SURFACE MODIFICATION OF TITANIUM DIOXIDE NANOTUBES WITH SULFUR FOR HIGHLY EFFICIENT PHOTOCATALYTIC PERFORMANCE UNDER VISIBLE LIGHT IRRADIATION

In this research, some metal sulfide nanoparticles (NPs) including ZnS, CdS and CuS NPs were prepared by a simple and low-cost co-precipitation method for the photocatalytic degradation of Bromothymol blue dye (BTB) under natural sunlight irradiation. The synthesized materials were characterized by[r]

Aliquots of reaction suspension were sampled for TEM study after 0, 30, 60 and 120 min of photocatalytic reaction. Samples which consisted of TiO 2 and M. lylae were centrifuged and pre- fixed in 3% glutaraldehyde for 2 h, washed two times with 0[r]

In this paper, we demonstrate the preparation of silibinin-loaded carbon nanotubes (SWSB) with surface coating agents via non-covalent approach as an effective drug delivery system. The resulting surface-coated SWSB nanocomposites are extensively characterized by Fourier transform infrared (FTIR) an[r]

The experimental results show that the highest photocatalytic activity was obtained from the Ag (5) doped Zn-0.75Al-0.25La-CO3 photocatalysts calcined at 500 0C with a degradation efficiency of 99,4 after 40 min of irradiation only. This study could provide a new route for the fabrication of high pe[r]

Photocatalytic degradation of MO
The photocatalytic activities were evaluated by MO degradation in aqueous media under visible light irradia- tion. For visible light irradiation, the reaction beaker was located axially and held[r]

2. Robust Sigma-Delta ADCs Design

Sigma-Delta ADCs have been widely used in data conversion applications due to the good resolution. However, oversampling and complex circuit behaviors render the transistor- level analysis of these designs prohibitively time consuming ([r]

The objectives of the thesis: Study on materials fabrication technology; structural - photocatalytic properties of TiO2 material, and TiO2 as the nanostructured variant. On the basis of such material system, the systematic and quantitative study on hydrophilicity or, in other words, the study of sur[r]

The objectives of the thesis: Study on materials fabrication technology; structural - photocatalytic properties of TiO2 material, and TiO2 as the nanostructured variant. On the basis of such material system, the systematic and quantitative study on hydrophilicity or, in other words, the study of sur[r]

Just as there are many sensing systems available, there are also many designs of friction measuring devices. 10 The unit shown in Figure 3 is attractive because of its simplicity. It is attached to a prime mover which moves horizontally and may be adjusted vertically to load the pin ag[r]

IMI composition ture strength Details of stated)
designation % Condition ° C MPa test MPa
Rotating bend
IMI 679 Sn 11.0 Air-cooled and Room Smooth Kt D 1 . 0 š 641 Ł Zr 5.0 aged rod 200 Smooth Kt D 1 . 0 š 510 Ł Al 2.25 400 Smooth Kt D 1 . 0 š 510 Ł Mo 1.0 450 Smooth Kt D 1 . 0 š 556 Si[r]

[6,7] . Therefore, doping of nanosized metal or metal oxide with ZnO gives a low recombination rate of photogenerated electron e hole pairs and increases the photocatalytic activity. Among the oxides
based dopants, a narrow band gap (~2.2 eV) vanadium pentoxide (V 2 O 5[r]

TITANATES. Compounds made by heating a mixture of an oxide or carbonate of a metal and titanium dioxide. High dielectric constants, high refractive indices, and ferroelectric properties contribute primar- ily to their commercial importance. Barium titanate crystals, BaTi[r]

Nguồn gốc sinh ra SO2 nhiều nhất là nhà máy điện chạy bằng than, dầu đốt; các lò nấu kim loại; nhà máy sản xuất sulfuric acid; xe chay bằn dầu diesel.
Nguyên lý:
SO2 được hấp thu vào dung dịch potassium tetrachloromercury (K2HgCl4)  phức dichlorosulfitomercurate II (nhằm ổn định SO2)
2KCl + HgCl[r]

and the toxicity occurred internally. C. elegans unselectively ingest bacteria and fi ne particles that are less than 5 m m in size ( Donkin and Dusenbery, 1993 ), and its transparency and small body diam- eter allow for adequate UV penetration ( Coohill et al., 1988; Mills and Hartman, 1998 )[r]

LDL mg dL  TC HDL TG   (1)
Despite the simplicity and lack of cost, the error of determining LDL through that estimation comprises the addition of the analytical errors of the three parameters used in the calculus. In addition, the use of that formula has s[r]

Just as there are many sensing systems available, there are also many designs of friction measuring devices. 10 The unit shown in Figure 3 is attractive because of its simplicity. It is attached to a prime mover which moves horizontally and may be adjusted vertically to load the pin ag[r]

Conclusions
In this article, the effects of various H 2 /O 2 gas composi- tions on the functionalization of MWCNTs using ECR plasma system are studied. The results of Raman spec- troscopy show that the cation treatment is effective in introducing defects to the nanotube sur[r]

6.6. Summary
Irradiation is one from amongst several physical treatments used for collagenous materials stabilization before their utilization in biomaterials. For valve prostheses production, BP and PP may be used. These tissues fixation by chemical substances alo[r]

The fluorination of perlite granules and the immobilization of ZnO nanoparticles on the perlite surface were carried out at the same time by a simple impregnation method to create new highly photocatalytic materials which are easily separated from reaction solutions after treatment. The influence of[r]

A simple, efficient protocol for one pot synthesis of bis(indolyl)methanes from primary alcohols is investigated with N-bromosuccinimde as a catalyst under ultrasound irradiation.