Facile fabrication of BiOCl nanoplates with high exposure {001} facets for efficient photocatalytic degradation of nitro explosives

2021 ◽  
Author(s):  
Jing Yan ◽  
Bo Jin ◽  
Ping Zhao ◽  
Rufang Peng
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
High Exposure ◽  
Nitro Explosives ◽  
Excellent Photocatalytic Activity ◽  
Facile Fabrication

BiOCl nanoplates with highly exposed {001} facets displayed excellent photocatalytic activity on the degradation of nitro explosives.

scholarly journals Hydrothermal synthesis of cotton-based BiVO4/Ag composite for photocatalytic degradation of C.I. Reactive Black 5

RSC Advances ◽  
2020 ◽  
Vol 10 (64) ◽  
pp. 39295-39303
Author(s):  
Jiangang Qu ◽  
Jiaqi Qian ◽  
Mengtao Wu ◽  
Qinghui Mao ◽  
Min Li
Keyword(s):  
Composite Material ◽  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Photocatalytic Degradation ◽  
Reactive Black 5 ◽  
Photodegradation Mechanism ◽  
Excellent Photocatalytic Activity

BiVO4/Ag/cotton-K composite material exhibited excellent photocatalytic activity and recyclability, and the photodegradation mechanism of RB5 by BiVO4/Ag/cotton-K was also proposed.

In situ anion exchange synthesis of In2S3/In(OH)3 heterostructures for efficient photocatalytic degradation of MO under solar light

2017 ◽  
Vol 41 (8) ◽  
pp. 3134-3142 ◽  
Author(s):  
Zheng Qiao ◽  
Tingjiang Yan ◽  
Wenjuan Li ◽  
Baibiao Huang
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Exchange Reaction ◽  
Anion Exchange ◽  
Hydrothermal Process ◽  
Solar Light ◽  
Excellent Photocatalytic Activity ◽  
Anion Exchange Reaction

In2S3/In(OH)3 heterostructures which were synthesized via an in situ anion exchange reaction and the hydrothermal process displayed excellent photocatalytic activity compared to pure components and the reported In2S3/In2O3.

scholarly journals Facile Synthesis of “Boron-Doped” Carbon Dots and Their Application in Visible-Light-Driven Photocatalytic Degradation of Organic Dyes

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1560 ◽  
Author(s):  
Zhili Peng ◽  
Yiqun Zhou ◽  
Chunyu Ji ◽  
Joel Pardo ◽  
Keenan J. Mintz ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Carbon Dots ◽  
Organic Dyes ◽  
Dye Degradation ◽  
Average Diameter ◽  
Spherical Particles ◽  
Promising Alternative ◽  
Excellent Photocatalytic Activity ◽  
Doped Carbon Dots

Carbon dots (C-dots) were facilely fabricated via a hydrothermal method and fully characterized. Our study shows that the as-synthesized C-dots are nontoxic, negatively charged spherical particles (average diameter 4.7 nm) with excellent water dispersion ability. Furthermore, the C-dots have a rich presence of surface functionalities such as hydroxyls and carboxyls as well as amines. The significance of the C-dots as highly efficient photocatalysts for rhodamine B (RhB) and methylene blue (MB) degradation was explored. The C-dots demonstrate excellent photocatalytic activity, achieving 100% of RhB and MB degradation within 170 min. The degradation rate constants for RhB and MB were 1.8 × 10−2 and 2.4 × 10−2 min−1, respectively. The photocatalytic degradation performances of the C-dots are comparable to those metal-based photocatalysts and generally better than previously reported C-dots photocatalysts. Collectively considering the excellent photocatalytic activity toward organic dye degradation, as well as the fact that they are facilely synthesized with no need of further doping, compositing, and tedious purification and separation, the C-dots fabricated in this work are demonstrated to be a promising alternative for pollutant degradation and environment protection.

scholarly journals One-Dimensional Nanostructured TiO2for Photocatalytic Degradation of Organic Pollutants in Wastewater

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Ting Feng ◽  
Gen Sheng Feng ◽  
Lei Yan ◽  
Jia Hong Pan
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Photocatalytic Oxidation ◽  
Sol Gel ◽  
Chemical Vapor ◽  
Inorganic Element ◽  
One Dimensional ◽  
Practical Applications ◽  
Excellent Photocatalytic Activity

The present paper reviews the progress in the synthesis of one-dimensional (1D) TiO2nanostructures and their environmental applications in the removal of organic pollutants. According to the shape, 1D TiO2nanostructures can be divided into nanorods, nanotubes, nanowires/nanofibers, and nanobelts. Each of them can be synthesized via different technologies, such as sol-gel template method, chemical vapor deposition, and hydrothermal method. These methods are discussed in this paper, and the recent development of the synthesis technologies is also presented. Furthermore, the organic pollutants, degradation using the synthesized 1D TiO2nanostructures is studied as an important application of photocatalytic oxidation (PCO). The 1D nanostructured TiO2exhibited excellent photocatalytic activity in a PCO process, and the mechanism of photocatalytic degradation of organic pollutants is also discussed. Moreover, the modification of 1D TiO2nanostructures using metal ions, metal oxide, or inorganic element can further enhance the photocatalytic activity of the photocatalyst. This phenomenon can be explained by the suppression of e−-h+pairs recombination rate, increased specific surface area, and reduction of band gap. In addition, 1D nanostructured TiO2can be further constructed as a film or membrane, which may extend its practical applications.

scholarly journals Fast photocatalytic degradation of dyes using low-power laser-fabricated Cu2O–Cu nanocomposites

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 20277-20286 ◽  
Author(s):  
Shengling Li ◽  
Qingxia Lin ◽  
Xianhua Liu ◽  
Li Yang ◽  
Jie Ding ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Low Power ◽  
Photocatalytic Degradation ◽  
Power Laser ◽  
Facile Synthesis ◽  
Degradation Of Dyes ◽  
Excellent Photocatalytic Activity

Facile synthesis of Cu2O–Cu nanocomposites by using a low-power CO2laser was realized, and the fabricated nanomaterials showed excellent photocatalytic activity for the degradation of various dyes.

scholarly journals Fabrication of Ag3PO4/GO/NiFe2O4 composites with highly efficient and stable visible-light-driven photocatalytic degradation of rhodamine B

RSC Advances ◽  
2018 ◽  
Vol 8 (49) ◽  
pp. 28179-28188 ◽  
Author(s):  
Tianhong Zhou ◽  
Guozhen Zhang ◽  
Hao Yang ◽  
Hongwei Zhang ◽  
Ruini Suo ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ion Exchange ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Deposition Method ◽  
Magnetic Composites ◽  
Highly Efficient ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven

Effective visible-light-driven Ag3PO4/GO/NiFe2O4Z-scheme magnetic composites were successfully fabricated by a simple ion-exchange deposition method. The composites exhibited excellent photocatalytic activity and stability for RhB degradation.

Photocatalytic degradation of methylene blue from aqueous solutions using nanopillars-TiO2 thin films: Batch reactor studies

2018 ◽  
Vol 18 (3) ◽  
pp. 81-91 ◽  
Author(s):  
C. Lalhriatpuia
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Organic Carbon ◽  
Photocatalytic Degradation ◽  
Batch Reactor ◽  
Tio2 Thin Films ◽  
Initial Concentration ◽  
Bet Specific Surface Area ◽  
Interfering Ions

Nanopillars-TiO2 thin films was obtained on a borosilicate glass substrate with (S1) and without (S2) polyethylene glycol as template. The photocatalytic behaviour of S1 and S2 thin films was assessed inthe degradation of methylene blue (MB) dye from aqueous solution under batch reactor operations. The thin films were characterized by the SEM, XRD, FTIR and AFM analytical methods. BET specific surface area and pore sizes were also obtained. The XRD data confirmed that the TiO2 particles are in its anatase mineral phase. The SEM and AFM images indicated the catalyst is composed with nanosized pillars of TiO2, evenly distributed on the surface of the substrate. The BET specific surface area and pore sizes of S1 and S2 catalyst were found to be 5.217 and 1.420 m2/g and 7.77 and 4.16 nm respectively. The photocatalytic degradation of MB was well studied at wide range of physico-chemical parameters. The effect of solution pH (pH 4.0 to 10.0) and MB initial concentration (1.0 to 10.0 mg/L) was extensively studied and the effect of several interfering ions, i.e., cadmium nitrate, copper sulfate, zinc chloride, sodium chloride, sodium nitrate, sodium nitrite, glycine, oxalic acid and EDTA in the photocatalytic degradation of MB was demonstrated. The maximum percent removal of MB was observed at pH 8.0 beyond which it started decreasing and a low initial concentration of the pollutant highly favoured the photocatalytic degradation using thin films and the presence of several interfering ions diminished the photocatalytic activity of thin films to some extent. The overall photocatalytic activity was in the order: S2 > S1 > UV. The photocatalytic degradation of MB was followed the pseudo-first-order rate kinetics. The mineralization of MB was studied with total organic carbon measurement using the TOC (total organic carbon) analysis.

Use of Nanopillars-TiO2 Thin Films in the Photocatalytic Degradation of Bromophenol Blue from Aqueous Solution

2018 ◽  
Vol 6 (1) ◽  
pp. 22-30
Author(s):  
C. Lalhriatpuia ◽  
◽  
Thanhming liana ◽  
K. Vanlaldinpuia
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Batch Reactor ◽  
Bromophenol Blue ◽  
Tio2 Thin Films ◽  
Initial Concentration ◽  
Bet Specific Surface Area ◽  
Interfering Ions

The photocatalytic activity of Nanopillars-TiO2 thin films was assessed in the degradation of Bromophenol blue (BPB) dye from aqueous solution under batch reactor operations. The thin films were characterized by the XRD, SEM and AFM analytical methods. BET specific surface area and pore sizes were also obtained. The XRD data showed anatase phase of TiO2 particles with average particle size of 25.4 and 21.9 nm, for S1 and S2 catalysts respectively. The SEM and AFM images indicated the catalyst composed with Nanosized pillars of TiO2, evenly distributed on the surface of the substrate. The average height of the pillars was found to be 180 and 40 nm respectively for the S1 and S2 catalyst. The BET specific surface area and pore sizes of S1 and S2 catalyst were found to be 5.217 and 1.420 m2/g and 7.77 and 4.16 nm respectively. The photocatalytic degradation of BPB using the UV light was studied at wide range of physico-chemical parametric studies to determine the mechanism of degradation as well as the practical applicability of the technique. The batch reactor operations were conducted at varied pH (pH 4.0 to 10.0), BPB initial concentration (1.0 to 20.0 mg/L) and presence of several interfering ions, i.e., cadmium nitrate, copper sulfate, zinc chloride, sodium chloride, sodium nitrate, sodium nitrite, glycine, oxalic acid and EDTA in the photocatalytic degradation of BPB. The maximum percent removal of BPB was observed at pH 6.0 and a low initial concentration of the pollutant highly favours the photocatalytic degradation using thin films. The presence of several interfering ions suppressed the photocatalytic activity of thin films to some extent. The time dependence photocatalytic degradation of BPB was demonstrated with the pseudo-first-order rate kinetics. Study was further extended with total organic carbon measurement using the TOC (Total Organic Carbon) analysis. This demonstrated an apparent mineralization of BPB from aqueous solutions.

scholarly journals Sulfur-doped CoFe2O4 nanopowders for enhanced visible-light photocatalytic activity and magnetic properties

RSC Advances ◽  
2017 ◽  
Vol 7 (80) ◽  
pp. 50546-50554 ◽  
Author(s):  
Rong Li ◽  
Chencen Sun ◽  
Jia Liu ◽  
Qiang Zhen
Keyword(s):  
Aqueous Solution ◽  
Magnetic Properties ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Photocatalytic Activity ◽  
Magnetic Recovery ◽  
Visible Light Photocatalytic

Magnetic recovery S-CoFe2O4 nanopowders showed excellent visible photocatalytic degradation of oxytetracycline and recycling performances in aqueous solution.

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