2019-5-26 · Andrew Mills, Michael McFarlane. ... Investigation of photoelectrochemical reduction of cupric ions over TiO2 in the presence of methanol. Journal of Photochemistry and Photobiology A: ... Heterogeneous Reactions of Nitrogen Monoxide on Titanium Dioxide Photocatalysts in Solutions.
2015-3-19 · 1.0 g as-prepared TiO 2 nanotubes were weighed out and placed in a laboratory plastic ball mill, together with 0.5 mL ethanol and 10.0 g agate balls (5.0 mm in diameter) as milling media. The grinding was conducted in a shaker mill (QM-3B, Nanjing NanDa Instrument Plant) that was operated at the speed of 600 rpm for 0.5, 5, and 10 h, respectively.
2021-3-8 · The synthesis of nanostructured metal oxides for gas detection is one of the most promising applications of high-energy ball milling. Some significant works have been reported in recent years. Jiang et al. prepared metastable a- Fe 2 O 3 −MO 2 (M: Ti and Sn) solid solutions by high-energy milling for C 2 H 5 OH detection.
2019-12-18 · Obviously, the removal rate constant of Cr 6+ ions over the TiO 2-HT-300 and TiO 2-HT-400 PC is 12.5 and 2.5 folds higher than that for TiO 2-HT-U, TiO 2-HT-400, respectively. Figure 6
2019-2-13 · In this work, columnar TiO 2 arrays were prepared on FTO substrate by hydrothermal method. The Bi 2 S 3 film was deposited on the TiO 2 arrays to form TiO 2 /Bi 2 S 3 composite films by a sequential hydrothermal deposition method. The …
2019-9-20 · The influence of dry-soft grinding and photodeposition of gold (Au) or platinum (Pt) in the improvement of the photoactivity of TiO 2 synthesized by an integrated sol-gel and solvothermal method was studied. TiO 2 was modified by a dry-soft grinding process in a planetary ball mill (TiO 2 (G)). Subsequently, Au or Pt particles were photodeposited in both unmodified TiO 2 and TiO 2 (G ...
2014-7-22 · TiO 2 nanoparticles (Aeroxide TiO 2 P25) and fine iron powder (purity ≥97 %, particle size of about 40 μm) were obtained from Quimidroga (Spain) and from Sigma …
Abstract. The influence of dry-soft grinding and photodeposition of gold (Au) or platinum (Pt) in the improvement of the photoactivity of TiO 2 synthesized by an integrated sol-gel and solvothermal method was studied. TiO 2 was modified by a dry-soft grinding process in a planetary ball mill (TiO 2 (G)). Subsequently, Au or Pt particles were photodeposited in both unmodified TiO 2 and TiO 2 (G ...
2011-4-30 · Photodeposition of gold was performed over the calcined TiO 2 powder using gold (III) chloride trihydrate (HAuCl 4, Aldrich 99.9%) as metal precursor. Different series of samples were prepared varying parameters such as light intensity and deposition time during the photodeposition.
2015-8-1 · Here we reported that UV light irradiation can significantly enhance sensitivity of Ti/TiO 2 electrode for determination of trace heavy metal ions (such as Cu 2 +, Pb 2 + and Cd 2 +) owing to the photodeposition of metal ions on the surface of electrodes.The sensitivity of heavy metal ions can be selectively enhanced over the Ti/TiO 2 electrode, which is attributed to matching between ...
The sensitivity of heavy metal ions can be selectively enhanced over the Ti/TiO2 electrode, which is attributed to matching between potential of heavy metal ions and the position of the conduction ...
2016-5-5 · The RP-TiO 2 nanohybrid photocatalysts was synthesized via the simple milling of commercially available RP powder and TiO 2 with 50 wt. % RP …
2003-7-23 · Photocatalytic oxidation of CO to CO2 was carried out with TiO2 and Pt/TiO2 catalysts at room temperature to investigate the effect of Pt deposition. The rate for CO photooxidation by Pt/TiO2 was higher than that by TiO2. The reaction rate increased with incident light intensity to the power of 0.7 for Pt/TiO2 and 0.5 for TiO2. The dependency of reaction rate on the concentration of CO and ...
2021-11-12 · Platinum group metal and platinum group metal oxide coated semiconductor photocatalysts are prominent in heterogeneous systems that are capable of the photoreduction, oxidation and cleavage of water. There is a recent renaissance in work on water-splitting semiconductor-sensitised photosystems, but there are continued concerns over their ...
2019-5-25 · Andrew Mills,, Jishun Wang, and, ... Photoinduced Reaction at TiO2 Particles. Photodeposition from NiII Solutions with Oxalate. The Journal of Physical Chemistry 1996, 100 ... Photonic efficiency and mechanism of photocatalytic molecular hydrogen production over platinized titanium dioxide from aqueous methanol solutions.
TiO2, ZnO, and SnO2 metal oxides were synthesized by the sol-gel method and heterojunctions were fabricated by combining TiO2 with either ZnO or SnO2 in a 1:1 ratio using mechanochemical ball ...
2019-3-27 · The expected reaction between a metal in solution and TiO 2 is reductive photodeposition: 26 M n+1 (aq) + ne − → M(s), where oxygen vacancies in the semiconductor substrate act as traps for the photogenerated electrons 55 allowing the …
2012-2-3 · Synthesis of nanomaterials by a simple, low cost and in high yield has been a great challenge since the very early development of nanoscience. Various bottom and top down approaches have been developed so far, for the commercial production of …
2014-6-11 · Bimetallic TiO 2 -based photocatalysts have attracted considerable attention in recent years as a class of highly active catalysts and photocatalysts under both UV and Vis light irradiation. Bimetallic noble metal structures deposited on TiO 2 possess the ability to absorb visible light, in a wide wavelength range (broad LSPR peak), and therefore reveal the highest level of activity as a ...
Soo-Wohn Lee''s 30 research works with 464 citations and 2,759 reads, including: Microwave-assisted solvothermal synthesis of chrysanthemum-like-VO2 architecture
2019-7-15 · Five weight percent of Fe-doped TiO2 nanoparticles were prepared via ball milling route. The effect of both doping and milling on the evolution of structure and microstructure alongside with optical and magnetic properties was investigated. XRD analysis revealed the coexistence of all TiO2 phases, namely anatase, brookite, and rutile with a signature of Fe cluster; meanwhile, the phase ratio ...
After 24 hours ball milling at 250 rpm, black phosphorus-C60 with tightly bound surface hybrids were formed (Figure 10B,C). In addition, the hybrids g-C 3 N 4 /TiO 2 and g-C 3 N 4 @ZnO prepared successfully via ball milling method further confirm the feasibility and universality of this method for 2D materials. 112, 113
2014-7-22 · TiO 2 nanoparticles (Aeroxide TiO 2 P25) and fine iron powder (purity ≥97 %, particle size of about 40 μm) were obtained from Quimidroga (Spain) and from Sigma-Aldrich ® (Portugal), respectively, and used as the starting materials.. Preparation of …
2020-10-19 · Static Coefficient of Friction. The static friction coefficient (μ) between two solid surfaces is defined as the ratio of the tangential force (F) required to produce sliding divided by the normal force between the surfaces (N) μ = F /N . For a horizontal surface the horizontal force (F) to move a solid resting on a flat surface
2021-11-3 · Among the various photocatalytic materials, titanium dioxide (TiO2) is the dominant and most widely studied because of its exceptional physico-chem. characteristics. Surface decoration of metal/non-metal on TiO2 nanoparticles is an outstanding technique to revamp its electronic properties and enrich the H2 prodn. efficiency.
2021-11-19 · International Journal of Minerals, Metallurgy and Materials (IJMMM, ISSN 1674-4799, CN 11-5787/TF, monthly, started in 1994, formerly known as Journal of University of Science and Technology Beijing) is an international journal devoted to publishing original research articles (and occasional invited reviews) on all aspects of minerals processing, physical metallurgy, process metallurgy, and ...
2021-2-9 · Arsenic contamination and its removal from the ground or natural water become an inevitable research line as it is highly carcinogenic and toxic. In the last few decades, nanotechnology has been achieved to provide accessible clean water for all …
2017-11-30 · Samples of deposited Pd on titania were prepared through photoreduction method in the absence and presence of different organic alcohols with different carbon numbers and molar weights as sacial electron donors (SED). It was observed that …
2019-7-3 · TiO 2 /ZnO nanocomposite (TZO NC) is prepared by ball milling process where the powder mixture is placed in the ball mill in the required proportion i.e. 1:1 (2 g TiO 2: 2 g ZnO) which is then subjected to high energy collision process facilitated by tungsten carbide balls of 10 mm diameter. Here, the ball to powder weight ratio is fixed at 10 ...