Photon and vibration synergism on planar defects induced 2D-graphitic carbon nitride for ultrafast remediation of dyes and antibiotic ampicillin

Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C3N4 Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

“…The synthesis methods of catalysts, i.e., bulk- g -C 3 N 4 and 2D- g -C 3 N 4 NS, were described in our previous works and briefly presented in the Supporting Information. − …”

One-Step Fabrication of the ZnO/g-C3N4 Composite for Visible Light-Responsive Photocatalytic Degradation of Bisphenol E in Aqueous Solution

“…Recently, g-C 3 N 4 has received great attention as an interesting photocatalyst for wastewater detoxification, hydrogen production, and photoreduction of CO 2 under visible light irradiation. Pure g-C 3 N 4 possesses a moderate band gap of ∼2.7 eV, which enables it to be excited by visible light up to 460 nm. − Furthermore, metal-free g-C 3 N 4 has several features required for photocatalysis reactions, such as a π-conjugated electronic structure, layered crystal structure, low cost, nontoxic nature, high chemical and thermal stability, high electron conductivity, and facile fabrication. ,− However, the photocatalytic efficiency of g-C 3 N 4 is greatly reduced because of the low quantum efficiency and fast recombination rate of the photogenerated electron–hole pairs. , Hence, to reduce the drawbacks of g-C 3 N 4 , several methods such as coupling with metal organic frameworks, covalent organic frameworks and other semiconductors (metal oxides and metal sulfides), doping with elements, and monitoring its structure and morphology have been proposed. ,− For instance, Kuila et al reported the synthesis of cerium ion-adsorbed g-C 3 N 4 for enhancing the photocatalytic degradation of methylene blue dye under sunlight irradiation . de Sousa et al prepared a ternary photocatalyst of ZnO/g-C 3 N 4 /carbon xerogel, which was used in efficient photocatalytic degradation of 4-chlorophenol under visible light irradiation .…”

“… 14 , 23 Hence, to reduce the drawbacks of g-C 3 N 4 , several methods such as coupling with metal organic frameworks, covalent organic frameworks and other semiconductors (metal oxides and metal sulfides), doping with elements, and monitoring its structure and morphology have been proposed. 19 , 24 − 27 For instance, Kuila et al reported the synthesis of cerium ion-adsorbed g-C 3 N 4 for enhancing the photocatalytic degradation of methylene blue dye under sunlight irradiation. 28 de Sousa et al prepared a ternary photocatalyst of ZnO/g-C 3 N 4 /carbon xerogel, which was used in efficient photocatalytic degradation of 4-chlorophenol under visible light irradiation.…”

The Role of the Ferroelectric Polarization in the Enhancement of the Photocatalytic Response of Copper-Doped Graphene Oxide–TiO2 Nanotubes through the Addition of Strontium

“…1−3 Among the various applied semiconductors used in photocatalysis, titanium dioxide (TiO 2 ) shows a high photocatalytic efficiency and a strong oxidizing ability for the photodegradation of several pollutants and for the disinfection of various harmful compounds in both water and air applications. 4,5 However, TiO 2 presents two main drawbacks: (1) a large band gap (3.2 eV for anatase) leading to activation only in the UV range (λ < 385 nm) and therefore limiting its photoabsorption ability to only a small fraction of solar light (about 3−4%) and, (2) a quite high recombination rate of electron−hole pairs. These drawbacks limit the practical application of TiO 2 .…”

“…Photocatalysis is a very effective advanced oxidation process (AOP) used to remove pollutants present in wastewater or the atmosphere. Photocatalysis can also be employed for the production of green energy (e.g., H 2 and C 1 production) or for the conversion of biomass sources. − Among the various applied semiconductors used in photocatalysis, titanium dioxide (TiO 2 ) shows a high photocatalytic efficiency and a strong oxidizing ability for the photodegradation of several pollutants and for the disinfection of various harmful compounds in both water and air applications. , However, TiO 2 presents two main drawbacks: (1) a large band gap (3.2 eV for anatase) leading to activation only in the UV range (λ < 385 nm) and therefore limiting its photoabsorption ability to only a small fraction of solar light (about 3–4%) and, (2) a quite high recombination rate of electron–hole pairs. These drawbacks limit the practical application of TiO 2 . , Considerable efforts have then been made in extending its photoabsorption to visible light through doping and codoping by metals and/or nonmetals, coupling with metal oxides or through acid inorganic treatment of TiO 2 . ,− Similarly, the rate of recombination of photogenerated carriers can be decreased by changing the morphology of titanium oxide to one-dimensional (1D) materials (films, tubes, wires, and rods), − by doping with earth metals − (La and Ce) or by combining TiO 2 with nanostructured carbon materials such as fullerenes, polyhydroxyfullerene, carbon nanotubes, or graphene oxide (GO) to form carbon–TiO 2 composites. − The design of cerium-doped TiO 2 nanomaterials with tuned structural and textural properties was previously reported .…”