[1] Fan M,Andrade G,Brolo A. A review on recent advances in the applications of surface-enhanced Raman scattering in analytical chemistry［J］.Analytica Chimica Acta 2020, 1097:1-29.

[2] Lombardi J,Birke R.Theory of Surface-Enhanced Raman Scattering in Semiconductors［J］.The Journal of Physical Chemistry C 2014, 118(20): 11120-11130.

[3] Langer J, Jimenez A, Aizpurua J, et al. Present and Future of Surface-Enhanced Raman Scattering［J］.ACS Nano 2019, 14(1): 28-117.

[4] Besozzi E, Dellasega D, Russo V, et al. Thermomechanical properties of amorphous metallic tungsten-oxygen and tungsten-oxide coatings［J］.Materials & Design 2019, 165: 107565.

[5] Xu X L, Yazdi M A, Salut R, et al. Structure, composition and electronic transport properties of tungsten oxide thin film sputter-deposited by the reactive gas pulsing process［J］.Materials Chemistry and Physics 2018, 205: 391-400.

[6] Xu X L, Arab P Y, Sanchez J, et al. Reactive co-sputtering of tungsten oxide thin films by glancing angle deposition for gas sensors［J］.Materials Today: Proceedings 2019, 6: 314-318.

[7] Liu Q Q, Hu C F, Wang X M. Hydrothermal synthesis of oxygen-deficiency tungsten oxide quantum dots with excellent photochromic reversibility［J］.Applied Surface Science 2019, 480: 404-409.

[8] Djaoued Y, Balaji S, Beaudoin N. Sol-gel synthesis of mesoporous WO3-TiO2composite thin films for photochromic devices［J］. Journal of Sol Gel Science & Technology 2013, 65(3): 374-383.

[9] Wang H P, Zhang L, Zhou Y Y, et al. Photocatalytic CO2 reduction over platinum modified hexagonal tungsten oxide: Effects of platinum on forward and back reactions［J］. Applied Catalysis B: Environmental 2020, 263: 118331.

[10] Huang J R, Xu X J, Gu C P, et al. Flower-like and hollow sphere-like WO3 porous nanostructures: Selective synthesis and their photocatalysis property［J］. Materials Research Bulletin 2012.

[11] Zhang G J. WO3 nanorods/graphene nanocomposites for high-efficiency visible-light-driven photocatalysis and NO2 gas sensing［J］. Journal of Materials Chemistry 2012, 22.

[12] Zhang Q X, Xie L L, Zhu Y, et al. Photo-thermochromic properties of oxygen-containing yttrium hydride and tungsten oxide composite films［J］.Solar Energy Materials and Solar Cells 2019, 200: 109930.

[13] Popov A, Zholobak N, Balko O, et al. Photo-induced toxicity of tungsten oxide photochromic nanoparticles［J］.J Photochem Photobiol B 2018, 178: 395-403.

[14] Szymanska D, Rutkowska I, Adamczyk L, et al. Effective charge propagation and storage in hybrid films of tungsten oxide and poly(3,4-ethylenedioxythiophene)［J］.Journal of Solid State Electrochemistry 2010, 14(11): 2049-2056.

[15] Huang L Z, Luo X Y, Jiang Y K, et al. Oxygen deficiency assisted synthesis of network-like tungsten carbide-carbon nanotubes composites for methanol oxidation［J］.Ceramics International 2019, 45(14): 16976-16981.

[16] Gu X K,Samira S;Nikolla E. Oxygen Sponges for Electrocatalysis: Oxygen Reduction/Evolution on Nonstoichiometric, Mixed Metal Oxides［J］.Chemistry of Materials 2018, 30(9): 2860-2872.

[17] Jiang L, You T T, Yin P G, et al. Surface-enhanced Raman scattering spectra of adsorbates on Cu2O nanospheres: charge-transfer and electromagnetic enhancement［J］. Nanoscale, 2013, 5(7):2784.

[18] Cialla D, Petschulat J. Investigation on the Second Part of the Electromagnetic SERS Enhancement and Resulting Fabrication Strategies of Anisotropic Plasmonic Arrays［J］.Chemphyschem, 2010, 11(9): 1-3.

[19] Jin L, She G, Wang X, et al. Enhancing the SERS performance of semiconductor nanostructures through a facile surface engineering strategy［J］. Applied Surface Science, 2014, 320:591-595.

[20] Chelibanov V P, Polubotko A M. Main regularities of SERS on semiconductors and dielectrics［J］. Chemical Physics Letters, 2018, 697:23-28.

[21] Huang J, Ma D Y, Chen F, et al. Green in Situ Synthesis of Clean 3D Chestnutlike Ag/WO3-x Nanostructures for Highly Efficient, Recyclable and Sensitive SERS Sensing［J］. ACS Applied Materials & Interfaces 2017, 9(8):7436-7446.

[22] Zhou Y, Hu X C, Liu X H, et al. Core-shell hierarchical WO2/WO3 microspheres as an electrocatalyst support for methanol electrooxidation［J］. Chemical Communications, 2015, 51.

[23] Bao K Y, Mao W T, Liu G Y, et al. Preparation and electrochemical characterization of ultrathin WO3-x /C nanosheets as anode materials in lithium ion batteries［J］. Nano Research 2016, 10(6): 1903-1911.

[24] Tong M, Yang J, Jin Q, et al. Facile preparation of amorphous carbon-coated tungsten trioxide containing oxygen vacancies as photocatalysts for dye degradation［J］. Journal of Materials Science, 2019.

[25] Zhang B, Yin X H, Zhen D S, et al. Au nanoparticle-modified WO3 nanoflowers/TiO2 nanotubes used for the SERS detection of dyes［J］. New Journal of Chemistry 2017, 41(22):13968-13973.

[26] Witham H. Effect of preparation conditions on the morphology and electrochromic properties of amorphous tungsten oxide films［J］.Journal of Vacuum Science & Technology A Vacuum Surfaces & Films 2003, 11(4):1881.

[27] Yao Z J, Di J T, Yong Z Z, et al. Aligned coaxial tungsten oxide-carbon nanotube sheet: a flexible and gradient electrochromic film［J］.Chemical Communications 2012, 48(66):8252.

[28] Wei W X,Huang Q L. Preparation of cellophane-based substrate and its SERS performance on the detection of CV and acetamiprid［J］.Spectrochimica Acta Part A Molecular & Biomolecular Spectroscopy 2017, 193: 8-13.