In this work,(002)oriented aluminum-doped zinc oxide(AZO)powder had been prepared with different bi-functional complexing agents—ethanolamine(MEA),citric acid(CA),or acetylacetone(ACAC)via the sol-gel-combustion method.X-ray powder diffraction(XRD),scanning electron microscope(SEM),UV-Vis spectroscope(UV-Vis)and photoluminescence spectroscope(PL)were applied to characterize the phase structure,morphology,and optical properties of the AZO prepared.Furthermore,these AZO powders were evaluated in the photocata-lytic degradation of methylene blue solution(MB).The results showed that when different complexing agents were used,all powder products had the same pure phase structures of AZO with preferred orientation along the(002)direction;the AZO powder prepared with ACAC as the comple-xing agent demonstrated spherical particles with a particle of 27.8 nm,a bandgap width of 3.129 eV,and it's photoluminescence intensity was superior to the other two powders.It's efficiency of MB degradation solution could reach 98％.
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