electron–hole pairs can recombine with each other, generating energy in the form of fluorescence or heat within nanoseconds. 78,79…”

Seeking environmentally friendly halide perovskite photocatalysts: synthesis, structure and photocatalytic performance exploration

“…Naturally, Bi-based halide perovskites and Pb-based perovskites exhibit equally excellent optoelectronic properties. 42–44 On the other hand, Bi is a typical non-toxic metal, and bismuth coordination complexes are already used in over-the-counter drugs such as Pepto-Bismol. 45 Hereby, Bi-based HPs are suitable to be used as an environmentally friendly photocatalyst.…”

Nanostructured Metal Chalcohalide Photocatalysts: Crystal Structures, Synthesis, and Applications

“…Inorganic semiconducting nanostructured materials have been extensively studied for decades as heterogeneous photocatalysts for solar energy harvesting. − Among these, carbon-based materials, − metal–organic frameworks, − metal oxides, ,− chalcogenides, − chalcopyrites, − kesterites, − perovskites, − and oxyhalides − remained in the forefront. Developments of such new materials, along with studies of their crystal structures and optical bandgaps, are also continuing, in order to meet the current challenges of harvesting energy while providing environmental remedies.…”