Manifestation of an Enhanced Photoreduction of CO2 to CO over the In Situ Synthesized rGO–Covalent Organic Framework under Visible Light Irradiation

2021 ◽  
Author(s):  
Vishnu Nair Gopalakrishnan ◽  
Duc-Trung Nguyen ◽  
Jorge Becerra ◽  
Mohan Sakar ◽  
Jason M. E. Ahad ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Covalent Organic Framework ◽  
Organic Framework

Covalent organic frameworks as metal-free heterogeneous photocatalysts for organic transformations

2017 ◽  
Vol 5 (44) ◽  
pp. 22933-22938 ◽  
Author(s):  
Yongfeng Zhi ◽  
Ziping Li ◽  
Xiao Feng ◽  
Hong Xia ◽  
Yumin Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Organic Transformations ◽  
Metal Free ◽  
Covalent Organic Framework ◽  
Photocatalytic Performances ◽  
Organic Framework

A robust two-dimensional covalent organic framework (COF-JLU5), which exhibits excellent heterogeneous photocatalytic performances for oxidative C–H functionalizations under visible-light irradiation using O2as a green oxygen source, is reported.

Highly dispersed Ru nanoparticles on a bipyridine-linked covalent organic framework for efficient photocatalytic CO2 reduction

2021 ◽  
Author(s):  
Ziling Liu ◽  
Yaqi Huang ◽  
Shuqing Chang ◽  
Xiaoli Zhu ◽  
Yanghe Fu ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Co2 Reduction ◽  
Light Irradiation ◽  
Covalent Organic Framework ◽  
Ru Nanoparticles ◽  
Highly Dispersed ◽  
Organic Framework

Highly dispersed Ru nanoparticles are confined in a photosensitizing bipyridine-linked covalent organic framework to construct Ru@TpBpy composites, exhibiting significantly enhanced activities for CO2 reduction under visible-light irradiation.

A metal-free covalent organic framework as photocatalyst for CO2 reduction at low CO2 concentration in gas-solid system

2021 ◽  
Author(s):  
Jin-Xian Cui ◽  
Lu-Jie Wang ◽  
Feng Liu ◽  
Bo Meng ◽  
Zi-Yan Zhou ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Co2 Reduction ◽  
Co2 Concentration ◽  
Light Irradiation ◽  
Metal Free ◽  
Covalent Organic Framework ◽  
Low Co2 ◽  
Solid System ◽  
Organic Framework

A β-ketoenamine-based COF is used as photocatalyst to convert CO2 and H2O into CO and O2 under visible-light irradiation without additional photosensitizers and sacrificial agents in gas-solid system. When CO2...

Donor–acceptor covalent organic framework/g-C3N4 hybrids for efficient visible light photocatalytic H2 production

2021 ◽  
Author(s):  
Chenxiang Lin ◽  
Chaozheng Han ◽  
Lei Gong ◽  
Xin Chen ◽  
Jinxia Deng ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
H2 Production ◽  
Light Irradiation ◽  
Evolution Rate ◽  
Covalent Organic Framework ◽  
Donor Acceptor ◽  
Visible Light Photocatalytic ◽  
Organic Framework

A donor–acceptor type covalent organic framework (COF) was used to construct TBTA/g-C3N4 hybrids for photocatalytic H2 evolution. Under visible light irradiation, the hybrids exhibited an optimized H2 evolution rate of 11.73 mmol g−1 h−1 without Pt.

Construction of Z-Scheme Bi3TaO7/Zn0.5Cd0.5S composites with high-efficiency for levofloxacin degradation under visible light irradiation

2021 ◽  
Author(s):  
Jingjing Xu ◽  
Yang liu ◽  
xueping li ◽  
Mindong Chen
Keyword(s):  
Visible Light ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
High Efficiency ◽  
Light Irradiation ◽  
In Situ Growth ◽  
Composite Photocatalysts ◽  
Photocatalytic Activities

Direct Z-scheme Bi3TaO7/Zn0.5Cd0.5S composite photocatalysts were successfully prepared via an in-situ growth hydrothermal method. The photocatalytic activities of composites were investigated by the degradation of levofloxacin under visible light. And...

scholarly journals Photocatalytic Degradation of Methylene Blue and Methyl Orange by Y-PTC Metal-Organic Framework

2021 ◽  
Vol 7 (2) ◽  
pp. 129-141
Author(s):  
Adawiah Adawiah ◽  
Muhammad Derry Luthfi Yudhi ◽  
Agustino Zulys
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Metal Organic Framework ◽  
Light Irradiation ◽  
Bandgap Energy ◽  
Metal Organic ◽  
Organic Framework

The yttrium based metal-organic framework (MOF) Y-PTC was synthesized by the solvothermal method using perylene as the linker and yttrium as metal ion. This study aims to assess the photocatalytic activity of yttrium-perylenetetracarboxylate (Y-PTC) metal-organic framework (MOF) toward methylene blue and methyl orange under visible light irradiation. The results of the FTIR analysis showed that Y-PTC MOF had a different structure and composition from its precursor (Na4PTC). The Y-PTC MOF has a bandgap energy value of 2.20 eV with a surface area of 47.7487 m2/g. The SEM-EDS analysis showed an elemental composition of yttrium, carbon, and oxygen, were 6.9%, 72.1% and 20.7%, respectively. Furthermore, Y-PTC MOF was able to adsorb dyes at the optimum by 78.10% and 35.57% toward methylene blue (MB) and methyl orange (MO) at the dispersion period of 60 mins. Y-PTC MOF exhibited photocatalytic activity towards the degradation of methylene blue and methyl orange under visible light irradiation. The addition of H2O2 inhibited Y-PTC photocatalytic activity towards MO degradation from 50.89% to 26.38%. In contrast to MO, the addition of H2O2 had a positive effect on MB, which increased the degradation from 87.56% to 91.65%. Therefore, Y-PTC MOF possessed the potential of a photocatalyst material in dyes degradation under visible light irradiation.

Fabrication of magnetic BaFe12O19/Ag3PO4 composites with an in situ photo-Fenton-like reaction for enhancing reactive oxygen species under visible light irradiation

2019 ◽  
Vol 9 (10) ◽  
pp. 2563-2570 ◽  
Author(s):  
Yuanguo Xu ◽  
Feiyue Ge ◽  
Meng Xie ◽  
Shuquan Huang ◽  
Junchao Qian ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Reactive Oxygen ◽  
Light Irradiation ◽  
Oh Radicals ◽  
Oxygen Species

An in situ photo-Fenton-like and magnetic recycle system, BaFe12O19/Ag3PO4 has been constructed. BaFe12O19 can catalyze the conversion of H2O2 to generate ROSs (˙O2− and ˙OH radicals) on the surface of Ag3PO4.

Pyrenediones as versatile photocatalysts for oxygenation reactions with in situ generation of hydrogen peroxide under visible light

2020 ◽  
Vol 22 (1) ◽  
pp. 22-27 ◽  
Author(s):  
Yuannian Zhang ◽  
Xin Yang ◽  
Haidi Tang ◽  
Dong Liang ◽  
Jie Wu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Oxidation Of Sulfides ◽  
In Situ Generation

Pyrenediones (PYDs) are efficient photocatalysts for three oxygenation reactions: epoxidation of electron deficient olefins, oxidative hydroxylation of organoborons and oxidation of sulfides via in situ generation of H2O2 from O2 under visible light irradiation.

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