Recent Strategies for Hydrogen Peroxide Production by Metal-Free Carbon Nitride Photocatalysts

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Torres-Pinto, A (Autor) Outra; Sampaio, M.J. (Autor) FEUP; Claudia G Silva (Autor) FEUP; Joaquim Luís Faria (Autor) FEUP; Silva, Adrian (Autor) FEUP

Revista

Título: Catalysts

Vol. 252

Página Final: 990

ISSN: 2073-4344

Editora: MDPI

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 15 Citações

Projetos Associados

LED-NETmix - LED-NETmix: um fotoreator inovador para a intensificação de processos em síntese química

MicroPhotOGen - Dispositivos foto-eletroquímicos microfluídicos para oxigenação do sangue

InSpeCt - Identifying and interrupting micropollutants of EU concern by using Smart Carbon materials

Outras Informações

ID Authenticus: P-00R-CJE

DOI: 10.3390/catal9120990

Abstract (EN): <jats:p>Hydrogen peroxide (H2O2) is a chemical which has gained wide importance in several industrial and research fields. Its mass production is mostly performed by the anthraquinone (AQ) oxidation reaction, leading to high energy consumption and significant generation of wastes. Other methods of synthesis found in the literature include the direct synthesis from oxygen and hydrogen. However, this H2O2 production process is prone to explosion hazard or undesirable by¿product generation. With the growing demand of H2O2, the development of cleaner and economically viable processes has been under intense investigation. Heterogeneous photocatalysis for H2O2 production has appeared as a promising alternative since it requires only an optical semiconductor, water, oxygen, and ideally solar light irradiation. Moreover, employing a metal-free semiconductor minimizes possible toxicity consequences and reinforces the sustainability of the process. The most studied metal¿free catalyst employed for H2O2 production is polymeric carbon nitride (CN). Several chemical and physical modifications over CN have been investigated together with the assessment of different sacrificial agents and light sources. This review shows the recent developments on CN materials design for enhancing the synthesis of H2O2, along with the proposed mechanisms of H2O2 production. Finally, the direct in situ generation of H2O2, when dealing with the photocatalytic synthesis of added-value organic compounds and water treatment, is discussed.</jats:p>

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 24