We have located links that may give you full text access.
Promoting catalytic ozonation of phenol over graphene through nitrogenation and Co 3 O 4 compositing.
Journal of Environmental Sciences (China) 2016 December
Catalytic ozonation is progressively becoming an attractive technique for quick water purification but efficient and stable catalysts remains elusive. Here we solvothermally synthesized highly-dispersed Co3 O4 nanocrystals over microscale nitrogen-doping graphene (NG) nanosheets and tested it as a synthetic catalyst in the ozonation of phenol in aqueous solutions. Transmission electron microscopy, powder X-ray diffraction, Fourier transform infrared spectra and X-ray photoelectron spectroscopy were used to determine its morphology, crystallinity, elemental composition and molecular bonds, respectively. The comparative experiments confirmed the highest catalytic activity and oxidation degree (AOSC) of Co3 O4 /NG among four nanocomposites (G, NG, Co3 O4 /G, and Co3 O4 /NG). Co3 O4 /NG also has exhibited the highest degradation rate: complete conversion of a near-saturated concentration of phenol (941.1mg/L) was achieved within 30min under ambient conditions with only a small dosage of Co3 O4 /NG (50mg/L) and ozone (4mg/L, flow rate: 0.5L/min). It also resulted in 34.6% chemical oxygen demand (CODCr ) and 24.2% total organic carbon (TOC) reduction. In this work, graphene nanosheets not only functioned as a support for Co3 O4 nanocrystals but also functioned as a co-catalyst for the enhancement in phenol removal efficiency. The surface nitridation and Co3 O4 modification treatment further improved the removal rate of the phenol pollutants and brought in the higher oxidation degree. Our finding may open new perspectives for pursuing exceptional activity for catalytic ozonation reaction.
Full text links
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app