Synergy between AgInS2 quantum dots and ZnO nanopyramids for photocatalytic hydrogen evolution and phenol degradation

The transparent photovoltaic NiO/TiO2 orderly nanoarray pn junction via synergism of AgInS2 quantum dots and Ti3+ self-doping

“…Furthermore, the lattice spacing of 0.323 nm is attributed to the (006) plane of AgInS 2 . [53][54][55] HRXPS was used to confirm the chemical valences of different elements, especially the increased Ti 3+ /O v . As demonstrated in Ti 2p (Fig.…”

“…Thus, it is easy to form a metal-sulfur bond to improve the stability of the AgInS 2 QDs modification. 54,55 Furthermore, the FT-IR (ESI † Fig. S3) with no obvious vibration absorption indicate that the precursor has been thoroughly removed.…”

“…[37][38][39] Because of the lower concentration of AgInS 2 QDs and weak crystallinity of the NiO film, their characteristic diffraction peaks are hardly observed in the formed AgInS 2 QDs/NiO/Ti 3+ -TiO 2 pn junction. However, two diffraction peaks at 27.49 and 46.451 can be observed in the single AgInS 2 QDs, and are attributed to the (006) and ( 018) planes (PDF#01-075-2379), [52][53][54][55] respectively. Additionally, with the deposition of the NiO film and AgInS 2 QDs, the diffraction peaks are consistent with those of the as-prepared TiO 2 nanoarrays.…”

“…52,53 Martinez et al used the AgInS 2 QDs to promote the photocatalytic HER and photodegradation. 54 Furthermore, the Liu group used Zn-doped AgInS 2 QDs to achieve Cu 2+ detection. 55 Moreover, a silver indium sulfide solid solution with abundant active S atoms can form metallic-sulfur bonds to improve the modification stability, 56 thus meeting the requirements of long-term usage.…”

Post-cyclization of a bisimine-linked covalent organic framework to enhance the performance of visible-light photocatalytic hydrogen evolution

“…3,4 The generation of hydrogen with photocatalytic water splitting has attracted extensive attention due to its renewable nature. [5][6][7][8] Since TiO 2 has been reported as a photocatalyst for water splitting, 9 various metal-based photocatalysts have been explored, such as CdS, 10 MoS 2 , 11 ZnO, 12 and Cu 2 O, 13 which gradually push the absorption edge toward the visible light range. Compared with metal-based semiconductors, nonmetal-based semiconductors are also promising candidates, which offer tunable band-gap and intense absorbance of visible light.…”