With IOS 12 it will be possible to scan an NFC tag with a URL and launch in the Safari browser without the need for any applications.  Great news.  Thsi will unfortunately only be available with the latest iPhones - namely the iPhone Xs, Xs Max and XR.

 Here is the technical video of how to implement,  but if you just want to use a URL lanuch in a browser any URL will work.

Apple Tech Video