Superhydrophilic Cu-doped TiO2 thin film for solar-driven photocatalysis

Wang, Shuangyi; Meng, Keke; Zhao, Lei; Jiang, Q.; Lian, Jianshe

doi:10.1016/j.ceramint.2013.09.028

Cited by 60 publications

(36 citation statements)

References 19 publications

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“…There is no formation of hydroxyl (OH -) species in Cu/TiO 2 films as evident from the symmetric nature of O1s core-level spectra. On the other hand, hydroxyl and adsorbed oxygen species are observed in Cu/TiO 2 films obtained from reactive DC magnetron sputtering and solgel spin coating methods [26,31]. In our present work, there is no formation of surface hydroxide which plays vital role in the degradation process.…”

Section: Xps Studiesmentioning

confidence: 91%

“…Table 1 summarizes details of literature available on Cu/TiO 2 coatings produced by different methods [12,[26][27][28][29][30][31][32][33][34][36][37][38][39][40][41][42][43][44] that shows wide range of copper concentrations and its effect on TiO 2 phase. However, there is a scarcity of investigations of dopant effect on optical properties of TiO 2 films prepared by reactive magnetron sputtering technique.…”

Section: Introductionmentioning

confidence: 99%

“…Cu/TiO 2 films have been prepared by various techniques such as DC magnetron sputtering [26,27], reactive magnetron sputtering [28], co-sputtering [29,30], sol-gel [12,[31][32][33][34], pulsed laser deposition [35] and chemical vapour deposition [36]. Table 1 summarizes details of literature available on Cu/TiO 2 coatings produced by different methods [12,[26][27][28][29][30][31][32][33][34][36][37][38][39][40][41][42][43][44] that shows wide range of copper concentrations and its effect on TiO 2 phase.…”

Section: Introductionmentioning

confidence: 99%

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Cu/TiO2 thin films prepared by reactive RF magnetron sputtering

et al. 2015

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Cu/TiO 2 thin films were deposited on glass substrates by reactive RF magnetron sputtering technique. Crystalline structure, surface morphology and electronic structure were studied using X-ray diffraction (XRD), field emission scanning electron microscopy, atomic force microscopy and X-ray photoelectron spectroscopy (XPS). Transmittance and absorptance of these films were characterized by UV-Vis spectroscopy. XRD patterns demonstrate that TiO 2 films deposited on glass substrate at 300°C are observed to be in pure anatase phase, whereas Cu/TiO 2 films are amorphous in nature at 300°C substrate temperature. The crystallinity of Cu/TiO 2 thin films decreases with increasing the dopant concentrations of Cu in TiO 2 films. XPS studies show that Cu is in ?2 oxidation state in all films. The optical band gap of Cu/TiO 2 films decreases from *3.3 to *2.0 eV with the increase in the copper concentration. Further, antimicrobial studies of Cu/TiO 2 films with *3.9 at.% Cu exhibit high transmittance and best antimicrobial activity against E. coli and S. aureus compared to other doped films.

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Section: Xps Studiesmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cu/TiO2 thin films prepared by reactive RF magnetron sputtering

et al. 2015

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“…[12][13][14][15] and transition metals (TM) like Cu, Fe, Co, Ni, etc. [16][17][18]. It has been established by extensive researches that doping may apparently improve the photocatalysis, electrical, and optical properties of TiO 2 [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Structural, optical, and magnetic study of Ni-doped TiO2 nanoparticles synthesized by sol–gel method

et al. 2018

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In this research, the effects of transition metal (Ni) doping to metal-oxide nanoparticles (TiO 2 ) were studied. Various weight ratios (5, 10, 15, and 20%) of Ni-to-TiO 2 nanoparticles were synthesized using the sol-gel technique. These doped nanoparticles were prepared using titanium butoxide and nickel nitrate as precursors and methanol as a solvent. The effects of Ni doping to TiO 2 were examined using a variety of characterization techniques, X-ray diffraction (XRD), Fourier-transform-infrared (FTIR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, field-emission scanning electron microscopy (FESEM), and vibrating sample magnetometer (VSM). The XRD reveals that the Ni-doped TiO 2 crystallizes in a tetragonal structure with anatase phase. The particle size and lattice strain were calculated by Williamson-Hall equation. The presence of strong chemical bonding and functional groups at the interface of TiO 2 nanoparticles was confirmed by FTIR. The optical properties of undoped and doped samples were recorded by UV-Vis spectroscopy. The saturation magnetization (M s ) was found higher for undoped as compared to doped samples. The surface morphology and the element structure of the Ni-doped TiO 2 nanoparticles were examined by FESEM.

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“…The O1s spectra present three peaks that appear in both samples (Fig. 7c,d), which are attributed to lattice oxygen from TiO 2 and copper oxides, surfaces hydroxyl oxygen/OH groups and adsorbed H 2 O at 530.07, 531.05, 532.35 eV and 530.45, 531.31, 532.24 eV for TiO 2 and TiO 2 -0.5, respectively [43][44][45][46][47]. The results shows that the TiO 2 -0.5 sample present more adsorbed oxygen than TiO 2 with relative areas of 22.52% (surface OH groups) and 24.57% (adsorbed H 2 O) compared with 19.79% and 19.85% from no doping sample.…”

Section: Textural Analysis From N 2 Isothermsmentioning

confidence: 91%