Graphene oxide–CdS composite with high photocatalytic degradation and disinfection activities under visible light irradiation

Unveiling the photoelectrocatalytic inactivation mechanism of Escherichia coli : Convincing evidence from responses of parent and anti-oxidation single gene knockout mutants

“…Traditionally widely-used chlorinated disinfection techniques have been criticized for generating hazardous by-products (Kulkarni and Chellam, 2010). Photocatalytic (PC) technology based on semiconductors has been explored as a promising candidate for water disinfection, because of its solar-driven potential and self-cleaning capacity (Rincon and Pulgarin, 2007;Dalrymple et al, 2010;Foster et al, 2011;Gao et al, 2013;Shi et al, 2015). Semiconductors, like TiO 2, can absorb photon energy and generate hole (h þ ) and electron (e À ) pairs, subsequently reacting with H 2 O and O 2 to form reactive oxygen species (ROSs) such as OH, O 2 À , and H 2 O 2 .…”

Graphene‐Based Photocatalysts for Energy Applications: Progress and Future Prospects

“…In this context, graphene wrapping was particularly important to protect the photocatalysts from photocorrosion. Sun's group has demonstrated the preparation of various composite photocatalysts, including GO/CdS [108], GO/TiO 2 /Ag [109], and sulfonated GO/ZnO/Ag [110]. Under visible light, both composites showed enhanced efficiency and photostability in the inactivation of Escherichia coli when compared to their counterparts without adding GO.…”

Differences in photoelectrocatalytic inactivation processes between E. coli and its isogenic single gene knockoff mutants: Destruction of membrane framework or associated proteins?

“…Photocatalytic (PC) and photoelectrocatalytic (PEC) technologies have been studied extensively, and their applications to water disinfection are promising due to the solar energy-driven potential and self-cleaning capacity [1][2][3][4][5]. PC and PEC bacterial inactivation processes do not produce carcinogenic byproducts during disinfection, like conventional processes like chlorination do [6].…”