Synthesis and characterization of CdS@ZnO nanoribbon@quantum dot and their enhanced visible-light-driven photocatalytic activities

2020 ◽  
Vol 34 (10) ◽  
pp. 2050088
Author(s):  
Qiang-Ye Gao ◽  
Yong-Dong Xie ◽  
Bai-Chun Zhan ◽  
Xing-Zhen Xu
Keyword(s):  
Thermal Decomposition ◽  
Quantum Dot ◽  
Visible Light ◽  
Decomposition Temperature ◽  
Ethanol Solution ◽  
Photoelectric Device ◽  
Photocatalytic Activities ◽  
Visible Light Driven ◽  
Cds Nanobelts

CdS/ZnO nanoribbon/quantum dot was prepared using thermal decomposition method. Size and distribution of ZnO quantum dots on CdS nanobelt were controlled by concentrations of zinc acetate ethanol solution and thermal decomposition temperature. The structure and optical properties of CdS nanobelts and CdS/ZnO heterostructures are studied by XRD, TEM, PL and Raman scattering and UV–Vis absorption spectra. The photocatalytic performances of CdS nanobelts and CdS/ZnO heterostructures are tested by photocatalytic degradation of RhB aqueous solution under visible light irradiation. Compared with that (83.57%) of CdS nanobelts, the degradation rate (88.66%) of RhB using CdS/ZnO heterostructures as catalyst is significantly improved, which suggests better development prospect in photocatalytic technology and photoelectric device.

Carbon quantum dot decorated hollow In2S3 microspheres with efficient visible-light-driven photocatalytic activities

RSC Advances ◽  
2016 ◽  
Vol 6 (46) ◽  
pp. 40137-40146 ◽  
Author(s):  
Changyou Huang ◽  
Yuanzhi Hong ◽  
Xu Yan ◽  
Lisong Xiao ◽  
Kai Huang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Facile Hydrothermal Method ◽  
Carbon Quantum Dot ◽  
Photocatalytic Activities ◽  
Visible Light Driven

Carbon quantum dot (CQDs) decorated hollow In2S3 microspheres were firstly synthesized by a facile hydrothermal method.

Synthesis and characterization of visible light-driven W-doped Bi 2 MoO 6 photocatalyst and its photocatalytic activities

2017 ◽  
Vol 194 ◽  
pp. 114-117 ◽  
Author(s):  
Anukorn Phuruangrat ◽  
Phattranit Dumrongrojthanath ◽  
Somchai Thongtem ◽  
Titipun Thongtem
Keyword(s):  
Visible Light ◽  
Synthesis And Characterization ◽  
Photocatalytic Activities ◽  
Visible Light Driven

scholarly journals Visible-Light Driven Photocatalytic Degradation of Pirimicarb by Pt-Doped AgInS2 Nanoparticles

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 857
Author(s):  
Hweiyan Tsai ◽  
Janah Shaya ◽  
Siriluck Tesana ◽  
Vladimir B. Golovko ◽  
Syuan-Yun Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Active Species ◽  
Optimal Dosage ◽  
Catalytic Activities ◽  
Photodegradation Rate ◽  
Photocatalytic Activities ◽  
Visible Light Driven ◽  
Prospective Application ◽  
Acidic Conditions

This study describes the synthesis and characterization of Pt-doped AgInS2 nanoparticles and reports their prospective application as visible-light catalysts for photodegradation of frequently used pirimicarb insecticides, which pose serious health and environmental concerns. The nanomaterials were characterized by XRD, SEM, TEM, XPS, photoluminescence (PL), and UV–vis diffuse reflectance spectra (DRS). The presented photocatalytic method for water treatment from pirimicarb has the advantages of using visible light source without any costly additive such as H2O2 needed in other employed methods. The Pt-doped AgInS2 exhibited higher photocatalytic activities for pirimicarb degradation than undoped AgInS2. The 1.0 wt% Pt/AgInS2 photocatalyst exhibited the highest photodegradation rate, showing enhancement of 56% in comparison to the pure AgInS2 photocatalyst. The photodegradation rate was found to increase with increasing the catalyst dosage until reaching the optimal dosage of 1.0 g L−1. The pirimicarb degradation was significantly more efficient under acidic conditions, and the rates drastically dropped upon increasing the pH. The photocatalytic mechanism of Pt/AgInS2 composites and the main active species involved in the process were investigated. The mechanism of pirimicarb degradation was proposed via two different pathways, N-dealkylation and decarbamoylation. Lastly, the photocatalysts demonstrated remarkable stability and were reusable in three successive catalytic tests without compromising catalytic activities. The Pt/AgInS2 photocatalyst also exhibited efficiency and feasibility in pirimicarb removal from environmental lake and river water samples.

scholarly journals Enhanced visible-light-driven photocatalytic activities of 0D/1D heterojunction carbon quantum dot modified CdS nanowires

2018 ◽  
Vol 39 (4) ◽  
pp. 841-848 ◽  
Author(s):  
Zhiwei Chen ◽  
Chang Feng ◽  
Weibing Li ◽  
Zhiyong Sun ◽  
Jian Hou ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Visible Light ◽  
Carbon Quantum Dot ◽  
Photocatalytic Activities ◽  
Visible Light Driven ◽  
Cds Nanowires

Solvothermal synthesis and visible light-driven photocatalytic degradation for tetracycline of Fe-doped SrTiO3

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47615-47624 ◽  
Author(s):  
Ping Li ◽  
Chunbo Liu ◽  
Guoling Wu ◽  
Yang Heng ◽  
Shuang Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Solvothermal Synthesis ◽  
Solvothermal Method ◽  
Light Irradiation ◽  
Photocatalytic Activities ◽  
Visible Light Driven ◽  
Facile Solvothermal Method

In this paper, Fe-doped SrTiO3 (FSTO) photocatalysts were successfully prepared via a facile solvothermal method, and their photocatalytic activities for degrading tetracycline (TC) under visible light irradiation were examined.

Enhanced visible-light-driven photocatalytic activities of Bi2Fe4O9/g-C3N4 composite photocatalysts

2018 ◽  
Vol 104 ◽  
pp. 104-111 ◽  
Author(s):  
Geming Wang ◽  
Shutong Liu ◽  
Tiancheng He ◽  
Xuan Liu ◽  
Quanrong Deng ◽  
...  
Keyword(s):  
Visible Light ◽  
Composite Photocatalysts ◽  
Photocatalytic Activities ◽  
Visible Light Driven

scholarly journals Silver Orthophosphate Immobilized on Flaky Layered Double Hydroxides as the Visible-Light-Driven Photocatalysts

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Xianlu Cui ◽  
Yaogang Li ◽  
Qinghong Zhang ◽  
Hongzhi Wang
Keyword(s):  
Visible Light ◽  
Diffuse Reflectance Spectroscopy ◽  
Diffraction Field ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Photocatalytic Activities ◽  
Visible Light Driven ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Acid Red G

Flaky layered double hydroxide (FLDH) was prepared by the reconstruction of its oxide in alkali solution. The composites with FLDH/Ag3PO4mass ratios at 1.6 : 1 and 3 : 1 were fabricated by the coprecipitation method. The powders were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscope, and UV-vis diffuse reflectance spectroscopy. The results indicated that the well-distributed Ag3PO4in a fine crystallite size was formed on the surface of FLDH. The photocatalytic activities of the Ag3PO4immobilized on FLDH were significantly enhanced for the degradation of acid red G under visible light irradiation compared to bare Ag3PO4. The composite with the FLDH/Ag3PO4mass ratio of 3 : 1 showed a higher photocatalytic efficiency.

scholarly journals Synthesis and characterization of Z-scheme heterostructure CoWO4/g-C3N4 as a visible-light photocatalyst for removal of organic pollutant

2021 ◽  
Vol 10 (2) ◽  
pp. 59-63
Author(s):  
Hai Pham Viet ◽  
Anh Dao Thi Ngoc ◽  
Viet Nguyen Minh ◽  
Ha Tran Thi Viet ◽  
Dang Do Van ◽  
...  
Keyword(s):  
Visible Light ◽  
Rhodamine B ◽  
High Performance ◽  
Organic Pollutant ◽  
Photogenerated Electron ◽  
Morphological Properties ◽  
Electron Hole ◽  
Visible Light Photocatalyst ◽  
Photocatalytic Activities

In this study, direct Z–scheme heterostructure CoWO4/g-C3N4 was synthesized by a facile hydrothermal method. The structural, morphological properties of the prepared samples were characterised by XRD, SEM, UV–Vis and PL measurements. The as-obtained heterostructure CoWO4/g-C3N4 exhibited enhanced photocatalytic activities toward the degradation of Rhodamine B under visible light irradiation with 92% Rhodamine B removal after 80 minutes irritation, which exceeded pristine g-C3N4 and CoWO4. The enhanced photocatalytic performance ascribed to interfacial contact between g-C3N4 and CoWO4, thus further inhibiting the recombination of photogenerated electron/hole pairs. It is anticipated that the construction of Z–scheme heterostructure CoWO4/g-C3N4 is an effective strategy to develop high-performance photocatalysts for the degradation of organic pollutants in water.

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