Is this idea acceptable ?

Scenario : My organisation has a portal website that has low page ranking and low search keyword visible on Google. So, I want to propose a research study to increase the SEO of the website. Then, research article will be produced and published in local journal. Is this idea (research to increase SEO) suitable/acceptable? Can anybody give me idea/opinion of other research ideas based on this scenario?

For what level?MSc or PhD?

You need to read all literature around SEO and look at what areas have not yet been explored, and explore them as part of your research.