Influence of surfactant-assisted synthesis and different operational parameters on photocatalytic performance of Cu2FeSnS4 particles

2021 ◽  
Vol 24 ◽  
pp. 101134
Author(s):  
Akmal Abbas ◽  
Keyan Li ◽  
Xinwen Guo ◽  
Aimin Wu ◽  
Chunshan Song ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Operational Parameters ◽  
Surfactant Assisted

Synthesis and Photocatalytic Performance of Hierarchical Porous Titanium Phosphonate Hybrid Materials

2010 ◽  
Vol 132 ◽  
pp. 87-95 ◽  
Author(s):  
Tian Yi Ma ◽  
Tie Zhen Ren ◽  
Zhong Yong Yuan
Keyword(s):  
Photocatalytic Performance ◽  
Porous Titanium ◽  
Bet Surface Area ◽  
Tetrabutyl Titanate ◽  
Diphosphonic Acid ◽  
Organic Hybrid ◽  
Hierarchical Porous ◽  
Hybrid Framework ◽  
Ft Ir ◽  
Surfactant Assisted

A hierarchical meso-/macroporous titanium phosphonate (TPPH) hybrid material was prepared via a simple surfactant-assisted process with the use of the precursor tetrabutyl titanate and 1-hydroxy ethylidene-1,1-diphosphonic acid. The prepared hybrid TPPH presented amorphous phase, exhibiting a hierarchical macroporous structure composed of mesopores with a pore size of 2.0 nm. The BET surface area is 256 m2/g. The hydroxyethylidene-bridged organophosphonate groups were homogeneously incorporated in the network of the hierarchical porous solid, as revealed by FT-IR, MAS NMR, XPS, and TGA measurements. The optical properties and photocatalytic activity of the hierarchical TPPH material were investigated in comparison with those of hierarchical porous titanium phosphate and pure mesoporous titania materials, showing superiority of the inorganic-organic hybrid framework, suggesting promising photocatalysts for wastewater cleanup.

Preparation and characterization of fouling-resistant photocatalytic metal membrane embedded with self-organized TiO2 nano tube

2010 ◽  
Vol 62 (4) ◽  
pp. 963-971 ◽  
Author(s):  
Won-Youl Choi ◽  
No-Suk Park ◽  
Mark R. Wiesner ◽  
Jong-Oh Kim
Keyword(s):  
Membrane Filtration ◽  
Photocatalytic Performance ◽  
Operational Parameters ◽  
Water And Wastewater Treatment ◽  
Anodization Time ◽  
Self Organized ◽  
Bacteria Inactivation ◽  
Water And Wastewater ◽  
Xrd And Tem

A self-organized nano-structured, photocatalytic TiO2 membrane with large surface area of anatase crystallites was successfully fabricated by anodization. The nano-structured anodized TiO2 membrane was characterized using SEM, XRD and TEM techniques and the operational parameters to fabricate such as anodization time and applied anodic potential were also investigated. The anodized TiO2 membrane showed high photocatalytic performance in terms of refractory organics decomposition, bacteria inactivation and membrane permeability, which suggests that problems of conventional photocatalytic treatment and membrane filtration in water and wastewater treatment may be reduced using this combined process.

Sheet-like and truncated-dodecahedron-like AgI structures via a surfactant-assisted protocol and their morphology-dependent photocatalytic performance

2017 ◽  
Vol 19 (1) ◽  
pp. 837-845 ◽  
Author(s):  
Dan Xiao Dan Xiao ◽  
Guangwei Geng ◽  
Penglei Chen ◽  
Tiesheng Li ◽  
Minghua Liu
Keyword(s):  
Photocatalytic Performance ◽  
Photocatalytic Performances ◽  
Surfactant Assisted

Sheet-like and truncated-dodecahedron-like AgI structures are synthesized via a surfactant-assisted method, the latter display boosted photocatalytic performances and excellent recyclability.

Surfactant-assisted hydrothermal synthesis of MoS2 micro-pompon structure with enhanced photocatalytic performance under visible light

Tungsten ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 203-213
Author(s):  
Man-Zhang Xu ◽  
Qiang Li ◽  
Yuan-Yuan Lv ◽  
Zhi-Ming Yuan ◽  
Yu-Xi Guo ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Surfactant Assisted

scholarly journals Tuning the Supramolecular Structures of Metal-Free Porphyrin via Surfactant Assisted Self-Assembly to Enhance Photocatalytic Performance

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1321 ◽  
Author(s):  
Jinrong Lu ◽  
Zihan Li ◽  
Weijia An ◽  
Li Liu ◽  
Wenquan Cui
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Self Assembly ◽  
Photocatalytic Performance ◽  
Ammonium Bromide ◽  
Profound Impact ◽  
Metal Free ◽  
Neutralization Reaction ◽  
Photocatalytic Activities ◽  
Surfactant Assisted

Metal-free porphyrin with good planarity is beneficial to π–π stack interactions, which promotes electron coupling and the separation and transfer of photogenerated carriers. It is necessary to develop metal-free porphyrin-based photocatalysts and exploit the photocatalytic mechanism. Herein, metal–free porphyrin (5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin, TCPP) was self-assembled through an acid-based neutralization reaction and mixing dual-solvents under surfactants to form different aggregates. Morphology structures, optical and optoelectronic properties of the TCPP aggregates were characterized in detail. TCPP self-assemblies showed higher photocatalytic activities for the degradation of phenol under visible light than untreated TCPP powders, and the aggregates of nanorods formed through the acid-based neutralization reaction in the presence of hexadecyl trimethyl ammonium bromide (CTAB) possessed 2.6 times more activity than the nanofiber aggregates formed through mixing dual-solvents. It was proved that self-assembly methods are crucial for controlling the aggregation of porphyrins to form different aggregations, which have a profound impact on the photocatalytic activity.

Electron sources: Past, present, and future

1993 ◽  
Vol 51 ◽  
pp. 764-765
Author(s):  
David C Joy
Keyword(s):  
Glass Tube ◽  
Source Size ◽  
Electron Gun ◽  
Operating Parameters ◽  
Operational Parameters ◽  
Electron Sources ◽  
Difficult Decision ◽  
Probe Size ◽  
Wide Range ◽  
Overall Performance

The electron source is the most important component of the Scanning electron microscope (SEM) since it is this which will determine the overall performance of the machine. The gun performance can be described in terms of quantities such as its brightness, its source size, its energy spread, and its stability and, depending on the chosen application, any of these factors may be the most significant one. The task of the electron gun in an SEM is, in fact, particularly difficult because of the very wide range of operational parameters that may be required e.g a variation in probe size of from a few angstroms to a few microns, and a probe current which may go from less than a pico-amp to more than a microamp. This wide range of operating parameters makes the choice of the optimum source for scanning microscopy a difficult decision.Historically, the first step up from the sealed glass tube ‘cathode ray generator’ was the simple, diode, tungsten thermionic emitter.

Highly efficient and selective photocatalytic CO2 to CO conversion in aqueous solution

2020 ◽  
Vol 56 (27) ◽  
pp. 3851-3854 ◽  
Author(s):  
Xiaomin Chai ◽  
Hai-Hua Huang ◽  
Huiping Liu ◽  
Zhuofeng Ke ◽  
Wen-Wen Yong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Performance ◽  
Aqueous Media ◽  
Highly Efficient ◽  
Co Conversion

A Co-based complex displayed the highest photocatalytic performance for CO2 to CO conversion in aqueous media.

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