Plasmonic properties of Ag@TiO_2 nanostructures improve the graphitization of polyacrylonitrile and the mechanism

Plasmonic nanostructures can catalyze reactions at near room temperature via surface plasmon resonance (SPR). Herein, we have successfully prepared Ag@TiO2 photocatalysts with the plasmonic properties by applying magnetron sputtering. The results of optical and electrochemical measurements indicated that Ag@TiO2 nanoparticle composite structure can expand the light response area and improve the efficiency of hot electron–hole pair separation. Additional experimental results verify that the SPR effect of silver nanoparticles is an important trigger for the photochemical transformation of Polyacrylonitrile (PAN); and the Ag@TiO2 nanostructures exhibit high catalytic activity for enhancing the catalytic graphitization of PAN in comparison with the bare Ag. The Raman peak ID/IG ratio of Ag@TiO2-catalyzed PAN at 80 °C is 0.87, which is 17% lower than that of pure Ag-catalyzed PAN. The accuracy of the experimental results was also clearly confirmed by simulating the electromagnetic response of Ag@TiO2 photocatalysts using the finite difference time domain (FDTD) method. Ag@TiO2 nanoparticles expand the light response area and improve the efficiency of hot electron–hole pair separation, which exhibit outstanding effect on catalyzing the graphitization of polyacrylonitrile (PAN).

[1]  Yanping Liu,et al.  A novel organic/inorganic S-scheme heterostructure of TCPP/Bi12O17Cl2 for boosting photodegradation of tetracycline hydrochloride: Kinetic, degradation mechanism, and toxic assessment , 2023, Applied Surface Science.

[2]  Haiou Song,et al.  Heterogeneous Fenton-like removal of tri(2-chloroisopropyl) phosphate by ilmenite (FeTiO3): Kinetic, degradation mechanism and toxic assessment. , 2022, Chemosphere.

[3]  Yanping Liu,et al.  Boosted photocatalytic antibiotic degradation performance of Cd0.5Zn0.5S/carbon dots/Bi2WO6 S-scheme heterojunction with carbon dots as the electron bridge , 2022, Separation and Purification Technology.

[4]  M. Shao,et al.  Heterostructuring 2D TiO2 nanosheets in situ grown on Ti3C2T MXene to improve the electrocatalytic nitrogen reduction , 2022, Chinese Journal of Catalysis.

[5]  Xiaobo Chen,et al.  Constructing Cd0.5Zn0.5S/Bi2WO6 S-scheme heterojunction for boosted photocatalytic antibiotic oxidation and Cr(VI) reduction , 2022, Advanced Powder Materials.

[6]  Shijie Li,et al.  Designing oxygen vacancy mediated bismuth molybdate (Bi2MoO6)/N-rich carbon nitride (C3N5) S-scheme heterojunctions for boosted photocatalytic removal of tetracycline antibiotic and Cr(VI): Intermediate toxicity and mechanism insight. , 2022, Journal of colloid and interface science.

[7]  Chenghua Sun,et al.  Continuous g-C3N4 layer-coated porous TiO2 fibers with enhanced photocatalytic activity toward H2 evolution and dye degradation , 2022, RSC advances.

[8]  Yumin Zhang,et al.  Single-atom Cu anchored catalysts for photocatalytic renewable H2 production with a quantum efficiency of 56% , 2022, Nature communications.

[9]  Xiang Ren,et al.  Enhancement of the low-temperature catalytic graphitization of polyacrylonitrile by incorporating Cu nanostructures as plasmonic photocatalyst , 2022, Journal of Materials Science.

[10]  Jinhua Ye,et al.  Unravelling unsaturated edge S in amorphous NiSx for boosting photocatalytic H2 evolution of metastable phase CdS confined inside hydrophilic beads , 2021, Applied Catalysis B: Environmental.

[11]  Wei Zhou,et al.  Hollow Semiconductor Photocatalysts for Solar Energy Conversion , 2021, Advanced Powder Materials.

[12]  Huayang Liu,et al.  Preparation of Ag SPR-promoted TiO2-{001}/HTiOF3 photocatalyst with oxygen vacancies for highly efficient degradation of tetracycline hydrochloride , 2021 .

[13]  Yue Zhao,et al.  Atomically Unraveling the Dependence of Surface Microstructure on Plasmon-induced Hydrogen Evolution on Au/SrTiO3 , 2021, Nano Energy.

[14]  M. Al‐Hashimi,et al.  Solution-processable porous graphitic carbon from bottom-up synthesis and low-temperature graphitization , 2021, Chemical science.

[15]  Xiaofei Zhao,et al.  Manipulating the surface-enhanced Raman spectroscopy (SERS) activity and plasmon-driven catalytic efficiency by the control of Ag NP/graphene layers under optical excitation , 2021 .

[16]  Jinlong Yang,et al.  Formation of Plasmonic Polarons in Highly Electron-Doped Anatase TiO2. , 2020, Nano letters.

[17]  Ying Dai,et al.  Plasmon-induced dehydrogenation of formic acid on Pd-dotted Ag@Au hexagonal nanoplates and single-particle study , 2020 .

[18]  Q. Ouyang,et al.  In-situ doping B4C nanoparticles in PAN precursors for preparing high modulus PAN-based carbon fibers with boron catalytic graphitization , 2020 .

[19]  Saptarshi Das,et al.  Graphene memristive synapses for high precision neuromorphic computing , 2020, Nature Communications.

[20]  Zhang Liang,et al.  Au nanorods decorated TiO2 nanobelts with enhanced full solar spectrum photocatalytic antibacterial activity and the sterilization file cabinet application , 2020 .

[21]  Gang Lu,et al.  Plasmon-generated hot holes for chemical reactions , 2020, Nano Research.

[22]  M. Nazeeruddin,et al.  Enhanced Interfacial Binding and Electron Extraction Using Boron‐Doped TiO2 for Highly Efficient Hysteresis‐Free Perovskite Solar Cells , 2019, Advanced science.

[23]  P. Maggard,et al.  Harnessing Plasmon-Induced Hot Carriers at the Interfaces With Ferroelectrics , 2019, Front. Chem..

[24]  Gareth R. Williams,et al.  Solar- versus Thermal-Driven Catalysis for Energy Conversion , 2019, Joule.

[25]  Shaobin Huang,et al.  Design of plasmonic CuCo bimetal as a nonsemiconductor photocatalyst for synchronized hydrogen evolution and storage , 2019, Applied Catalysis B: Environmental.

[26]  Su‐Un Lee,et al.  Metal-semiconductor yolk-shell heteronanostructures for plasmon-enhanced photocatalytic hydrogen evolution , 2018 .

[27]  Lili Lin,et al.  Hybrid Au-Ag Nanostructures for Enhanced Plasmon-Driven Catalytic Selective Hydrogenation through Visible Light Irradiation and Surface-Enhanced Raman Scattering. , 2018, Journal of the American Chemical Society.

[28]  M. Moskovits,et al.  Hot Charge Carrier Transmission from Plasmonic Nanostructures. , 2017, Annual review of physical chemistry.

[29]  D. Jing,et al.  Photodecomposition of NOx on Ag/TiO2 composite catalysts in a gas phase reactor , 2017 .

[30]  Jianfang Wang,et al.  Gold Nanocups: Colloidal Gold Nanocups with Orientation-Dependent Plasmonic Properties (Adv. Mater. 30/2016). , 2016, Advances in Materials.

[31]  Jianfang Wang,et al.  Colloidal Gold Nanocups with Orientation‐Dependent Plasmonic Properties , 2016, Advanced materials.

[32]  Z. Tian,et al.  Catalysis with Two‐dimensional Materials and Their Heterostructures , 2016 .

[33]  Jung‐Kun Lee,et al.  Effect of Synthesis Techniques on Crystallization and Optical Properties of Ag-Cu Bimetallic Nanoparticles , 2016 .

[34]  G. Lu,et al.  Synergistic catalytic effect of light rare earth element and other additives on the degree of graphitization and properties of graphite , 2016, Journal of Materials Science.

[35]  G. Kiriakidis,et al.  Solar light and metal-doped TiO2 to eliminate water-transmitted bacterial pathogens: Photocatalyst characterization and disinfection performance , 2014 .

[36]  G. Shao,et al.  Synthesis and Ag-loading-density-dependent photocatalytic activity of Ag@TiO2 hybrid nanocrystals , 2013 .

[37]  Hongxing Xu,et al.  Electric field gradient quadrupole Raman modes observed in plasmon-driven catalytic reactions revealed by HV-TERS. , 2013, Nanoscale.

[38]  G. Yi,et al.  Metal-lined semiconductor nanotubes for surface plasmon-mediated luminescence enhancement. , 2013, Nano letters.

[39]  Wei Chen,et al.  Plasmonic Ag/AgBr nanohybrid: synergistic effect of SPR with photographic sensitivity for enhanced photocatalytic activity and stability. , 2012, Dalton transactions.

[40]  Shuxin Ouyang,et al.  Nano‐photocatalytic Materials: Possibilities and Challenges , 2012, Advanced materials.

[41]  E. Goldys,et al.  Ultrabright Eu–Doped Plasmonic Ag@SiO2 Nanostructures: Time‐gated Bioprobes with Single Particle Sensitivity and Negligible Background , 2011, Advanced materials.

[42]  W. Zhou,et al.  Facile solvothermal synthesis of hierarchical flower-like Bi2MoO6 hollow spheres as high performance visible-light driven photocatalysts , 2011 .

[43]  A. Seitsonen,et al.  Atomically precise bottom-up fabrication of graphene nanoribbons , 2010, Nature.

[44]  J. Hrbek,et al.  Inverse oxide/metal catalysts: A versatile approach for activity tests and mechanistic studies , 2010 .

[45]  C. Grimes,et al.  Synergistic catalytic effect of Ti–B on the graphitization of polyacrylonitrile-based carbon fibers , 2008 .

[46]  Shoujun Yi,et al.  Catalytic graphitization of furan resin carbon by yttrium , 2008 .

[47]  G. Knör.  Photocatalytic reactions of porphyrin-based multielectron transfer sensitizers , 1998 .

[48]  David F. Ollis,et al.  Heterogeneous photocatalytic oxidation of gas-phase organics for air purification: Acetone, 1-butanol, butyraldehyde, formaldehyde, and m-xylene oxidation , 1992 .