Fabrication and improved photocatalytic performance of 2D/0D structured g-C3N4/WO3 composite materials

In this work, [Formula: see text] quantum dots grow in situ on the synthesized ultra-thin [Formula: see text] nanosheets, ultimately forming a type of tightly bound 2D/0D Z-type heterojunctions. It was found that [Formula: see text] quantum dots were closely combined with [Formula: see text] nanosheets through SEM and TEM measurements. XRD, IR, and XPS characterization proved a [Formula: see text] heterojunction material was formed. The construction of [Formula: see text] heterojunctions enhanced visible light absorption, improved carrier separation efficiency, and reduced charge transfer resistance. Photocatalytic hydrogen production tests showed that the hydrogen production rate of 20% [Formula: see text] composite materials was 2.8 times that of the original [Formula: see text], and the hydrogen production amount within 3h was 3.7 times that of the original [Formula: see text]. Photocatalytic degradation of Rhodamine B and 4-chlorophenol under visible light irradiation showed that compared with [Formula: see text], the photocatalytic degradation efficiency of 20% [Formula: see text] composite materials was enhanced. The results reveal that the special structured [Formula: see text] composite materials have excellent photocatalytic activity, which can not only efficiently produce hydrogen but also efficiently degrade organic pollutants, providing an important reference for solving energy crises and environmental problems.