Im looking for a way to get the html of a node with template to render using ajax based query for example, when at home clicking a link /about/ will return an ajax of the html of about page

@inherits Umbraco.Web.Mvc.UmbracoTemplatePage
@{
    Layout = null;
}
<div class="about">
 /*about content from node about*/
</div>

so the ajax data will later give us

<div class="about">
 Lorem ipsum dolor si amet
</div>

then i will render it to the placeholder front end of the website

I know we can get the node id using

 UmbracoContext.Current.ContentCache.GetByRoute(string url)

or

uQuery.GetNodeByUrl