Template-free precursor-surface-etching route to porous, thin g-C3N4 nanosheets for enhancing photocatalytic reduction and oxidation activity

2017 ◽  
Vol 5 (33) ◽  
pp. 17452-17463 ◽  
Author(s):  
Hongwei Huang ◽  
Ke Xiao ◽  
Na Tian ◽  
Fan Dong ◽  
Tierui Zhang ◽  
...  
Keyword(s):  
Treatment Protocol ◽  
Photocatalytic Reduction ◽  
Oxidation Activity ◽  
No Removal ◽  
Surface Etching ◽  
Template Free ◽  
Reduction And Oxidation ◽  
Pre Treatment

Precursor hydrothermal pre-treatment protocol was used to yield porous and thin g-C3N4 nanosheets for enhanced photocatalytic H2 evolution and NO removal.

Photocatalytic reduction and oxidation activities of nanosheet‐assembled anatase TiO 2 microspheres

2015 ◽  
Vol 10 (9) ◽  
pp. 435-438
Author(s):  
Hui Liu ◽  
Tingting Liu ◽  
Xiaonan Dong ◽  
Zhenfeng Zhu
Keyword(s):  
Photocatalytic Reduction ◽  
Reduction And Oxidation

A one-pot consecutive photocatalytic reduction and oxidation system for complete debromination of tetrabromodiphenyl ether

2018 ◽  
Vol 345 ◽  
pp. 586-593 ◽  
Author(s):  
Ming Lei ◽  
Nan Wang ◽  
Shun Guo ◽  
Lihua Zhu ◽  
Yaobin Ding ◽  
...  
Keyword(s):  
Photocatalytic Reduction ◽  
One Pot ◽  
Reduction And Oxidation ◽  
Oxidation System

LaOx Modified MnOx Loaded Biomass Activated Carbon and its Enhanced Performance for Simultaneous Abatement of NO and Hg0

2021 ◽  
Author(s):  
Lei Yi ◽  
Jinke Xie ◽  
Caiting Li ◽  
Jian Shan ◽  
Yingyun Liu ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Activated Carbons ◽  
Active Oxygen Species ◽  
Physicochemical Characterization ◽  
Acid Sites ◽  
Superior Performance ◽  
Bet Surface Area ◽  
Impregnation Method ◽  
Oxidation Activity ◽  
No Removal

Abstract A battery of agricultural straw derived biomass activated carbons supported LaOx modified MnOx (LaMn/BACs) was prepared by a facile impregnation method and then tested for the efficiency of simultaneous abatement of NO and Hg0. 15%LaMn/BAC manifested excellent removal efficiency of Hg0 (100%) and NO (86.7%) at 180 °C, which also exhibited splendid resistance to SO2 and H2O. The interaction between Hg0 removal and NO removal was explored, thereinto Hg0 removal had no influence on NO removal, while NO removal preponderated over Hg0 removal. The inhibitory effect of NH3 was greater than the accelerative effect of NO and O2 on Hg0 removal. The physicochemical characterization of related samples were characterized by SEM, XRD, BET, H2-TPR, NH3-TPD and XPS. After incorporating suitable LaOx into 15%Mn/BAC, the synergistic effect between LaOx and MnOx contributed to the improvement of BET surface area and total pore volume, the promotion of redox ability, surface active oxygen species and acid sites, inhibiting the crystallization of MnOx. 15%LaMn/BAC has the best catalytic oxidation activity at low temperature. That might be answerable for superior performance and preferable tolerance to SO2 and H2O. Finally, the principle of catalytic oxidation was also discussesed in this article.

scholarly journals Manipulating the onset of lambing season in communal ewes through hormonal intervention

2020 ◽  
Vol 50 (2) ◽  
pp. 207-214
Author(s):  
J.M. Rust ◽  
S. Mthi ◽  
T. Rust
Keyword(s):  
Medroxyprogesterone Acetate ◽  
Phase 1 ◽  
Treatment Protocol ◽  
Hormonal Treatment ◽  
Residual Effects ◽  
Seasonal Effect ◽  
Second Phase ◽  
Effective Prevention ◽  
Pre Treatment ◽  
Long Acting

The study was conducted to evaluate the effectiveness of using long-acting medroxyprogesterone acetate (MPA) to delay the lambing season in communal wool sheep ewes. The study was conducted in three phases. In phase 1, a random assessment was made to determine whether the hormone had any effect on delaying the onset of the lambing season. In the second phase, the administration of the hormone at different times during the perceived mating season was assessed. In the third phase, it was investigated whether the use of the hormone had residual effects in the subsequent lambing season after the treatment was discontinued. From the results it is evident that the administration of 150 mg MPA before conception could delay lambing between two and three months. November seems to be the optimum month for hormone administration. However, administration of the hormone did not guarantee effective prevention of conception in all treated ewes and discontinuation of treatment resulted in ewes reverting to pre-treatment lambing patterns. In conclusion, long-acting MPA can be used selectively as an effective method to delay the lambing season in communal ewes and to manipulate it towards more favourable environmental conditions for ewes and lambs. There can be a seasonal effect on time of conception in communal ewes and this should be considered when timing a hormonal treatment protocol. Keywords: communal sheep farming, lambing season, manipulation, medroxyprogesterone acetate

New insights into the relationship between photocatalytic activity and TiO2–GR composites

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29201-29208 ◽  
Author(s):  
Yanyan Zhu ◽  
Yajun Wang ◽  
Wenqing Yao ◽  
Ruilong Zong ◽  
Yongfa Zhu
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Oxidation ◽  
Photocatalytic Reduction ◽  
Photoelectrochemical Properties ◽  
Oxidation Activity ◽  
Reduction Activity ◽  
The Relationship

Composited graphene cannot enhance the photocatalytic oxidation activity of TiO2, but can improve its photocatalytic reduction activity and photoelectrochemical properties.

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