Planes are flying anyway. Titanium dioxide coating can be fractions of a micron thick and therefore won’t add appreciable weigh. They fly in air that is cold and which has greater amounts of UV than on the ground. The cold conditions may favour desired reactions. They also fly quite fast, so the rate of interaction with gas molecules is high. Whether this makes a difference or not will depend on the reaction kinetics.
You have jumped to conclusions on this. I don’t know if there is something here or not. Hence my questions. Regarding roads and buildings: careful paint design is needed to maximize gas to surface interaction. I am not convinced this would work for roads due to wear and recent classifications of titanium dioxide as a cancer risk when a dust. This is something that anyone thinking of using titanium dioxide for SRM should bear in mind. From: Andrew Lockley [mailto:[email protected]] Sent: 15 April 2019 14:27 To: David Sevier Cc: geoengineering Subject: Re: [geo] titanium dioxide Planes have a tiny surface area, big weight penalty and the air is very thin. Doesn't pass a sniff test. Using it in building and roadway surfaces is much more likely to work Andrew On Mon, 15 Apr 2019, 14:06 David Sevier, <[email protected]> wrote: I am wondering about whether titanium dioxide when electroplated as a film can be used to decompose methane under ultraviolet light conditions. Can anyone advice on this? I am seeking to compare this against polycrystalline titanium dioxide which is known for this. I am also interested to understand if titanium dioxide can be used to decompose nitrogen oxide and in particular nitrous oxide under UV light conditions. Again, also to understand if electroplated films can do this. A possible application would be to coat planes with titanium oxides. There might be some useful decomposition effects as they fly through the high atmosphere under cold bright conditions. Just to head off any misunderstandings, I am not saying in any way that this will fully mitigate the effect of the emissions that flying creates but it might just have a useful small effect to reduce them. Hence the questions. David Sevier Carbon Cycle Limited 248 Sutton Common Road Sutton, Surrey SM3 9PW England Tel 44 (0)208 288 0199 www.carbon-cycle.co.uk <http://www.carbon-cycle.co.uk/> PLEASE NOTE OUR NEW TELEPHONE NUMBER This email is private and confidential Rushlight_commended_Logo_white_2018_19_RGB -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
