Mark Stroman, 41, was executed with a lethal injection and pronounced dead at 2053 CDT (0153 GMT).
In his final weeks Stroman’s plea for clemency was backed by Rais Bhuiyan, who was shot by him but survived.
Mr Bhuiyan had said that killing Stroman was “not the solution”.
Speaking to the BBC, Mr Bhuiyan, 37, said Stroman was guilty of “hate crime”, but warned that his death would not achieve anything.
“His execution will not eradicate hate crimes from this world. We will just simply lose another human life,” Mr Bhuiyan said.
“I had some poor upbringing and I grabbed a hold of some ideas which was ignorance, you know, and hate is pure ignorance. I no longer want to be like hate, I want to be like me,” Stroman said.