Hexagonally ordered microbowl arrays decorated with ultrathin CuInS2 nanosheets for enhanced photoelectrochemical performance

Photoelectric Bi2S3 Nanoparticle/Ti3C2Tx Nanosheet Heterojunction for Promotion of Nerve Cell Growth

“…To explain the reason for photocurrent enhancement, the light absorption capacity of the samples was first evaluated by detecting the UV–vis–NIR absorption spectra, and the results are displayed in Figure b. Clearly, Ti 3 C 2 T x presented excellent light absorption ability in the entire wavelength range, while Bi 2 S 3 only exhibited strong absorption at UV and visible light regions. , Compared with Bi 2 S 3 , the absorption spectrum of Bi 2 S 3 /Ti 3 C 2 T x appears to be a new absorption peak in the range of 650–900 nm, indicating that the absorption of NIR light has been enhanced, which is more conducive to capturing photon energy to generate a photocurrent. , Furthermore, the energy band gap ( E g ) of the photoelectric material could also affect the generation of the photocurrent . Therefore, the E g of Bi 2 S 3 and Bi 2 S 3 /Ti 3 C 2 T x were calculated by the Tauc relation (eq ).…”

“…The increase in binding energy means a decrease in the local electron density of Bi and S 34,35 Compared with Bi 2 S 3 , the absorption spectrum of Bi 2 S 3 /Ti 3 C 2 T x appears to be a new absorption peak in the range of 650−900 nm, indicating that the absorption of NIR light has been enhanced, which is more conducive to capturing photon energy to generate a photocurrent. 36,37 Furthermore, the energy band gap (E g ) of the photoelectric material could also affect the generation of the photocurrent. 38 Therefore, the E g of Bi 2 S 3 and Bi 2 S 3 / Ti 3 C 2 T x were calculated by the Tauc relation (eq 2).…”

Recent advances on three-dimensional ordered macroporous metal oxide-based photoelectrodes for photoelectrochemical water splitting

“…Compared with Cu 2 O, copper-based polycompounds offer more options for modifying the band structure and optoelectronic properties of materials. 107 CuCrO 2 , 114 CuFeO 2 , 107 CuInS 2 115 and CuBi 2 O 4 , 116 have attracted a lot of attention in this respect because the combinations of transition cations are able to be applied to control the optoelectronic properties. 111…”

CuInS2 Nanosheet Arrays with a MoS2 Heterojunction as a Photocathode for PEC Water Splitting

“…15 The heterojunction structure improves the conversion efficiency and allows the selection of semiconductors with a broad range of light absorption. Metal sulfides, like In 2 S 3 , 16 CdS, 17,18 ZnS, 19 at 0 V vs RHE) than pristine CuInS 2 electrode. 22 The Cu 2 O photocathode suffers from photocorrosion, which limits its faradaic efficiency for hydrogen evolution reaction (HER) (∼0.01%).…”

“…The heterojunction structure improves the conversion efficiency and allows the selection of semiconductors with a broad range of light absorption. Metal sulfides, like In 2 S 3 , CdS, , ZnS, and Sb 2 S 3 , have been widely used to construct heterojunctions with CIS because of their suitable band alignment for excited-state charge transfer. Ikeda et al fabricated a CZTS/CdS/In 2 S 3 /Pt photoelectrode for water splitting with a high photocurrent of −4.5 mA/cm 2 and a low onset potential.…”