You could have put your request in The Civil Nodes Feedback Thread so the author of that package could add it to the wish list 
Reading the folder and match the files with your list of texts might result in the wrong mapping. If there are more files in the folder, the lists won’t match, and you must be absolutely sure that the folder contents is sorted by creation time and not by file name.
Jacob suggested the Image.WriteToFile node and I think that is currently the only way to be sure that the QR Code is the correct one. And you can use your own file name instead of the guid-like name.
