"Alternated cooling and heating" strategy enables rapid fabrication of highly-crystalline g-C3N4 nanosheets for efficient photocatalytic water purification under visible light irradiation

Pharmaceuticals and personal care products in water and wastewater: a review of treatment processes and use of photocatalyst immobilized on functionalized carbon in AOP degradation

“…However, their application in environmental remediations are limited by several obstacles such as low specific surface area, the high recombination rate of charge carrier and low electrical conductivity, hence the need to develop a modified g-C 3 N 4 -based heterojunction photocatalyst with improved physicochemical properties that can be applied in the degradation of organic pollutants in the environment [231,232]. The modification can be achieved through exfoliation of bulk g-C 3 N 4 into nanosheet, nanotubes and quantum dots, deposition of noble metal, doping with metal, coupling with other semiconductors such as TiO 2 , ZnO, Ag 2 O, MoS 2 , incorporating with carbonaceous materials like; activated carbon, graphene oxides, reduced graphene oxide, carbon nanotubes, and many others to form nanocomposites [233][234][235].…”

Stitching Graphene Sheets with Graphitic Carbon Nitride: Constructing a Highly Thermally Conductive rGO/g-C3N4 Film with Excellent Heating Capability

“…Wu et al 18 fabricated a g-C 3 N 4 /nanofiber cellulose thermal conducting membrane filler to enhance the thermal conductivity of PDMS with a thermal conductivity of 1.94 W m −1 K −1 . It is significant to highlight the merits of g-C 3 N 4 as a linker bonding adjacent graphene sheets: (1) because of the abundant −NH 2 and −COOH in precursor materials (melamine and GO), g-C 3 N 4 will covalently connect adjacent graphene nanosheets through a simple dehydration reaction and the layered stacking of the rGO film will not be impaired owing to the unique graphene-like structure of g-C 3 N 4 ; (2) g-C 3 N 4 as a semiconductor with a band gap of 2.7 eV 22 will reduce the electrical conductivity of the rGO film, allowing its use in some electronic fields with the requirement of electrical insulation. Hence, stitching graphene with g-C 3 N 4 can effectively meliorate the thermally conductive performance of the rGO film and endow it new features such as the response to light and electricity based on the semiconductor nature of g-C 3 N 4 .…”

Harnessing Photocatalytic and Photothermal Effects of C-Doped Graphitic Carbon Nitride for Efficient Bacterial Disinfection

“…The band gap is around 2.7 eV, which allows the absorption of visible light (λ ≥ 420 nm) . Moreover, various morphologies such as quantum dots, nanosheets, and three-dimensional porous structures can be obtained via the self-assembly of precursors or the postetching process. − Until now, graphitic carbon nitride nanomaterials have demonstrated disinfection properties under the irradiation of visible light. ,,− The major challenge is that the quantum efficiency is still rather low due to the fast recombination of photoexcited charge carriers. Doping with various elements or carbon-ring structures is an important way to separate the electron–hole pairs. − However, relatively little research has been conducted on the synchronous photothermal effect toward efficient visible-light-activated water disinfection.…”