Influence of N2 annealing on TiO2 tubes structure and its photocatalytic activity
Source abstract
Abstract
In this work, the TiO2 tubes (TBs) were prepared by solvothermal method. The morphology and phase structure of TiO2 TBs is significantly affected by N2 annealing temperature. XRD was used to characterize the phase structure of the as-prepared samples. The morphology and surface areas were characterized by SEM and N2 adsorption–desorption, which show that the tubes were assembled with about 100-nm nanosheets and small ball particles under 400 and 600 °C N2 annealing; when temperature reached 800 °C, the surface of tubes appeared a lot of collapse and many large holes. In addition, the surface areas of 400 °C TiO2, 600 °C TiO2, and 800 °C TiO2 TBs were significantly affected by N2 annealing. Most importantly, the UV-vis and electrochemical tests demonstrate 600 °C TiO2 TBs exhibit higher absorption intensity and photocurrent; thus, it possess on better photocatalytic activity. Therefore, the photocatalytic performance for TiO2 TBs is significantly co-affected by surface area and mix-phase.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (16)
Show source-provided references
1. Bettini LG, Dozzi MV, Foglia FD, Chiarello GL, Selli E, Lenardi C, Piseri P, Milani P (2015) Mixed-phase nanocrystalline TiO2 photocatalysts produced by flame spray pyrolysis. Appl Catal B Environ 178:226–232. https://doi.org/10.1016/j.apcatb.2014.09.01310.1016/j.apcatb.2014.09.013 ↗
2. Bian Z, Zhu J, Cao F, Huo Y, Lu Y, Li H (2010) Solvothermal synthesis of well-defined TiO(2) mesoporous nanotubes with enhanced photocatalytic activity. Chem Commun (Camb) 46(44):8451–8453. https://doi.org/10.1039/c0cc02998j10.1039/c0cc02998j ↗
3. Fan J, Zhao Z, Liu W, Xue Y, Yin S (2016) Solvothermal synthesis of different phase N-TiO2 and their kinetics, isotherm and thermodynamic studies on the adsorption of methyl orange. J Colloid Interface Sci 470:229–236. https://doi.org/10.1016/j.jcis.2016.02.04510.1016/j.jcis.2016.02.045 ↗
4. Li C, Wang J, Feng S, Yang Z, Ding S (2013) Low-temperature synthesis of heterogeneous crystalline TiO2–halloysite nanotubes and their visible light photocatalytic activity. J Mater Chem A 1(27):8045. https://doi.org/10.1039/c3ta11176h10.1039/c3ta11176h ↗
5. Li H, Shen X, Liu Y, Wang L, Lei J, Zhang J (2015) Facile phase control for hydrothermal synthesis of anatase-rutile TiO 2 with enhanced photocatalytic activity. J Alloys Compd 646:380–386. https://doi.org/10.1016/j.jallcom.2015.05.14510.1016/j.jallcom.2015.05.145 ↗
6. Nam CT, Falconer JL, Duc LM, Yang W-D (2014) Morphology, structure and adsorption of titanate nanotubes prepared using a solvothermal method. Mater Res Bull 51:49–55. https://doi.org/10.1016/j.materresbull.2013.11.03610.1016/j.materresbull.2013.11.036 ↗
7. Ohno T, Tokieda K, Higashida S, Matsumura M (2003) Synergism between rutile and anatase TiO2 particles in photocatalytic oxidation of naphthalene. Appl Catal A Gen 244(2):383–391. https://doi.org/10.1016/s0926-860x(02)00610-510.1016/S0926-860X(02)00610-5 ↗
8. Qiu J, Yu W, Gao X, Li X (2007) Fabrication and characterization of TiO2 nanotube arrays having nanopores in their walls by double-template-assisted sol–gel. Nanotechnology 18(29):295604. https://doi.org/10.1088/0957-4484/18/29/29560410.1088/0957-4484/18/29/295604 ↗
9. Şennik E, Alev O, Öztürk ZZ (2016) The effect of Pd on the H2 and VOC sensing properties of TiO2 nanorods. Sensors Actuators B Chem 229:692–700. https://doi.org/10.1016/j.snb.2016.01.08910.1016/j.snb.2016.01.089 ↗
10. Shen X, Zhang J, Tian B (2011) Microemulsion-mediated solvothermal synthesis and photocatalytic properties of crystalline titania with controllable phases of anatase and rutile. J Hazard Mater 192(2):651–657. https://doi.org/10.1016/j.jhazmat.2011.05.06610.1016/j.jhazmat.2011.05.066 ↗
11. Sun KC, Qadir MB, Jeong SH (2014) Hydrothermal synthesis of TiO2 nanotubes and their application as an over-layer for dye-sensitized solar cells. RSC Adv 4(44):23223. https://doi.org/10.1039/c4ra03266g10.1039/c4ra03266g ↗
12. Xie Y, Fu D (2010) Photoelectrocatalysis reactivity of independent titania nanotubes. J Appl Electrochem 40(7):1281–1291. https://doi.org/10.1007/s10800-010-0077-y10.1007/s10800-010-0077-y ↗
13. Xu J, Jin J, Ying Z, Shi W, Peng T (2015) Composite electrode of TiO2particles with different crystal phases and morphology to significantly improve the performance of dye-sensitized solar cells. RSC Adv 5(41):32536–32545. https://doi.org/10.1039/c5ra01122a10.1039/C5RA01122A ↗
14. Yang M, Jha H, Liu N, Schmuki P (2011) Increased photocurrent response in Nb-doped TiO2 nanotubes. J Mater Chem 21(39):15205. https://doi.org/10.1039/c1jm12961a10.1039/c1jm12961a ↗
15. Yu X, Wang L, Zhang J, Guo W, Zhao Z, Qin Y, Mou X, Li A, Liu H (2015) Hierarchical hybrid nanostructures of Sn3O4on N doped TiO2nanotubes with enhanced photocatalytic performance. J Mater Chem A 3(37):19129–19136. https://doi.org/10.1039/c5ta05023e10.1039/C5TA05023E ↗
16. Zhao Y, Li C, Liu X, Gu F (2007) Highly enhanced degradation of dye with well-dispersed TiO2 nanoparticles under visible irradiation. J Alloys Compd 440(1-2):281–286. https://doi.org/10.1016/j.jallcom.2006.09.03810.1016/j.jallcom.2006.09.038 ↗