I am outputting a table from a list in my controller using apex:repeat.

In one of my columns, I want to have a link that will open the record for detail view

I want a link like this https://www.salesforce.com/apex/SystemChangeRequest?id=a3K8E0000000B7S.

as my detail page is called SystemChangeRequest and the id of the record is a3K8E0000000B7S

so I have tried this:

<td>                
    <apex:outputLink value="/apex/SystemChangeRequest/?id=!{Requests.id}">!{Requests.id}</apex:outputLink>                  
</td>

But the link being rendered in the browser is:

https://cs87.salesforce.com/apex/SystemChangeRequest/?id=!%7BRequests.id%7D

so it is giving an 'invalid URL' error.

So what am I missing or doing wrong?