1D–2D hybrids as efficient optoelectronic materials: a study on graphitic carbon nitride nanosheets wrapped with zinc oxide rods

Abstract

Zinc oxide (ZnO) nanorods (NRs) wrapped with graphitic carbon nitride (GCN) nanosheet (NS) hybrids have been synthesized by a simple chemical process. The as-prepared samples are characterized by X-ray diffraction, field emission scanning electron microscopy, high resolution transmission electron microscopy, Fourier transformed infrared spectroscopy, UV-Vis spectroscopy and photoluminescence spectroscopy. The images obtained from the transmission electron microscopic study and the existence of C-N stretching modes as observed from Fourier transform infrared spectroscopy confirm the successful attachment of GCN NSs onto the ZnO NRs. It is seen that hybrid samples show broad photoluminescence (PL) emission with enhanced defect related emission along with a quenching effect due to the charge transfer mechanism. The results have been explained by taking into consideration the three different types of electron transitions occurring within the type-II band structure of the hybrid samples. Moreover a study on the conductivity of the samples is carried out under dark conditions and also under ultraviolet (UV) light irradiation. It is observed that the hybrid samples show significantly improved conductivity under both dark and UV irradiated conditions. The absorbance of the samples in the UV range shows better conductivity under UV conditions as compared to dark conditions.

Electrochemical Immunosensor for Detection of H. pylori Secretory Protein VacA on g-C3N4/ZnO Nanocomposite-Modified Au Electrode

“…87–1526), whereas wurtzite hexagonal structures (JCPDS no 36–1451) confirms the crystalline nature of prepared nanocomposite. 36 , 46 …”

“…Figure shows the XRD peaks of g-C 3 N 4 /ZnO observed at 2θ values of 12.3, 27.5, 31.75, 34.42, 35.95, 47.42, 56.54, 62.81, 66.86, 67.81, and 69.06° corresponding to (100), (002), (100), (002), (101), (102), (110), (103), (200), (112), and (201), confirming the crystalline structure of g-C 3 N 4 /ZnO that well-matched and identified with heptazine units (JCPDS no. 87–1526), whereas wurtzite hexagonal structures (JCPDS no 36–1451) confirms the crystalline nature of prepared nanocomposite. , …”

“…It shows that bulk g-C 3 N 4 is densely packed with ZnO nanorods. During calcination, the formation of ZnO nanorods with different lengths and widths along with nearly regular and elongated hexagonal structures were thoroughly occupied onto the surface of layered g-C 3 N 4 …”

Harnessing the Potential of Graphitic Carbon Nitride for Optoelectronic Applications

“…Another study showed similar results, revealing that compared to individual g‐CN and ZnO, the hybrid featured higher conductivity due to charge transfer and exhibited enhanced violet‐blue emission after optical excitation. [ 118 ] Charge transfer was also responsible for the increase in the dark current and photocurrent observed for g‐CN/ZnO hybrids.…”

A 0D/2D Heterojunction Composite of Polymeric Carbon Nitride and ZIF-8-Derived ZnO for Photocatalytic Organic Pollutant Degradation

“…Such a nanocomposite can solve the individual drawbacks of ZnO and C 3 N 4 and acts as a potential photocatalyst for the effective degradation of rhodamine B (RhB). Based on the dimensionality of the nanostructures of ZnO and C 3 N 4 , various research groups presented their results in the literature on 0D/2D [32][33][34][35][36], 1D/0D [37], 1D/2D [38][39][40][41][42][43], 2D/0D [44], 2D/2D [45], and 3D/2D [31] heterojunction composites (where 0D, 1D, 2D, and 3D are zero-, one-, two-, and three-dimensional composites) involving ZnO and C 3 N 4 , respectively. Sharma et al designed a ZnO/g-C 3 N 4 photocatalyst for the removal of methylene blue (MB).…”