Hybrid ZnO:Ag core-shell nanoparticles for wastewater treatment : Growth mechanism and plasmonically enhanced photocatalytic activity

Bioinspired ZnO-Based Solar Photocatalysts for the Efficient Decontamination of Persistent Organic Pollutants and Hexavalent Chromium in Wastewater

“…The same tendency occurred when natural sunlight was used as the light source. Importantly, the catalytic performance of ZnO@ZnS micro/nanoferns in the photoremediation of MB, 4-NP, or Rh-B was comparable to or better than that of the most competitive state-of-the-art ZnO photocatalysts [27][28][29][30][31][32][33].…”

Tunable Piezophotonic Effect on Core-Shell Nanoparticles Prepared by Laser Ablation in Liquids under External Voltage

“…e energy band diagrams of the PZT@ Au core@ shell NPs interfaces are shown in Figure 12. e vacuum levels derived from the work functions for typical PZT and metal Au are about 5.8 and 5.1 eV, respectively, with an ionization potential of PZT of 6.8 eV [13,42]. e possible band bowing in the PZT substrate is not shown in the graphs.…”

“…Here, E CB , E F , and E VB are the conduction band, Fermi level, and valence band of PZT, respectively. e Fermi-level position at the PZT/Au interface has been determined utilizing a combination of metal work function and PZT electron a nity, E F − E VB 1.8 eV, by the barriers for the injections of electrons (Φ Bn E CB − E F ) and holes (Φ Bp E F − E VB ) [13,42]. Irradiating with the visible light, within the energy gap of semiconductors, such as the laser light of 532 nm, leads to absorption of photons and generates an electric eld at the Schottky barrier which forces the photogenerated e − and h + to isolate in opposite directions.…”

Dual functional oyster shell-derived Ag/ZnO/CaCO3 nanocomposites with enhanced catalytic and antibacterial activities for water purification

“…Until now, a variety of semiconductors, including ZnO, CuO as well as NiO, have been developed for the treatment of a wide range of organic/ inorganic contaminants and pathogenic microorganisms from wastewater. [7][8][9][10][11][12] Among these materials, ZnO is considered one of the most promising emerging semiconductors, and features advantages in terms of low cost, broad-spectrum, and environmental friendliness. 13,14 In particular, the suitable redox potential of ZnO makes it degrade the majority of harmful pollutants from wastewater.…”