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Assessment of Bamboo Charcoal/Nano-TiO2 (BC/TiO2) Composite Material and Its Application in Photocatalytic Coating
摘要： The bamboo charcoal/nano-TiO2 (BC/TiO2) composite material is designed and prepared for further improving photocatalytic property of TiO2. Assessment of BC/TiO2 composite material and its application in photocatalytic coating are investigated by nitrogen absorption test, scanning electron microscopy-energy disperse spectroscopy (SEM-EDS) characterization and photocatalytic and mechanical properties analysis. The results show that optimal ratio of TiO2 to BC is 0.03. Rhodamine B (RhB) degradation ratio can reach 62.9% under 4 h UV light irradiation, which is 43.7% higher than pure TiO2 sample. The specific surface area (SBET) and the total average pore size (D) of BC/TiO2 can reach 388.33 m2/g and 3.71 nm, respectively. Moreover, the photocatalytic coatings prepared mainly by BC/TiO2 and polyacrylic emulsion (PAE), not only show satisfactory mechanical properties, but also have excellent photocatalytic property. When the addition of BC/TiO2 composite materials is 6%, the photocatalytic property of coating is optimal, RhB degradation ratio can reach 83.7% under 8 h UV light irradiation. Also the adhesion, pencil hardness and impact resistance reach 2 level, 2H and 44 kg cm, respectively.
关键词： Bamboo charcoal,Nano-TiO2,Photocatalytic,Coating
更新于2025-09-23 15:23:52
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Improved organic pollutants removal and simultaneous electricity production via integrating Fenton process and dual rotating disk photocatalytic fuel cell system using bamboo charcoal cathode
摘要： A coupling system combining Fenton process with dual rotating disk photocatalytic fuel cell (PFC) was developed to improve methyl orange (MO) removal and simultaneous electricity production, in which the (NH4)3PO4 modified bamboo charcoal (BC) was acted as cathode catalyst. Due to the existence of the N and P containing functional groups on the BC catalyst and the rotating electrode, the hybrid system could efficiently reduce oxygen to generate some hydroxyl radical and related species for MO removal. Therefore, Fenton-PFC-BC with rotation system showed a superior MO removal efficiency of 85%, 2.4 times higher than that in the traditional Fenton-PFC-Pt with aeration system. The radicals inhibition assays and hydrogen peroxide quantitative studies revealed that HO%, h+ and %O2- were primarily responsible for MO degradation. Furthermore, the MO removal performance for Fenton-PFC-BC with rotation system was investigated at different parameters (such as rotating speed, BC loading, pH and ferrous ion concentration) to obtain optimal operation conditions. Results of energy analysis and reusability experiment showed that the proposed Fenton-PFC-BC with rotation system provided a cost-effective and stable method for the organic degradation and energy recovery.
关键词： Bamboo charcoal,Fenton,Dual rotating disk photocatalytic fuel cell
更新于2025-09-23 15:23:52
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Photocatalytic Degradation of Aniline Using Supported TiO2/Charcoal Composite
摘要： TiO2/bamboo charcoal composites were prepared by sol-gel technique with tetrabutyl titanate as the titanium source and 60-mesh bamboo charcoal as the support. The photocatalytic degradation processes of aniline were studied. The results indicated that the TiO2/bamboo charcoal composites had quite a good photocatalytic ability. In the UV irradiation, the temperature and pH value had great influence on the effect of degradation. When the pH value was between 1 to 3 and the temperature was 50 oC, the degradation effects reached more than 93 %. The degradation rate of aniline decreased when the concentration increased but increased with more TiO2 in it. The degradation achieved balance after 105 min. The photocatalytic degradation of aniline to TiO2 fitted in with the first reaction kinetic equation.
关键词： Aniline,Titania,Bamboo charcoal,Photocatalytic degradation
更新于2025-09-04 15:30:14