Nope.
Plants recycle Oxygen, separating it from Carbon Dioxide by utilizing solar energy during photosynthesis.
Oxygen is created in stellar furnaces through thermonuclear fusion. It gets distributed through the galaxy when stars called supernovae explode.
Even if oxygen were to combine chemically with hydrogen or carbon in the sun, it would rapidly disassociate once again because of the extreme heat. The gases in the sun are a plasma, such as may be seen in a welder's electric arc just before you go blind.
LOL -- And you know this how?
Look guys. I told you I'm not going to argue with you. Junk-Science and I don't get along. I like actual physical proof. You may like your proof to be on the rather vague and cloudy side but me... Well I like it to be rock solid and indisputable. It is obvious that you all enjoy vain babblings and wonderland. I do not. I simply asked a question that has yet to be answered and you all have attacked me for asking it.
Grow up!