Photovoltaic and photocatalytic properties of bismuth oxyiodide–graphene nanocomposites

Abstract

BiOI nanoflakes grown by air atmosphere chemical vapor deposition showed increased photocatalytic activity when deposited on a graphene coated substrate.

TiO2/Bi5O7I nanocomposite for photoanode of electrochemical cell

“…By this result, we can differentiate between anatase and rutile phase in TiO 2 since both peaks do not overlap. From the d-spacing calculation, we obtained 0.30 nm; 0.316 nm; and 0.353 nm for tetragonal BiOI, orthorhombic Bi 5 O 7 I, anatase TiO 2 which indicate the (102); (312); (101) crystal planes and those interplanar distance of lattice spacing matched to the previous reports[22][23][24]. The determination of d-spacing considers to the Bragg's law, λ = 2d sinθ, where λ is X-ray wavelength with Cu Kα radiation, d is interplane spacing, and θ is the Bragg angle.…”

Bimetallic core–shell nanoparticle arrays at liquid–liquid interface for the degradation and monitoring of dye pollutants in situ by surface-enhanced Raman spectroscopy

“…Currently, there are numerous technologies for industrial wastewater treatment. [2][3][4] Titanium dioxide, 5 graphene, 6 and other materials have achieved effective degradation of dyes, but the technology to detect the degradation process must be prepared separately. Conventional analytical methods, such as Fourier transform infrared spectroscopy (FTIR), 7,8 uorescence spectroscopy, 9 high-performance liquid chromatography (HPLC), 10,11 and X-ray photoelectron spectroscopy (XPS) 12,13 are oen used to monitor the dye degradation process, but they have strict requirements on dye concentration and are limited by complex pretreatment process, time-consuming process, high cost, and lack of sensitivity and specicity.…”

Membraneless, self-powered immunosensing of a cardiac biomarker by exploiting a PEC platform based on CaBi2Ta2O9 combined with bismuth oxyiodides

“…Some semiconductors based on bismuth oxyiodides (Bi x O y I z ) have received signicant attention owing to their exquisite properties, including their layered structure, 7 special internal electrostatic eld, 8 visible-light-driven photoactivity, and tunable band gap. 7,8 Thus, materials based on Bi x O y I z have recently been applied to the development of sensors, 9 photocatalytic degradation of species under light irradiation, 7,10,11 photovoltaic applications, 12 and photoelectrochemical water splitting. 13 Therefore, the combined use of CaBi 2 TaO 9 and bismuth oxyiodides can open a novel perspective in terms of tuning the properties of semiconductors to photoelectrochemical applications, thus making it possible to nd the best photoelectrochemical platform for exploiting these materials in the development of highly sensitive immunosensors.…”