Interfacial Grown Zinc Oxide Origami Structure for Broadband Visible Light Driven Photocatalysts

A novel route to synthesize large area ZnO/Zn(OH)2 origami thin films at air/liquid interface is reported. ZnO materials derived from this route show the largest blue‐shifted band‐to‐band emission at 3.85 eV (3.37 eV in bulk ZnO) so far, resulting from the quantum confinement in the ultrathin ZnO/Zn(OH)2 nanosheets. Interband defect levels (IDLs) related broadband photoluminescence is observed from UV to red region by excitation wavelength dependent photoluminescence measurements. The ZnO origami structures show photocatalytic methylene blue degradation (MB‐degradation) activity even under sub‐bandgap visible light illumination from 405 nm to green region at 505 nm, measured by low power monochromatic light emitting diode light sources. From the consistent light absorption, luminescence, and MB‐degradation activity, it can be concluded that the broadband visible light MB‐degradation activity is attributed to photogenerated carriers via IDLs. The 2D ZnO‐nanosheets in the origami structure better solve the dilemma of the IDLs in bulk materials, i.e., they are beneficial for light absorption in visible range but detrimental for enhanced recombination loss of carriers, and they can be quickly extracted to the surface without substantial recombination. This finding makes the ZnO origami a promising candidate for efficient photocatalyst that harvesting the sunlight and for indoor applications.

[1]  Zhaokui Jin,et al.  Photocatalysis-mediated drug-free sustainable cancer therapy using nanocatalyst , 2021, Nature Communications.

[2]  B. Albiss,et al.  Photocatalytic Degradation of Methylene Blue Using Zinc Oxide Nanorods Grown on Activated Carbon Fibers , 2021 .

[3]  Yuan-ming Huang,et al.  Rendering Visible-Light Photocatalytic Activity to Undoped ZnO via Intrinsic Defects Engineering , 2020, Catalysts.

[4]  B. Dietzek,et al.  Self‐Assembled Graphene/MWCNT Bilayers as Platinum‐Free Counter Electrode in Dye‐Sensitized Solar Cells† , 2019, Chemphyschem : a European journal of chemical physics and physical chemistry.

[5]  K. Asokan,et al.  Role of low energy transition metal ions in interface formation in ZnO thin films and their effect on magnetic properties for spintronic applications , 2019, Applied Surface Science.

[6]  Xinjian Feng,et al.  Green Approach for Metal Oxide Deposition at an Air–Liquid–Solid Triphase Interface with Enhanced Photocatalytic Activity , 2019, ACS omega.

[7]  W. Macyk,et al.  How To Correctly Determine the Band Gap Energy of Modified Semiconductor Photocatalysts Based on UV-Vis Spectra. , 2018, The journal of physical chemistry letters.

[8]  Jan Kegel,et al.  Zinc oxide for solar water splitting: A brief review of the material's challenges and associated opportunities , 2018, Nano Energy.

[9]  A. Habibi-Yangjeh,et al.  Review on the criteria anticipated for the fabrication of highly efficient ZnO-based visible-light-driven photocatalysts , 2018, Journal of Industrial and Engineering Chemistry.

[10]  I. Yahia,et al.  Oxygen-defected ZnO: Facial Synthesis and high photocatalytic performance under visible light , 2018 .

[11]  Chi-Chang Hu,et al.  Effects of Anions and pH on the Stability of ZnO Nanorods for Photoelectrochemical Water Splitting , 2018, ACS omega.

[12]  Abdul Wahab Mohammad,et al.  A review of ZnO nanoparticles as solar photocatalysts: Synthesis, mechanisms and applications , 2018 .

[13]  Z. Yaakob,et al.  Modified TiO2 photocatalyst for CO2 photocatalytic reduction: An overview , 2017 .

[14]  B. Dietzek,et al.  Effect of annealing on the sub-bandgap, defects and trapping states of ZnO nanostructures , 2017 .

[15]  Liqun Ye,et al.  Photocatalytic Reduction of CO2 by ZnO Micro/nanomaterials with Different Morphologies and Ratios of {0001} Facets , 2016, Scientific Reports.

[16]  A. Ignaszak,et al.  ZnO Nanostructures for Dye-Sensitized Solar Cells Using the TEMPO+ /TEMPO Redox Mediator and Ruthenium(II) Photosensitizers with 1,2,3-Triazole-Derived Ligands. , 2016, ChemPlusChem.

[17]  Mohammad Mansoob Khan,et al.  Conducting PANI stimulated ZnO system for visible light photocatalytic degradation of coloured dyes , 2016 .

[18]  A. Moshfegh,et al.  Recent progress on doped ZnO nanostructures for visible-light photocatalysis , 2016 .

[19]  R. Ahuja,et al.  Adsorption mechanism of graphene-like ZnO monolayer towards CO2 molecules: enhanced CO2 capture , 2016, Nanotechnology.

[20]  A. Top,et al.  Zinc oxide and zinc hydroxide formation via aqueous precipitation: Effect of the preparation route and lysozyme addition , 2015 .

[21]  Walden C. Rhines,et al.  A modern perspective on the history of semiconductor nitride blue light sources , 2015 .

[22]  F. V. Molefe,et al.  Phase formation of hexagonal wurtzite ZnO through decomposition of Zn(OH)2 at various growth temperatures using CBD method , 2015 .

[23]  Mietek Jaroniec,et al.  Polymeric Photocatalysts Based on Graphitic Carbon Nitride , 2015, Advanced materials.

[24]  F. Bernard,et al.  Hydrothermal Synthesis of ZnO Crystals from Zn(OH)2 Metastable Phases at Room to Supercritical Conditions , 2014 .

[25]  R. Asahi,et al.  Nitrogen-doped titanium dioxide as visible-light-sensitive photocatalyst: designs, developments, and prospects. , 2014, Chemical reviews.

[26]  A. Bumajdad,et al.  Understanding the superior photocatalytic activity of noble metals modified titania under UV and visible light irradiation. , 2014, Physical chemistry chemical physics : PCCP.

[27]  Nagendra Pratap Singh,et al.  Defect Driven Emission from ZnO Nano Rods Synthesized by Fast Microwave Irradiation Method for Optoelectronic Applications , 2014 .

[28]  R. Saravanan,et al.  Visible light induced degradation of methylene blue using CeO2/V2O5 and CeO2/CuO catalysts. , 2013, Materials science & engineering. C, Materials for biological applications.

[29]  M. Stefan,et al.  Magnetic defects in crystalline Zn(OH)2 and nanocrystalline ZnO resulting from its thermal decomposition , 2013 .

[30]  R. Mohamed,et al.  Enhancement of photocatalytic activity of ZnO–SiO2 by nano-sized Ag for visible photocatalytic reduction of Hg(II) , 2012 .

[31]  Xiuyan Li,et al.  ZnO–graphene composite for photocatalytic degradation of methylene blue dye , 2012 .

[32]  A. Corma,et al.  Photocatalytic CO2 Reduction by TiO2 and Related Titanium Containing Solids , 2012 .

[33]  M. Hussein,et al.  Visible Light-Induced Degradation of Methylene Blue in the Presence of Photocatalytic ZnS and CdS Nanoparticles , 2012, International journal of molecular sciences.

[34]  M. Seery,et al.  A review on the visible light active titanium dioxide photocatalysts for environmental applications , 2012 .

[35]  A. Nguyen,et al.  Control Preparation of Zinc Hydroxide Nitrate Nanocrystals and Examination of the Chemical and Structural Stability , 2012 .

[36]  Martin Steglich,et al.  Core–shell heterojunction solar cells on silicon nanowire arrays , 2012 .

[37]  G. Pacchioni,et al.  Transition levels of defect centers in ZnO by hybrid functionals and localized basis set approach. , 2010, The Journal of chemical physics.

[38]  Sheng-Po Chang,et al.  A ZnO nanowire-based humidity sensor , 2010 .

[39]  Michael K. Seery,et al.  Highly Visible Light Active TiO2-xNx Heterojunction Photocatalysts , 2010 .

[40]  S. Ida,et al.  Syntheses of Zinc Oxide and Zinc Hydroxide Single Nanosheets , 2010 .

[41]  S. K. Gupta,et al.  Development of gas sensors using ZnO nanostructures , 2010 .

[42]  Anderson Janotti,et al.  Fundamentals of zinc oxide as a semiconductor , 2009 .

[43]  G. Yin,et al.  Evaluation of ZnO nanorod arrays with dandelion-like morphology as negative electrodes for lithium-ion batteries , 2009 .

[44]  Dong Chan Kim,et al.  A comparative analysis of deep level emission in ZnO layers deposited by various methods , 2009 .

[45]  Yuchao Yang,et al.  Ferromagnetism and possible application in spintronics of transition-metal-doped ZnO films , 2008 .

[46]  J. Hsu,et al.  ZnO nanostructures as efficient antireflection layers in solar cells. , 2008, Nano letters.

[47]  Zhong Lin Wang,et al.  Microfibre–nanowire hybrid structure for energy scavenging , 2008, Nature.

[48]  Chun-Hsing Wu,et al.  Kinetics of Photocatalytic Decomposition of Methylene Blue , 2006 .

[49]  C. Hariharan,et al.  Photocatalytic degradation of organic contaminants in water by ZnO nanoparticles: Revisited , 2006 .

[50]  Zhong Lin Wang,et al.  Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays , 2006, Science.

[51]  Debabrata Chatterjee,et al.  Visible light induced photocatalytic degradation of organic pollutants , 2005 .

[52]  Hsin-Ming Cheng,et al.  Band gap variation of size-controlled ZnO quantum dots synthesized by sol-gel method , 2005 .

[53]  R. Asahi,et al.  Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides , 2001, Science.

[54]  Yiying Wu,et al.  Room-Temperature Ultraviolet Nanowire Nanolasers , 2001, Science.

[55]  A. Fujishima,et al.  Electrochemical Photolysis of Water at a Semiconductor Electrode , 1972, Nature.