Microwave-Assisted Synthesis of Porous ZnO/SnS₂ Heterojunction and Its Enhanced Photoactivity for Water Purification

Table 3

Designation and summary of synthesis conditions, BET specific area, BJH pore volume, band gaps, and valence band potential of the as-synthesized specimens.

Name	^aZn^2+	^bSn^4+	Na2S	^cMass		BJH
	mmol	mmol	mmol	%	m^2/g	cm^3/g	eV	eV
ZnO	40	0	0	0	62.7	0.823	3.3	2.9
ZOSS-1	40	3.6	7.2	25	39.4	0.571	2.9	2.2
ZOSS-2	40	7.1	14.3	50	109.1	0.767	2.8	2.1
ZOSS-3	40	10.7	21.4	75	69.7	0.229	2.6	2.0
SnS2	0	14.3	28.5	100	19.7	0.665	2.4	2.2

ZnCO₃; ^bSnCl₄·5H₂O; ^cSnCl₄·5H₂O:ZnCO₃.