Hemin Covalently Functionalized Carbon Nanobranch with Enzyme‐Like and Photocatalytic Activities for Synergistic Dye Degradation and Antibacterial Therapy

2021 ◽  
pp. 2100103
Author(s):  
Chengjie Xu ◽  
Li Zhou ◽  
Sidi Zheng ◽  
Deshuai Yu ◽  
Yonghua Tang ◽  
...  
Keyword(s):  
Antibacterial Therapy ◽  
Dye Degradation ◽  
Photocatalytic Activities

Dihydroxo-bridged diuranyl(vi) complexes with 2-((2-(6-chloropyridazin-3-yl)hydrazono)methyl)-4-R-phenols: structural insights and visible light driven photocatalytic activities

2019 ◽  
Vol 43 (2) ◽  
pp. 970-978 ◽  
Author(s):  
Sabari Ghosh ◽  
Ankit Kumar Srivastava ◽  
Samudranil Pal
Keyword(s):  
Visible Light ◽  
Dye Degradation ◽  
Organic Dye ◽  
Photocatalytic Activities ◽  
Visible Light Driven ◽  
Organic Dye Degradation ◽  
Structural Insights

Complexes of the {(UO2)2(μ-OH)2}2+ core with N,N,O-donor 2-((2-(6-chloropyridazin-3-yl)hydrazono)methyl)-4-R-phenolates and their visible light-induced photocatalytic organic dye degradation abilities are reported.

scholarly journals Facile Preparation of CNT/Ag2S Nanocomposites with Improved Visible and NIR Light Photocatalytic Degradation Activity and Their Catalytic Mechanism

Micromachines ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 503 ◽  
Author(s):  
Lijing Di ◽  
Tao Xian ◽  
Xiaofeng Sun ◽  
Hongqin Li ◽  
Yongjie Zhou ◽  
...  
Keyword(s):  
Catalytic Mechanism ◽  
Dye Degradation ◽  
Average Particle Size ◽  
Hybrid Nanocomposites ◽  
Light Irradiation ◽  
Precipitation Method ◽  
Average Particle ◽  
Nir Light ◽  
Photocatalytic Activities ◽  
Ag2s Nanoparticles

In this work, a series of carbon nanotubes (CNT)/Ag2S hybrid nanocomposites were successfully prepared by a facile precipitation method. Transmission electron microscope (TEM) observation indicates that Ag2S nanoparticles with an average particle size of ~25 nm are uniformly anchored on the surface of CNT. The photocatalytic activities of the CNT/Ag2S nanocomposites were investigated toward the degradation of rhodamine B (RhB) under visible and near-infrared (NIR) light irradiation. It is shown that the nanocomposites exhibit obviously enhanced visible and NIR light photocatalytic activities compared with bare Ag2S nanoparticles. Moreover, the recycling photocatalytic experiment demonstrates that the CNT/Ag2S nanocomposites possess excellent photocatalytic stability. The photoelectrochemical and photoluminescence measurements reveal the efficient separation of photogenerated charges in the CNT/Ag2S nanocomposites. This is the dominant reason behind the improvement of the photocatalytic activity. Based on active species trapping experiments, the possible photocatalytic mechanism of CNT/Ag2S nanocomposites for dye degradation under visible and NIR light irradiation was proposed.

Synthesis of Hybrid Cu-Doped TiO2 Photocatalyst for Dye Removal

2019 ◽  
Vol 797 ◽  
pp. 84-91 ◽  
Author(s):  
Ying Pei Lim ◽  
Ying Chin Lim
Keyword(s):  
Incubation Time ◽  
Incubation Temperature ◽  
Dye Degradation ◽  
Uv Light ◽  
Light Irradiation ◽  
Impregnation Method ◽  
Wet Impregnation ◽  
Uv Light Irradiation ◽  
Photocatalytic Activities ◽  
Wet Impregnation Method

Titanium dioxide (TiO2) photocatalyst is one of the promising semiconductors used for the degradation of commercial dyes. However, it has to be doped with other metals to increase its efficiency, reactivity and stability. This study was carried out to synthesize hybrid Cu-doped TiO2 using wet impregnation method by varying the loading of copper precursor (0.3-1.0 wt%), incubation temperature (50-90°C) and incubation time (1-24 h). The synthesized hybrid Cu-doped TiO2 was characterized using XRD, EDX, FESEM and BET to obtain the structural, elemental, and surface morphological information. The photocatalytic activities of the synthesized Cu-doped TiO2 were investigated for the degradation of methyl orange (MO) under UV-light irradiation. The results revealed that the optimum Cu loading was at 0.5wt% Cu with incubation temperature of 50°C and 2h incubation time. The hybrid Cu-doped TiO2 showed an excellent dye degradation efficiency ranging from 40-82% under UV-light irradiation.

ZnS NANOFLOWERS ON GRAPHENE FOR USE AS A HIGH-PERFORMANCE PHOTOCATALYST

NANO ◽  
2014 ◽  
Vol 09 (08) ◽  
pp. 1450097 ◽  
Author(s):  
ZENG BIN ◽  
LONG HUI
Keyword(s):  
Electron Microscopy ◽  
Photoelectron Spectroscopy ◽  
High Performance ◽  
Dye Degradation ◽  
Uv Light ◽  
Xps Spectra ◽  
X Ray ◽  
Transmission Electron ◽  
Photocatalytic Activities ◽  
Potential Applications

The nanocomposites of graphene loaded– ZnS nanoflowers (GR– ZnS ) had been successfully prepared. Materials were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectra (FTIR), photoluminescence (PL) and X-ray photoelectron spectroscopy (XPS) spectra. A possible formation mechanism of this architecture was proposed. The experimental results revealed that these nanoflowers exhibited excellent UV-light photocatalytic activities for pollutant methyl orange (MO) dye degradation. These new nanostructures were expected to show considerable potential applications in the water treatment.

Isopolymolybdate-based inorganic–organic hybrid compounds constructed by multidentate N-donor ligands: syntheses, structures and properties

2019 ◽  
Vol 48 (17) ◽  
pp. 5541-5550 ◽  
Author(s):  
Haiyang Guo ◽  
Chunhua Gong ◽  
Xianghua Zeng ◽  
Hao Xu ◽  
Qingdao Zeng ◽  
...  
Keyword(s):  
Dye Degradation ◽  
Donor Ligands ◽  
Organic Hybrid ◽  
Hybrid Compounds ◽  
Structures And Properties ◽  
Photocatalytic Activities

Five isopolymolybdate-based hybrid compounds were achieved and their photocatalytic activities for dye degradation were explored.

Preparation and Photocatalytic Activities of TiO2-rGO Nanocomposite Catalysts for MB Dye Degradation over Sunlight Irradiation

2018 ◽  
Vol 936 ◽  
pp. 47-52 ◽  
Author(s):  
Chaval Sriwong ◽  
Kittisak Choojun ◽  
Worapol Tejangkura ◽  
Warot Prasanseang
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Transfer Rate ◽  
Acidic Solution ◽  
Dye Degradation ◽  
Sunlight Irradiation ◽  
Charge Transfer Rate ◽  
Reduced Graphene ◽  
Photocatalytic Activities ◽  
Nanocomposite Catalysts

This research aims to investigate photocatalytic activities of titanium dioxide (TiO2) incorporated with reduced graphene oxide (rGO) nanocomposite catalysts. These TiO2-rGO photocatalysts were easily prepared through a direct-mixing of TiO2powder suspended in acidic solution under the different amounts of rGO loading (0.25, 0.50, 0.75 and 1.00 wt%). Then, the obtained TiO2-rGO samples were characterized by a several techniques. The results demonstrated that the crystalline phases of all samples are corresponding to pristine TiO2, whereas the characteristic peaks of rGO in the TiO2-rGO nanocomposites could be observed and also well-confirmed by Raman spectroscopy. TEM results showed that the TiO2nanoparticles were well-combined with rGO nanosheets. Moreover, the photocatalytic activities of all TiO2-rGO photocatalyst samples were evaluated by photodegrading of methylene blue (MB) dye solution under natural sunlight irradiation. The results revealed that all TiO2-rGO nanocatalysts exhibited much higher activity than those of the bare TiO2. The improved photocatalytic activity can be attributed to the presence of rGO nanosheets, leading to the decrease of electron (e-) - hole (h+) recombination of TiO2catalyst, increasing charge transfer rate of electrons and surface-adsorbed amount of MB molecules which enhances the photocatalytic activity.

Porous carbon nitride nanosheets for enhanced photocatalytic activities

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 14984-14990 ◽  
Author(s):  
Jindui Hong ◽  
Shengming Yin ◽  
Yunxiang Pan ◽  
Jianyu Han ◽  
Tianhua Zhou ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Nitride ◽  
Dye Degradation ◽  
Simple Liquid ◽  
Liquid Exfoliation ◽  
Photocatalytic Activities ◽  
Carbon Nitride Nanosheets ◽  
First Time ◽  
Liquid Exfoliation Method ◽  
Probe Sonication

Porous carbon nitride nanosheets (PCNs) have been prepared for the first time by a simple liquid exfoliation method via probe sonication, which showing enhanced photocatalytic activities toward dye degradation and H2 evolution.

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