ZnIn2S4 flowerlike microspheres embedded with carbon quantum dots for efficient photocatalytic reduction of Cr(VI)

ZnIn2S4‐Based Photocatalysts for Energy and Environmental Applications

“…As a result, the CQDs-ZnIn 2 S 4 nanocomposite showed higher photocatalytic activity for the degradation of tetracycline hydro chloride under ultraviolet (UV), visible, nearinfrared (NIR) light, and simulated solar light irradiation. In addition, 0D-3D CQDs-ZnIn 2 S 4 nanoflower composites have also exhibited the enhanced photocatalytic activities for Cr(VI) reduction, [274] H 2 evolution, [275] methyl orange degradation, [276] and selective hydrogenation of nitrobenzene. [277] ZnIn 2 S 4 -Carbon Fibers: Carbon fibers, stateoftheart mate rials that have been developed for almost 40 years, are popular catalytic materials owing to their light weight, high strength, outstanding flexibility, high electrical conductivity, and chemical stability.…”

“…Nonetheless, the easy recombination of the photogenerated electron-hole pairs of pure ZnIn 2 S 4 hinders its further improvement of photocatalytic activity for the reduction of Cr (VI). Therefore, in order to obtain better activity for Cr (VI) reduction, several ZnIn 2 S 4 based binary or ternary heterojunction photocatalysts have been constructed in recent years, including CdS nanorod@ZnIn 2 S 4 nanosheet, [122] Co 9 S 8 nanorod@ZnIn 2 S 4 nanosheet, [37] 3D SnS 2 /ZnIn 2 S 4 , [150] MoS 2 /ZnIn 2 S 4 , [135] WS 2 /ZnIn 2 S 4 , [148] In 2 O 3 nanofibers@ ZnIn 2 S 4 nanosheet, [456] hollow SnO 2 nanotubes@ZnIn 2 S 4 , [184] TiO 2 /ZnIn 2 S 4 , [457] AgVO 3 /ZnIn 2 S 4 , [208] nitrogendoped hollow carbon spheres@ZnIn 2 S 4 , [285] ZnIn 2 S 4 flowerlike micro spheres/embedded carbon quantum dots, [274] UiO66NH 2 @ ZnIn 2 S 4 nanosheets, [232] UiO66/ZnIn 2 S 4 flowerlike 3D micro spheres, [237] MIL88A(Fe) nanorod@ZnIn 2 S 4 nanosheet, [233] MIL125(Ti)/ZnIn 2 S 4 , [239] 3D netted ZnIn 2 S 4 /cellulose nanofi brils, [458] Bi 2 S 3 /BiOCl@ZnIn 2 S 4 , [319] UiO66(COOH) 2 /ZnIn 2 S 4 / MoS 2 , [386] Fe 3 O 4 @SiO 2 @TiO 2 @ZnIn 2 S 4 /ZnPc, [459] 2D/2D ZnIn 2 S 4 /Bi 2 MoO 6 , [460] and 3D hollow MXene@ZnIn 2 S 4 . [309]…”

Biomass-derived Carbon Quantum Dots for Visible-Light-Induced Photocatalysis and Label-Free Detection of Fe(III) and Ascorbic acid

“…The fabrication of these PL probes has potential significance owing to their simple, real-time, and economic strategy with high accuracy 31,32 . Although metal ions are crucial for life and the environment, they are toxic to living organisms, including humans, at elevated concentrations 31–33 , so the detection of metal ions is important. The selective detection of Fe(III) is especially vital as it is one of the most essential elements for biological processes and living organisms 34 .…”

Synergy of Cd Doping and S Vacancies in CdxZn1–xIn2S4 Hierarchical Nanotubes for Highly Improved Visible-Light-Driven H2 Evolution

“…On the other hand, the band gap of these four samples was determined employing the Kubelka–Munk formula (eq 1): ( Ah ν) n = K ( h ν – E g ) ( A : absorbance, h ν: photon energy, K : constant, E g : band gap, n equals 0.5 and 2 for indirect- and direct-transition semiconductor, respectively) . Since ZnIn 2 S 4 belongs to a direct-transition semiconductor, , the Tauc plots in Figure b reveal that the band gap of ZIS NFs is equal to 2.82 eV, and the band gap of Cd-doped ZIS (C 0.09 ZIS) NFs is narrowed to 2.75 eV. In comparison with C 0.09 ZIS NFs, the ZIS and C 0.09 ZIS NTs are in possession of substantially reduced band gaps of 2.65 and 2.56 eV, respectively.…”