Photocatalytic Properties of Copper Nitride/Molybdenum Disulfide Composite Films Prepared by Magnetron Sputtering

Cu3N/MoS2 composite films were prepared by magnetron sputtering under different preparation parameter, and their photocatalytic properties were investigated. Results showed that the composite films surface was uniform and had no evident cracks. When the sputtering power of MoS2 increased from 2 W to 8 W, the photocatalytic performance of the composite films showed a trend of increasing first and then decreasing. Among these films, the composite films with MoS2 sputtering power of 4 W showed the best photocatalytic degradation performance. The photocatalytic degradation rate of methyl orange at 30 min was 98.3%, because the MoS2 crystal in the films preferentially grew over the Cu3N crystal, thereby affecting the growth of the Cu3N crystal. The crystallinity of the copper nitride also increased. During photocatalytic degradation, the proper amount of MoS2 reduced the band gap of Cu3N, and the photogenerated electron hole pairs were easily separated. Thus, the films produces additional photogenerated electrons and promotes the degradation reaction of the composite films on methyl orange solution.

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An Ultrasound Application for TiO2 Photocatalytic Degradation of Methyl Orange

Materials Science ◽

10.5755/j02.ms.21622 ◽

2021 ◽

Author(s):

Xianzhen Diao ◽

Jin XU ◽

Yufei WANG

Keyword(s):

Methyl Orange ◽

Photocatalytic Degradation ◽

Photocatalytic Performance ◽

Sol Gel ◽

Methyl Orange Solution ◽

X Ray Diffraction ◽

Doping Amount ◽

Nickel Doping ◽

Ultrasound Application ◽

Ultrasound Technology

Nanometer TiO2 photocatalysts were prepared by the sol–gel method. The catalysts were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, ultraviolet-visible spectroscopy, and other techniques. Methyl orange solution was used for the degradation of the organic material and ultrasonic technology was used to determine the photocatalytic performance of the catalysts. The results show that the photocatalytic performance of the Ni-N-TiO2 is clearly improved under ultrasonic conditions. The TiO2 photocatalytic degradation effect is optimal at a catalyst concentration of 0.3 g/L, an initial concentration of the organic matter of 0.03 mmol/L, a nickel-doping amount of 2 mol %, and a nitrogen-doping amount of 15 mol %. The use of ultrasound technology in combination with photocatalysis has a positive effect and results in a TiO2 degradation rate of methyl orange of 95 % after 3 h.

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Structure and photocatalytic properties of TiO2/Cu3N composite films prepared by magnetron sputtering

Materials Today Communications ◽

10.1016/j.mtcomm.2020.101739 ◽

2020 ◽

pp. 101739

Author(s):

Liwen Zhu ◽

Xiu Cao ◽

Jianrong Xiao ◽

Songshan Ma ◽

Shiwo Ta

Keyword(s):

Magnetron Sputtering ◽

Composite Films ◽

Photocatalytic Properties

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An All-Solid-State Electrochromic Device Based on WO3–Nb2O5 Composite Films Prepared by Fast-Alternating Bipolar-Pulsed Reactive Magnetron Sputtering

Coatings ◽

10.3390/coatings9010009 ◽

2018 ◽

Vol 9 (1) ◽

pp. 9 ◽

Cited By ~ 5

Author(s):

Chien-Jen Tang ◽

Ju-Liang He ◽

Cheng-Chung Jaing ◽

Chen-Jui Liang ◽

Ching-Hung Chou ◽

...

Keyword(s):

Solid State ◽

Magnetron Sputtering ◽

Response Times ◽

Composite Films ◽

Optical Modulation ◽

Electrochromic Device ◽

Coloration Efficiency ◽

Sputtering Power ◽

Bleaching Response ◽

Negative Effect

In this study, WO3–Nb2O5 electrochromic films and an ITO/WO3–Nb2O5/Nb2O5/NiVOx/ITO all-solid-state electrochromic device were deposited using fast-alternating bipolar-pulsed magnetron sputtering using tungsten and niobium targets. The influence of different sputtering powers from the niobium target on the refractive index, extinction coefficient, optical modulation, coloration efficiency, reversibility, and durability of the WO3–Nb2O5 films is discussed. The aim of this work is to find the suitable Nb proportion to increase durability and less negative effect in the electrochromic performance of Nb2O5-doped WO3 films. The lifetime of the WO3–Nb2O5 films is 4 times longer than pure WO3 films when the sputtering power of the Nb target is higher than 250 W. The results show that WO3–Nb2O5 composite films used for an all-solid-state electrochromic device can sustain over 3 × 104 repeated coloring and bleaching cycles while the transmission modulations can be kept above 20%. The coloring and bleaching response times are 7.0 and 0.7 s, respectively.

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TiO2 Supported Clinoptilotile: Characterization and Optimization of Operational Parameters for Methyl Orange Removal

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.781-784.2249 ◽

2013 ◽

Vol 781-784 ◽

pp. 2249-2252 ◽

Cited By ~ 4

Author(s):

Sanni O. Saheed ◽

Sekomeng J. Modise ◽

Allworth M. Sipamla

Keyword(s):

Methyl Orange ◽

Photocatalytic Degradation ◽

Kinetic Studies ◽

Methyl Orange Solution ◽

Order Reaction ◽

Operational Parameters ◽

Pseudo First Order Reaction ◽

First Order ◽

Orange Solution ◽

Degradation Of Methyl Orange

Titania dispersed on dealuminated Clinoptilotile (TiO2/HCP) was synthesized and characterized by Scanning Electron Microscope (SEM). Supporting characterization techniques reveals partly dispersion of TiO2 within the cavities of dealuminated Clinoptilotile (HCP) and TiO2 exist as nanoparticles or clusters on the HCP surface ascribed to lower loading of TiO2. The photocatalytic degradation of methyl orange solution was conducted under UV-irradiation in the presence of TiO2/HCP. The photocatalytic degradation of methyl orange in the presence of the photocatalyst was optimized at lower loading of TiO2, at a lower initial dye concentration (30 ppm), calcination temperature of 873K and nitrate ion accelerates degradation activities of methyl orange. Kinetic studies depict the photocatalytic degradation of methyl orange follows the pseudo-first order reaction.

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Study on the Preparation Process of Photocatalysts by the Acidolysis of High Titanium Slag with Hydrochloric Acid

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.662.3 ◽

2014 ◽

Vol 662 ◽

pp. 3-6

Author(s):

Xue Fei Lei ◽

Chen Chen ◽

Xing Li ◽

Xiang Xin Xue ◽

He Yang

Keyword(s):

Reaction Time ◽

Methyl Orange ◽

Hydrochloric Acid ◽

Photocatalytic Degradation ◽

Methyl Orange Solution ◽

Degradation Efficiency ◽

Raw Material ◽

Photocatalytic Efficiency ◽

Titanium Slag ◽

Acid Sludge

The paper preliminary studied the photocatalytic efficiency of the filter residue of the acidolysis of high titanium slag (RAHTS) with hydrochloric acid, and explored the photocatalytic efficiency on the acid methyl orange solution under the mercury lamp irradiation. With RAHTS performing as a raw material to react with hydrochloric acid, and then the substance content, nature and catalytic efficiency of the filter residues were examined by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and photocatalytic reaction apparatus. Through the experimental investigation, the photocatalytic degradation efficiency on the methyl orange of the filter residues increased with the acid-sludge ratio, reaction time, reaction temperature, and the concentration of hydrochloric acid. When the temperature was 100°C, the reaction time was 4 h, the concentration of the hydrochloric acid was 6 mol/L, the acid-sludge ratio was 1, the filter residues showed a best photocatalytic degradation efficiency. Under that experimental condition, the degradation rate was as high as 85.1%.

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Simple synthesis of Cu2O/Na-bentonite composites and their excellent photocatalytic properties in treating methyl orange solution

Ceramics International ◽

10.1016/j.ceramint.2015.12.145 ◽

2016 ◽

Vol 42 (5) ◽

pp. 5979-5984 ◽

Cited By ~ 11

Author(s):

Nai Li ◽

Bujun Yang ◽

Lianchi Xu ◽

Gaojin Xu ◽

Wu Sun ◽

...

Keyword(s):

Methyl Orange ◽

Methyl Orange Solution ◽

Simple Synthesis ◽

Photocatalytic Properties ◽

Orange Solution

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The photocatalytic properties of amorphous TiO2 composite films deposited by magnetron sputtering

Research on Chemical Intermediates ◽

10.1007/s11164-011-0365-0 ◽

2011 ◽

Vol 38 (2) ◽

pp. 487-498 ◽

Cited By ~ 27

Author(s):

Jiamu Huang ◽

Yuanyuan Liu ◽

Lingfeng Lu ◽

Lu Li

Keyword(s):

Magnetron Sputtering ◽

Composite Films ◽

Photocatalytic Properties ◽

Amorphous Tio2

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Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Catalysts ◽

10.3390/catal9020179 ◽

2019 ◽

Vol 9 (2) ◽

pp. 179 ◽

Cited By ~ 4

Author(s):

Julie Murcia ◽

Ángela Cely ◽

Hugo Rojas ◽

María Hidalgo ◽

José Navío

Keyword(s):

Methylene Blue ◽

Methyl Orange ◽

Photocatalytic Degradation ◽

Photocatalytic Performance ◽

Natural Fibers ◽

Textural Properties ◽

Photocatalytic Properties ◽

Real Wastewater ◽

Commercial Tio2

In this study, commercial and lab-prepared TiO2 were modified by fluorination and platinum photodeposition; and the effect of these modifications over the physicochemical and photocatalytic properties of TiO2 was evaluated. It was found that F and Pt addition leads to the modification of the optical and textural properties of TiO2. The materials prepared were tested in the photocatalytic degradation of different organic dyestuffs such as methylene blue (MB) and methyl orange (MO); the degradation of commercial anilines employed in the staining of natural fibers was also evaluated. Photocatalysis was also studied in this work as an eco-friendly treatment of wastewater coming from handicrafts factories. In general it was observed that the effectiveness of the photocatalytic treatment strongly depends on the substrate to be degraded, thus, fluorinated and platinized commercial Titania (Pt-F-P25) showed the best photocatalytic performance in the MB and MO photodegradation and in contrast, in the case of the anilines the highest degradation was obtained over commercial TiO2 fluorinated (F-P25). These results can be explained by differences observed in the structure and in the adsorption of these dyestuffs over the photocatalysts surfaces. F-P25 photocatalyst also demonstrated to be the best material for the treatment of real wastewater coming from handicrafts factories.

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Photocatalytic Activity of Nonprecious Metal WSe2/g-C3N4 Composite Under Visible Light Irradiation

NANO ◽

10.1142/s1793292020500423 ◽

2020 ◽

Vol 15 (04) ◽

pp. 2050042

Author(s):

Jieqiong Wang ◽

Jie Yang ◽

Jian Fang ◽

Yuhang Li ◽

Hongyuan Zhang ◽

...

Keyword(s):

Methyl Orange ◽

Visible Light ◽

Visible Light Irradiation ◽

Degradation Rate ◽

Low Cost ◽

Photogenerated Electron ◽

Methyl Orange Solution ◽

Light Irradiation ◽

New Material ◽

Orange Solution

The WSe2/g-C3N4 (graphite carbon nitride) composite with photocatalytic properties was synthesized using a hydrothermal method. This synthesis pathway can be characterized by being simple, inexpensive and nonpolluting, integrating the concept of green chemistry. The WSe2/g-C3N4 composite could effectively degrade methyl orange solution under visible light irradiation. The decolorization experiment of methyl orange solution shows that the degradation rate of the 30[Formula: see text]wt.% WSe2/g-C3N4 composite can reach 98.7% after 100[Formula: see text]min of illumination, while the degradation rate of pure g-C3N4 was only 87.6% under the same conditions. This can be attributed to the fact that the combination of WSe2 and g-C3N4 nanosheets can increase the number of active binding sites, increasing the rate of charge separation and transport ability, decreasing the recombination rate of the photogenerated electron–hole pairs. Therefore, the WSe2/g-C3N4 composite will have potential development as a new material with low cost, easy synthesis and excellent performance in photocatalytic degradation of water pollution.

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