TiO2 NW Research Articles

Simultaneous Recovery of NH3–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System

The problem of high concentration of NH3–N and heavy metals in manganese residue leachate (MRL) needs to be solved urgently as it can harm the surrounding soil, water bodies, and even the ecological system. In this study, a novel electrodialysis system with a self-growing titanium dioxide nanowire (TiO2 NW) electrode is proposed to recover NH3–N and remove heavy metals from MRL. Plant growth experiments and ecotoxicity studies are used to evaluate the ecological risks of the reuse of recovered NH3–N. In the electrodialysis system with a proton membrane to separate the two chambers, 87%–97% removal of heavy metals and 95% recovery of NH3–N from MRL can be achieved. The obtained recovery solution from the cathode chamber can greatly promote the plant growth. The ecotoxicity experiment results further reveal that the recovered NH3–N can optimize the soil microbial community structure by promoting the reproduction of the genus Bacillus and thus improve soil fertility. This work can provide a new perspective on the harmless disposal and resource recovery of MRL.

Plasmonic Au NPs embedded Ytterbium-doped TiO2 nanocomposites photoanodes for efficient indoor photovoltaic devices

Herein, we present an all-inclusive investigation on the effect of plasmonic gold nanoparticles (Au NPs) embedded Yb-doped TiO2 nanostructured photoanode for efficient photovoltaics devices. Optimally doped Yb (0.5 mol%)-TiO2 nanoparticles (NPs) were synthesised by solid-state grinding. Their structural, morphological, optical, and surface properties were evaluated using XRD, Raman spectroscopy, SEM-EDX, UPS, and XPS. Results show that Yb-doped TiO2 NPs form, reducing the rutile phase and shifting the fermi level. After demonstrating the enhanced properties of Yb-doped TiO2 NPs, we introduced single anatase phase nanowire structures for comparison. Dielectric measurements show Yb-doped TiO2 NW's higher conductivity. Plasmon-induced enhancement of light absorption is achieved by implanting Au NPs into Yb-doped TiO2 NW for additional light harvesting. As a proof of concept, optimised Yb-doped TiO2 photoanode DSSC were fabricated and tested under the AM1.5, 1 sun illumination exhibiting photoconversion efficiency (PCE) of 6 %. Devices employing Yb-doped TiO2 NW: Au NPs photoanode exhibited Jsc to 18.8 % mA-cm−2 and PCE% to 8 %. Under white LED (1000 LUX) exhibited PCE of 13.9 % for Au/Yb-TiO2 NW photoanode. The electrochemical impedance spectroscopy (EIS) measurements on these devices established the Yb-doped TiO2 NW: Au NPs photoanode based device exhibited the lowest charge transport resistance (R2:86 Ω) and charge recombination resistance (R3:20 Ω) which are consistent with the J-V characteristics suggesting the potential use of these photoanode for indoor photovoltaics (IPV) and in general any devices for allied energy and environmental areas of research.

Virus and bacterial removal ability of TiO2 nanowire-based self-supported hybrid membranes

Development and application of hybrid membranes containing multi-component materials are increasing day by day in the fields of environmental protection and water treatment. In this research, the efficiency of titania nanowire (TiO2 NW)-based self-supported hybrid membranes was investigated in the removal of Escherichia coli (E. coli) bacteria and MS2 bacteriophages from contaminated water mimicking the microorganism suspension. Furthermore, toxicology tests on the as-prepared membranes were also performed. TiO2 NWs were coated with iron(III) oxide (Fe2O3) and copper(II) oxide (CuO) nanoparticles, respectively, and cellulose was used as reinforcement material. It was found that, the functionalisation strongly affected the MS2 removal ability of as-prepared membranes, which can be due to the electrostatic interactions between the surface of hybrid membrane and the bacteriophages. The most efficient removal (greater than or equal to 99.99%) was obtained with the TiO2 NW-CuO-cellulose membrane at pH 7.0. The fabricated hybrid membranes were characterized by micro computed tomography (μCT), Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), dynamic light scattering (DLS), contact angle measurement and inductively coupled optical emission spectrometry (ICP-OES) techniques. This study shows a simple route of the usage of novel and effective inorganic nanowire-based hybrid membranes for bacteria and virus removal, providing new pathways in the field of water filtration technologies.

Preparation and Photocatalytic Performance of TiO2 Nanowire-Based Self-Supported Hybrid Membranes.

Nowadays, the use of hybrid structures and multi-component materials is gaining ground in the fields of environmental protection, water treatment and removal of organic pollutants. This study describes promising, cheap and photoactive self-supported hybrid membranes as a possible solution for wastewater treatment applications. In the course of this research work, the photocatalytic performance of titania nanowire (TiO2 NW)-based hybrid membranes in the adsorption and degradation of methylene blue (MB) under UV irradiation was investigated. Characterization techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray powder diffractometry (XRD) were used to study the morphology and surface of the as-prepared hybrid membranes. We tested the photocatalytic efficiency of the as-prepared membranes in decomposing methylene blue (MB) under UV light irradiation. The hybrid membranes achieved the removal of MB with a degradation efficiency of 90% in 60 min. The high efficiency can be attributed to the presence of binary components in the membrane that enhanced both the adsorption capability and the photocatalytic ability of the membranes. The results obtained suggest that multicomponent hybrid membranes could be promising candidates for future photocatalysis-based water treatment technologies that also take into account the principles of circular economy.

Plasmonic Ag nanoparticles anchored ethylenediamine modified TiO2 nanowires@graphene oxide composites for dye-sensitized solar cell

Proficient photoanode is always vital for obtaining high efficiency in dye-sensitized solar cell (DSSC). Herein, ethylenediamine functionalized TiO2 nanowires graphene oxide (TiO2 NW-NH2/GO) has been synthesized and incorporated with Ag nanoparticles. The prepared plasmonic nanocomposites are characterized by various techniques, such as, diffused reflectance, Raman and X-ray photoelectron spectroscopies, X-ray diffraction, and Scanning/transmission electron microscopies (SEM and TEM). The amine functionalized TiO2 NW-NH2/GO/Ag plasmonic nanocomposites exhibit strong light harvesting and better dye loading, leading to high efficiency. The DSSC integrated with TiO2 NW-NH2/GO/Ag nanocomposite photoanode exhibits remarkable photovoltaic performance (short-circuit current density (Jsc) of 15.09 mA cm−2 and an overall power conversion efficiency (ɳ) of 8.76%) which is double that of the DSSC with pure TiO2 NW photoanodes (4.05%). The enhancement of efficiency, mainly due to the increased current density, is attributed to the improved electron transfer at the photoanode/electrolyte interface. Ethylenediamine gives binding interaction between TiO2 and GO/Ag.

Monolithic Gold Nanoparticles/Thiol-β-cyclodextrin-Functionalized TiO2 Nanowires for Enhanced SALDI MS Detection and Imaging of Natural Products.

Surface-assisted laser desorption/ionization mass spectrometry (SALDI MS) has been successfully applied in the analysis of various small molecules. In this work, gold nanoparticles/thiol-β-cyclodextrin-functionalized TiO2 nanowires (AuNPs/SH-β-CD-TiO2 NWs) were prepared to enhance the performance of SALDI MS and mass spectrometry imaging (MSI). A monolithic TiO2 film was first grown on an indium tin oxide (ITO) glass slide via a modified sol-gel method and treated in an alkaline environment to form nanowires. TiO2 NWs were chemically modified by SH-β-CD for immobilizing AuNPs densely and strongly. Compared with the conventional organic matrix 2,5-dihydroxybenzoic acid (DHB), the prepared AuNPs/SH-β-CD-TiO2 NWs showed superior performances on detection sensitivity, repeatability, and analyte coverage. Analytes typically detectable with negative-ion matrix-assisted laser desorption/ionization (MALDI) MS could also be observed using AuNPs/SH-β-CD-TiO2 NWs in the positive ion mode. Its successful usage efficiently enhanced the SALDI MS detection of various small molecules such as carbohydrates, fatty acids, and bile acids in the positive ion mode. The developed SALDI substrate was further used to characterize and discriminate the natural and in vitro cultured Calculus Bovis, as well as natural and artificial Moschus. Furthermore, the spatial distribution of several natural products in spearmint leaves and potato tubers was explored by tissue imprinting and deposition on the AuNPs/SH-β-CD-TiO2 NW surface for SALDI MSI in dual-polarity mode, respectively. The wide application and satisfied detection sensitivity make AuNPs/SH-β-CD-TiO2 NWs ideal for SALDI MS and MSI of various natural products.

Enhanced performance and degradation of wastewater in microbial fuel cells using titanium dioxide nanowire photocathodes.

This paper explores the decolorization of dye wastewaters and electricity generation using dual-chamber microbial fuel cells (MFCs) with titanium dioxide nanowire (TiO2 NW) photocathodes. TiO2 NW cathodes under ultraviolet light are observed to enhance the reduction of azo dye Active Red 30 (AR 30) and electricity generation. The analysis of electrochemical impedance spectra (EIS) indicates acceleration of the electron transfer processes of photoelectrode reduction by the photocatalysis of TiO2 NWs, with polarization resistance of the photocathode being 10.45 Ω under light irradiation from 294 Ω in the dark. Ultraviolet-visible light spectroscopy shows that the maximum degradation of the MFCs is 78.1%; the azo bond of AR 30 may be cleaved by photoelectrons generated by light irradiation of the illuminated TiO2 NW photocathode. The electricity produced by microbial fuel cells (MFCs) is expected to enhance the reductive decolorization of the azo dye AR 30 solution.

Manganese and Graphene Included Titanium Dioxide Composite Nanowires: Fabrication, Characterization and Enhanced Photocatalytic Activities.

We report the detailed microstructural, morphological, optical and photocatalytic studies of graphene (G) and manganese (Mn) co-doped titanium dioxide nanowires (TiO2(G–Mn) NWs) prepared through facile combined electrospinning–hydrothermal processes. The as-prepared samples were thoroughly characterized using X-ray diffraction (XRD), transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and diffuse reflectance spectroscopy (DRS). XRD studies reveal the formation of mixed anatase-rutile phases or rutile phase depending on the dopant (Mn) precursor concentrations in the electrospinning dope and calcination temperature. The evaluation of lattice parameters revealed that the incorporation of Mn species and carbon atoms in to the lattice of anatase or rutile TiO2 could occur through substituting the sites of oxygen atoms. XPS results confirm the existence of Mn2+/Mn3+ within the TiO2 NW. Raman spectroscopy provides the evidence for structural modification because of the graphene inclusion in TiO2 NW. The optical band gap of G–Mn including TiO2 is much lower than pristine TiO2 as confirmed through UV-vis DRS. The photocatalytic activities were evaluated by nitric oxide (NOx) degradation tests under visible light irradiation. Superior catalytic activity was witnessed for rutile G–Mn-co-doped TiO2 NW over their anatase counterparts. The enhanced photocatalytic property was discussed based on the synergistic effects of doped G and Mn atoms and explained by plausible mechanisms.

RETRACTED: Narrow band gap reduced TiO2-B:Cu nanowire heterostructures for efficient visible light absorption, charge separation and photocatalytic degradation

Hydrothermally synthesized TiO2-B single-crystalline NWs were uniformly Cu-decorated via co-precipitation method to grow hybrid TiO2-B:Cu–NWs. Starting from commercial TiO2 NPs, systematic evolution of TiO2-B, R–TiO2-B and R–TiO2-B:Cu NW-structures in steps, identified a gradual narrowing of band gap from 3.23 to 2.20 eV. Generation of Ti3+ and oxygen vacancy (Ov) related defect states in TiO2 lattice facilitates enhancing absorption of visible light and also inhibit faster charge recombination via trapping of photogenerated charge carriers. Cu2O nanoparticles intimately attached with TiO2 NW surface enhance the charge carrier separation via interfacial charge transfer between Cu2O and TiO2, involving direct Z-scheme mechanism. Further, metallic copper, being present with an intermediate band gap, can promote electron tunneling across Cu-Cu2O-TiO2 ternary hetero-junctions and dissociate more efficiently the photoexcited electrons and holes from individual pairs and make those amply available for dye degradation reactions which proceed more efficiently in spite of the reduced surface area and porosity of the hetero-structured photocatalyst. Strongly reductive electrons (e−) in the CB of Cu2O produce highly reactive superoxide radicals (O2−) which dominantly contribute in dye degradation, while hydroxyl radicals (OH) produced via oxidation by holes (h+) in the VB of TiO2 also degrade the dye molecules in a relatively lesser significance. The R-TiO2-B:Cu0.2 NW catalyst degrades the MO dye very rapidly with a rate constant ~0.41 min−1 and an efficiency of dye degradation ~91%, and the MB dye even faster with a rate constant ~0.54 min−1 and an efficiency of dye degradation of ~96%, during 60 min of visible light exposure, which are significantly high as compared to the data available in the contemporary literature.

Study on Hybrid Structure on TiO2 Nanorods and Graphene Enhanced P3HT for Solar Cells Application

Recently, hybrid structure graphene / organic nano composite have been studied for low cost photovoltaic devices (P3HT/Graphene ) can be formed by solution process at room temperature, in this study, we demonstrate a hybrid solar cells composite of (Graphene-P3HT/TiO2 Nanowire to allowed for distributed the organic materials among the nanorode, the organic which cover by spin coating to provide higher mobility and conductivity of (G-P3HT) where employed as P-type or Hole transparent materials with TiO2 NW as a photoanode. The nanocoposite of P3HT (G-P3HT, 10% wt graphene) deposited on TiO2 NW by spin couter technique. The solar cells based on vertical TiO2 NW nanowire arrays by utilizing a spin couter spin speed. The initial results showed the power conversion efficiency of 0.5 %. The cells with G-P3HT showed different performance. The power conversion efficiency was improved from 0.3 for spin couter speed 300 rpm to 1.3 at 500 rpm for G-P3HT among different spin speed solar cells. It exhibited tunable power conversion efficiency with spin speed, with very thin materials and in expensive processing ,hybrid G/P3HT /Nanorod solar cells are promising as an economically viable alternative energy solution

Preparation of Visible Light Photocatalytic Graphene Embedded Rutile Titanium(IV) Oxide Composite Nanowires and Enhanced NOx Removal

The quest for developing highly efficient TiO2-based photocatalysts is continuing and, in particular, evolving a new strategy is an important aspect in this regard. In general, much effort has been devoted to the anatase TiO2 modifications, despite there being only a few recent studies on rutile TiO2 (rTiO2). To the best of our knowledge, studies on the preparation and characterization of the photocatalysts based on the intentional inclusion of graphene (G) into rTiO2 nanostructures have not been reported yet. Herein, we develop a new type of TiO2-based photocatalyst comprising of G included pure rTiO2 nanowire (abbreviated as rTiO2(G) NW) with enhanced visible light absorption capability. To prepare rTiO2(G) NW, the G incorporated titanate electrospun fibers were obtained by electrospinning and subsequently heat treated at various temperatures (500 to 800 °C). Electrospinning conditions were optimized for producing good quality rTiO2(G) NW. The rTiO2(G) NW and their corresponding samples were characterized by appropriate techniques such as X-ray diffraction (XRD), scanning electron microscopy, high-resolution transmission electron microscopy and UV-vis diffuse reflectance spectroscopy to ascertain their material characteristics. XRD results show that the lattice strain occurs upon inclusion of G. We present here the first observation of an apparent bandgap lowering because of the G inclusion into TiO2 NW. While anatase TiO2 NW exhibited poor visible light photocatalysis towards NOx removal, the rTiO2(G) NW photocatalyst witnessed a significantly enhanced (~67%) photocatalytic performance as compared to anatase TiO2(G) NW. We concluded that the inclusion of G into rTiO2 nanostructures enhances the visible light photoactivity. A plausible mechanism for photocatalysis is suggested.

Effect of Ag Doping on the Glancing Angle Deposition Synthesized TiO₂ Nanowire for Enlarged Photodetection.

Glancing Angle Deposition (GLAD) technique was employed to synthesize Ag doped TiO2 nanowire on n-type Si-substrate. FEG-SEM confirms the perpendicular growth of Ag doped TiO2 nanowire with an average height and diameter of ~554 nm and ~40 nm respectively. The composition analysis by EDAX indicates the presence of Ti, O, Si and Ag elements. The increase in PL intensity has been observed with the increase in temperature. Following the growth of Ag doped TiO2 nanowire, Au contacts were deposited to form the Ag doped TiO2 NW based Schottky detector. The enhancement in the photoresponse of the device was observed at -4 V. The device also shows low leakage current of -0.049 μA at -1 V which makes it suitable for enlarged photodetector application.

Highly selective non-enzymatic electrochemical sensor based on a titanium dioxide nanowire-poly(3-aminophenyl boronic acid)-gold nanoparticle ternary nanocomposite.

A novel three component (titanium dioxide nanowire (TiO2 NW), poly(3-aminophenyl boronic acid) (PAPBA) and gold nanoparticles (Au NPs)) based ternary nanocomposite (TNC) (designated as TiO2 NW/PAPBA–Au TNC) was prepared by a simple two-stage synthetic approach and utilized for the fabrication of a non-enzymatic (enzyme-free) glucose (NEG) sensor. In stage 2, the PAPBA–Au NC was formed by oxidative polymerization of 3-APBA using HAuCl4 as oxidant on the surface of pre-synthesized TiO2 NW via electrospinning (stage 1). The formation of PAPBA–Au NC as the shell on the surface of the TiO2 NW (core) was confirmed by field emission scanning electron microscopy (FE-SEM). Notably, we obtained a good peak to peak separation, and a high peak current for the redox Fe(CN)63−/4− process indicating excellent electron transfer capability at the glassy carbon electrode (GCE)/TiO2 NW/PAPBA–Au TNC interface. Also, the fabricated TiO2 NW/PAPBA–Au TNC provides excellent electrocatalytic activity towards glucose detection in neutral (pH = 7.0) phosphate buffer solution. The detection of glucose was monitored using differential pulse voltammetry. The obtained sensitivity and detection limits are superior to many of the TiO2 based enzymatic and non-enzymatic glucose sensors reported in the literature. Furthermore, the TiO2 NW/PAPBA–Au TNC sensor is preferred because of its high selectivity to glucose in the presence of co-existing interfering substances and practical application for monitoring glucose in human blood serum samples.

Designed synthesis of anatase–TiO2 (B) biphase nanowire/ZnO nanoparticle heterojunction for enhanced photocatalysis

A novel ZnO NP/mesoporous anatase–TiO2 (B) NW heterojunction photocatalyst was synthesized for environmental purification and hydrogen evolution.

Enhanced photoelectrochemical biosensing performances for graphene (2D) – Titanium dioxide nanowire (1D) heterojunction polymer conductive nanosponges

In this work, an efficient photoelectrochemical (PEC) biosensing platform has been designed and developed based on graphene (G) through modifying it into an electroconductive polymer nanosponge (EPNS) and with the incorporation of titanium dioxide nanowires (TiO2 NW) (designated as TiO2 (G) NW@EPNS). Functioning as an efficient immobilization matrix for immobilization of the enzyme Cytochrome C (Cyt C), TiO2 (G) NW@EPNS delivers features for an efficient PEC biosensor, such as fast kinetics of direct electron transfer (DET) to the electrode and effective separation of photogenerated holes and electrons. TiO2 (G) NW@EPNS exhibited DET to the electrode with a highly heterogeneous electron transfer rate constant of 6.29±0.002s−1. The existence of TiO2, G and EPNS in conjunction facilitates DET between the electrode surface and the protein. The fabricated PEC nitrite ion (NO2−) biosensor showed superior analytical performances such as wide linear range (0.5–9000µM), lowest detection limit (0.225mM) and excellent specificity for NO2− in the presence other interferences at a very low bias potential (−0.11V). This study opens up the feasibility of fabricating a PEC biosensor for any analyte using a matrix comprising of G and a photoactive material and EPNS, because these components synergistically contribute to effective immobilization of on enzyme, DET to the electrode and simple read-out under the light.

Growth of highly textured PbTiO3 films on conductive substrate under hydrothermal conditions

Perovskite structure (ABO3) thin films have wide applications in electronic devices due to their unique properties, including high dielectric permittivity, ferroelectricity and piezoelectric coupling. Here, we report an approach to grow highly textured thick lead titanate (PbTiO3) films on conductive substrates by a two-step hydrothermal reaction. Initially, vertically aligned TiO2 nanowire arrays are grown on fluorine-doped tin oxide (FTO) coated glass, which act as template crystals for conversion to the perovskite structure. The PbTiO3 films are then converted from TiO2 NW arrays by diffusing Pb2+ ions into the template through a second hydrothermal reaction. The dielectric permittivity and piezoelectric coupling coefficient (d33) of the PbTiO3 films are as high as 795 at 1 kHz and 52 pm V−1, respectively. The reported process can also potentially be expanded for the assembly of other complex perovskite ATiO3 (A = Ba, Ca, Cd, etc) films by using the highly aligned TiO2 NW arrays as templates. Therefore, the approach introduced here opens up a new door to synthesize ferroelectric thin films on conductive substrates for application in sensors, actuators, and ultrasonic transducers that are important in various industrial and scientific areas.

Mechanical characteristics of individual TiO2 nanowire and TiO2 nanowire bundle on micro-manipulator nanoprobe system

The individual TiO2 nanowire and TiO2 nanowire bundle were prepared through a simple hydrothermal reaction of alkali with the titanium (Ti) metal and with TiO2 powder, respectively. A newly developed test platform which contained the MM3A micro-manipulator nanoprobe system installed in the scanning electron microscope (SEM) chamber was then introduced for the test of the mechanical properties of titanium dioxide nanowires (TiO2 NWs), either an individual or a bundle. The mechanical characteristics of the individual TiO2 NW and the TiO2 NW bundle were determined using a micro-cantilever model and a three-point bending model, respectively. In the tests, a nanoprobe tip was used to apply lateral force and deflect NWs. The load and deflection were measured simultaneously by Spring Table and SEM. And then Young's modulus were calculated based on their respective theoretical formula. The average value of Young's modulus for an individual TiO2 NW and a bundle of TiO2 NWs were found to be 120.39GPa and 92.01GPa, respectively. The TiO2 NW Young's modulus exhibits no obvious size effect while the scale of TiO2 NW was in the range of 100nm−100μm. The bending method in this new test platform could be widely applied to measure the mechanical properties of all 1D nanostructures under different scale conveniently and accurately, which is helpful for the feasibility of replacing current electrical and optical devices with NWs integrated devices.

Performance optimization of self-powered ultraviolet detectors based on photoelectrochemical reaction by utilizing dendriform titanium dioxide nanowires as photoanode

Dendriform titanium dioxide nanowires (D-TiO2 NWs) with high aspect ratio and density serve as a model architecture for high-performance self-powered ultraviolet (UV) detectors. The photo-sensing performance is characterized by integrating D-TiO2 NWs into a photoelectrochemical cell. The short-circuit current density value of the D-TiO2 NWs based UV detector is 176% and 46% higher than that of the bare TiO2 NW film and TiO2 nanocrystalline film since it offers excellent ultraviolet absorption, efficient charge carrier separation and fast electron transport. The incident power conversion efficiency can reach 14.5%, which promises a high sensitivity to the UV light. Under UV irradiation, the detector made of D-TiO2 NWs exhibits a high responsivity of 0.61A/W, a high on/off ratio of 1903 (incident power density 25mWcm−2) and a fast response time of 5.9ms. Combined with visible-blind characteristics and photosensitivity linearity in wide light intense range, the D-TiO2 NWs based self-powered UV detector demonstrates promising application in various fields.

Enhanced electrochromic properties of a TiO2nanowire array via decoration with anatase nanoparticles

Construction of a micro-/nanostructured TiO2 film has been considered to be an important way to enhance the electrochemical properties and electrochromic performance of the material. Herein, we investigated the electrochromic properties of a nanocomposite TiO2 film prepared by decorating rutile a TiO2 nanowire (TiO2 NW) array with anatase TiO2 nanoparticles (TiO2 NPs) via a facile two-step synthesis method. Owing to its large active surface area and high transparency, the TiO2 NW–NP composite film supported a greater number of sites for Li+ ion intercalation and extraction. As a result, the TiO2 NW–NP film displayed higher optical contrast, coloration efficiency and transient current density compared with NW and NP films, demonstrating that enhanced electrochromic properties could be achieved using the NW–NP composite structure.

Synthesis of Titania Nanotubes and Titania Nanowires by Combination Sonication-hydrothermal Treatment and their Photocatalytic Activity for Hydrogen Production

Titania nanotubes (TiO2 NT) and Titania nanowires (TiO2 NW) were fabricated using TiO2 Degussa P25 (TiO2 P25) nanoparticle as precursors via a sonication-hydrothermal combination approach. The prepared catalysts were characterized by means of an X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), ultravioletvisible diffuse reflectance spectroscopy (DRS) and the Brunauer-Emmett-Teller technique (BET). The photocatalytic activity of prepared catalysts was evaluated for photocatalytic H2 evolution from an aqueous methanol solution. The results showed that activity of the catalyst not only depends on the morphology of its catalysts, but also on the crystalinity and surface area. Hydrogen production of TiO2 NT was about three times higher than TiO2 P25 and TiO2 NW was two times higher than TiO2P25.