Effect of reduced graphene oxide on the sunlight-driven photocatalytic activity of rGO/h-MoO3 nanocomposites

In this present work, we explore the preparation of h-molybdenum oxide/reduced graphene oxide (h-MoO3/rGO) nanocomposites via a simple precipitation technique to enhance the photocatalytic activity of h-MoO3 under direct sunlight illumination. The phase formation h-MoO3 was confirmed by x-ray diffraction studies, Fourier transform infrared spectroscopy and Raman spectroscopic studies revealed the formation of rGO/h-MoO3 nanocomposites. The surface morphologies of the synthesized samples were analyzed through field-emission scanning electron microscopy. Moreover, the hazardous methylene blue dye degradation was studied to evaluate the photocatalytic activity of the prepared materials under direct sunlight illumination. The comparative results show that the rGO/h-MoO3 composites exhibited higher catalytic activity than the bare h-MoO3. The reason behind the enhancement of the photocatalytic activity was discussed in great detail. Moreover, in situ scavenger studies were carried out to probe the mechanism of photocatalysis.

[1]  K. Balasubramanian,et al.  Optical and highly enhanced solar light-driven photocatalytic activity of reduced graphene oxide wrapped α-MoO3 nanoplates , 2019 .

[2]  D. Saini,et al.  Sunlight induced photodegradation of toxic azo dye by self-doped iron oxide nano-carbon from waste printer ink , 2019, Solar Energy.

[3]  G. R. Rao,et al.  Multifunctional hierarchical ZnIn2S4±δ microflowers with photocatalytic and pseudocapacitive behavior , 2019, Solar Energy.

[4]  D. Saini,et al.  Removal of toxic chromium (VI) from the wastewater under the sunlight-illumination by functionalized carbon nano-rods , 2019, Solar Energy.

[5]  Haoran Wang,et al.  Holey g-C3N4 nanosheet wrapped Ag3PO4 photocatalyst and its visible-light photocatalytic performance , 2019, Solar Energy.

[6]  R. Sarkar,et al.  In-situ synthesis of rGO-ZnO nanocomposite for demonstration of sunlight driven enhanced photocatalytic and self-cleaning of organic dyes and tea stains of cotton fabrics. , 2018, Journal of hazardous materials.

[7]  Jinlong Yang,et al.  In-situ incorporation of carbon dots into mesoporous nickel boride for regulating photocatalytic activities , 2018, Carbon.

[8]  K. Balasubramanian,et al.  Metal free, sunlight and white light based photocatalysis using carbon quantum dots from Citrus grandis: A green way to remove pollution , 2018, Solar Energy.

[9]  A. Kaur,et al.  Various Methods for Removal of Dyes from Industrial Effluents - A Review , 2018 .

[10]  H. Ouzari,et al.  Investigations into the physical properties of SnO 2 /MoO 3 and SnO 2 /WO 3 bi-layered structures along with photocatalytic and antibacterial applications , 2018 .

[11]  O. Kwon,et al.  Charge transfer and intrinsic electronic properties of rGO-WO3 nanostructures for efficient photoelectrochemical and photocatalytic applications , 2018 .

[12]  N. Zhao,et al.  Fabrication of 3D quasi-hierarchical Z-scheme RGO-Fe2O3-MoS2 nanoheterostructures for highly enhanced visible-light-driven photocatalytic degradation , 2017 .

[13]  E. Wang,et al.  Micelle-Directing Synthesis of Ag-Doped WO3 and MoO3 Composites for Photocatalytic Water Oxidation and Organic-Dye Adsorption. , 2017, Chemistry, an Asian journal.

[14]  L. Balan,et al.  Synthesis of Core/Shell ZnO/rGO Nanoparticles by Calcination of ZIF-8/rGO Composites and Their Photocatalytic Activity , 2017, ACS omega.

[15]  H. Abrahamse,et al.  Sustainable one-step synthesis of hierarchical microspheres of PEGylated MoS2 nanosheets and MoO3 nanorods: Their cytotoxicity towards lung and breast cancer cells , 2017 .

[16]  Junying Zhang,et al.  Reduced graphene oxide three-dimensionally wrapped WO3 hierarchical nanostructures as high-performance solar photocatalytic materials , 2016 .

[17]  S. Adams,et al.  Exfoliated Graphene Oxide/MoO2 Composites as Anode Materials in Lithium-Ion Batteries: An Insight into Intercalation of Li and Conversion Mechanism of MoO2. , 2016, ACS applied materials & interfaces.

[18]  Xiansong Liu,et al.  Rational Design of α-Fe2O3/Reduced Graphene Oxide Composites: Rapid Detection and Effective Removal of Organic Pollutants. , 2016, ACS applied materials & interfaces.

[19]  J. R. Koduru,et al.  Graphene-ZnO nanocomposite for highly efficient photocatalytic degradation of methyl orange dye under solar light irradiation , 2016, Korean Journal of Chemical Engineering.

[20]  Xiaohong Yan,et al.  The synthesis of shape-controlled α-MoO3/graphene nanocomposites for high performance supercapacitors , 2015 .

[21]  Chao Chen,et al.  Synthesis of MoO3/reduced graphene oxide hybrids and mechanism of enhancing H2S sensing performances , 2015 .

[22]  B. Kale,et al.  In-situ preparation of N-TiO2/graphene nanocomposite and its enhanced photocatalytic hydrogen production by H2S splitting under solar light. , 2015, Nanoscale.

[23]  Zhuo. Sun,et al.  Visible light photocatalytic degradation of dyes by bismuth oxide-reduced graphene oxide composites prepared via microwave-assisted method. , 2013, Journal of colloid and interface science.

[24]  Omid Akhavan,et al.  Flash photo stimulation of human neural stem cells on graphene/TiO2 heterojunction for differentiation into neurons. , 2013, Nanoscale.

[25]  G. K. Pradhan,et al.  Fabrication of α-Fe2O3 nanorod/RGO composite: a novel hybrid photocatalyst for phenol degradation. , 2013, ACS applied materials & interfaces.

[26]  N. R. Khalid,et al.  A facile one-step approach to synthesizing ZnO/graphene composites for enhanced degradation of methylene blue under visible light , 2013 .

[27]  A. C. Bose,et al.  Flower-like hierarchical h-MoO3: new findings of efficient visible light driven nano photocatalyst for methylene blue degradation , 2013 .

[28]  Omid Akhavan,et al.  Adverse effects of graphene incorporated in TiO2 photocatalyst on minuscule animals under solar light irradiation , 2012 .

[29]  Sundara Ramaprabhu,et al.  A Raman spectroscopic investigation of graphite oxide derived graphene , 2012 .

[30]  P. Yoo,et al.  Green synthesis of biphasic TiO₂-reduced graphene oxide nanocomposites with highly enhanced photocatalytic activity. , 2012, ACS applied materials & interfaces.

[31]  O. Akhavan,et al.  Protein Degradation and RNA Efflux of Viruses Photocatalyzed by Graphene–Tungsten Oxide Composite Under Visible Light Irradiation , 2012 .

[32]  S. Chun,et al.  Graphitic carbon growth on crystalline and amorphous oxide substrates using molecular beam epitaxy , 2011, Nanoscale research letters.

[33]  Zhuo. Sun,et al.  Enhanced photocatalytic degradation of methylene blue by ZnO-reduced graphene oxide composite synthesized via microwave-assisted reaction , 2011 .

[34]  Edward H. Sargent,et al.  Tandem colloidal quantum dot solar cells employing a graded recombination layer , 2011 .

[35]  Huaqiang Cao,et al.  ZnO@graphene composite with enhanced performance for the removal of dye from water , 2011 .

[36]  G. Zou,et al.  Synthesis and Characterization of Hexagonal and Truncated Hexagonal Shaped MoO3 Nanoplates , 2009 .

[37]  Omid Akhavan,et al.  Photocatalytic Reduction of Graphene Oxide Nanosheets on TiO2 Thin Film for Photoinactivation of Bacteria in Solar Light Irradiation , 2009 .

[38]  H. Bajaj,et al.  Photocatalytic Degradation of Methylene Blue Dye Using Ultraviolet Light Emitting Diodes , 2009 .

[39]  K. Zoh,et al.  Kinetics and mechanism of photolysis and TiO2 photocatalysis of triclosan. , 2009, Journal of hazardous materials.

[40]  Dongsheng Xu,et al.  Single-crystalline TiO2 nanorods: Highly active and easily recycled photocatalysts , 2007 .

[41]  Hyun Woo Lee,et al.  Preparation of Transparent Particulate MoO 3 /TiO 2 and WO 3 /TiO 2 Films and Their Photocatalytic Properties , 2001 .

[42]  A. Ōya,et al.  Carbothermal Reduction of the Molybdenum Oxide/Phenanthroline Complex , 1991 .

[43]  Q. Jia,et al.  Synthesis of RGO/TiO2 hybrid as a high performance photocatalyst , 2017 .

[44]  João E. Benedetti,et al.  A novel nanocomposite based on TiO2/Cu2O/reduced graphene oxide with enhanced solar-light-driven photocatalytic activity , 2015 .