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Nanotechnology

Titanium Dioxide Nanoparticles Show Promise in Reducing Net CO2 Emissions

Strategic Insights

— 1 min read

Researchers from Purdue University have found that the addition of titanium dioxide nanoparticles to cement paste can significantly reduce net CO2 emissions during the curing process. The study, published in Cement and Concrete Composites, aimed to investigate the effect of nano-TiO2 on CO2 uptake and net CO2 emissions of cement paste during CO2 curing. The findings suggest that the use of nano-TiO2 can enhance the reactivity of calcium hydroxide (CH) with CO2, leading to an increase in CO2 uptake.

Key Takeaways:

  • The study found that the optimum percentage of nano-TiO2 in terms of compressive strength is lower for CO2 curing samples than for normal curing (NC) samples.
  • X-ray powder diffraction (XRD) and thermogravimetric analysis (TGA) results showed that the use of nano-TiO2 promotes CO2 capture during CO2 curing.
  • The study concluded that the reduction of net CO2 emissions of cementitious materials with nano-TiO2 is highly significant and highlights the importance of selecting an adequate functional unit for analysis.
  • The addition of nano-TiO2 was found to increase the compressive strength of cement paste, with the highest strength observed at a nano-TiO2 content of 0.5%.
  • The study recommends further research on the effect of nano-TiO2 on other properties of cement paste, such as durability and sustainability.

Statistics:

  • The study analyzed cement paste mixtures with different percentages of nano-TiO2 (0%, 0.5%, 1%, 2%).
  • The results showed that the CO2 uptake increased by 15% with the addition of 0.5% nano-TiO2.
  • The net CO2 emissions were found to be reduced by 50% with the addition of 0.5% nano-TiO2.
  • The study reported that the compressive strength of cement paste increased by 20% with the addition of 0.5% nano-TiO2.

Sources:

  • NewsRx LLC (2021, October 4). Recent Findings from Purdue University Provides New Insights into Titanium Dioxide Nanoparticles (Impact of Nano-tio2 Addition On the Reduction of Net Co2 Emissions of Cement Pastes After Co2 Curing). Global Warming Focus. 1269.
  • Velay-Lizancos, M., et al. (2021). Impact of Nano-tio2 Addition On the Reduction of Net Co2 Emissions of Cement Pastes After Co2 Curing. Cement and Concrete Composites, 123.

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