Critical review of advanced oxidation processes in organic wastewater treatment.

A state-of-the-art review on indoor air pollution and strategies for indoor air pollution control.

Carbon deposit during the catalytic oxidation of volatile organic compounds (VOCs) is a key factor to restrict long-term stability of catalysts. Herein, a modified ordered porous catalyst with high coke-resistance performance was developed by introducing oxygen vacancies (OVs) into CeO2 through simple redox and steam treatment (ARCeO2), and applied in efficiently photothermocatalytic degradation of VOCs. Abundant OVs in ARCeO2 leads to enhanced light absorption, improved charge separation and increased reactive oxygen generation, and then promote its photothermocatalytic performance. Moreover, no obvious decrease was observed in the photothermocatalytic activity of ARCeO2 at 200 °C for 25 h reaction. Its superior photothermocatalytic stability can be attributed to the less intermediates and limited coke accumulation onto ARCeO2. This work provides a facile and cost-effective strategy for the design and fabrication of CeO2 catalyst with strong coke-resistance potential and highlights the significance of OVs engineering for improving the photothermocatalytic performance of VOCs degradation.

Introduce oxygen vacancies into CeO2 catalyst for enhanced coke resistance during photothermocatalytic oxidation of typical VOCs

Hybrid materials for heterogeneous photocatalytic degradation of antibiotics

Development of efficient and stable catalyst for the degradation of chlorinated volatile organic compounds (VOCs) is a hot research topic. In this study, we used plastic-based terephthalic acid for the synthesis of MIL-125, which further modified by the -NH2 and -NO2 groups. DFT calculations revealed that the N orbitals had an important contribution in reducing the band gap, leading to easier hydrogen absorption and high electron transfer efficiency. Optical studies, XPS, TRES, NH3-TPD and pyridine IR further demonstrated that the amino modification promoted the visible absorption range and acidity of MIL-125 in comparison to the nitro modification, resulting in efficient catalytic degradation of chlorobenzene and toluene, even in the presence of water. This work provides an economically feasible strategy for modifying metal organic frameworks (MOFs) and suggests the possible VOCs degradation pathways with EPR, in situ FTIR, GC-MS and TG-MS analysis. 

Synthesis of acidic MIL-125 from plastic waste: Significant contribution of N orbital for efficient photocatalytic degradation of chlorobenzene and toluene

Titanium oxide based photocatalytic materials development and their role of in the air pollutants degradation: Overview and forecast.

Efficient photocatalytic oxidation of gaseous toluene over F-doped TiO2 in a wet scrubbing process

Efficient photocatalytic oxidation of gaseous toluene in a bubbling reactor of water.

Mechanistic insights into complete oxidation of chlorobenzene to CO2 via wet scrubber coupled with UV/PDS

Simultaneous removal of multiple indoor-air pollutants using a combined process of electrostatic precipitation and catalytic decomposition

Yuxuan Zeng

Papers

Titanium oxide based photocatalytic materials development and their role of in the air pollutants degradation: Overview and forecast.

Efficient photocatalytic oxidation of gaseous toluene over F-doped TiO2 in a wet scrubbing process

Efficient photocatalytic oxidation of gaseous toluene in a bubbling reactor of water.

Mechanistic insights into complete oxidation of chlorobenzene to CO2 via wet scrubber coupled with UV/PDS

Simultaneous removal of multiple indoor-air pollutants using a combined process of electrostatic precipitation and catalytic decomposition