Single voltage replacement for 741 opamp
Substituting a single-supply opamp can work just fine if you make some modifications to the circuit. One of the most straightforward ways to adapt from a bipolar supply to a single supply is to reference the original GND to a "virtual GND" that is 1/2 of your supply rail.

This circuit below illustrates the point. The simulation was done in LTspice, available of free charge. Hope that helps.