Adsorption-Induced Active Vanadium Species Facilitate Excellent Performance in Low-Temperature Catalytic NOx Abatement

2021 ◽  
Author(s):  
Zhihua Lian ◽  
Jie Wei ◽  
Wenpo Shan ◽  
Yunbo Yu ◽  
Petar M. Radjenovic ◽  
...  
Keyword(s):  
Low Temperature ◽  
Excellent Performance ◽  
Nox Abatement ◽  
Vanadium Species

Medium-Low-Temperature NO2 Sensor Based on YSZ Solid Electrolyte and Mesoporous WO3 Sensing Electrode for Detection of Vehicle Emissions

NANO ◽  
2021 ◽  
pp. 2150083
Author(s):  
Cheng Zhang ◽  
Chuning Jiang ◽  
Xiaohong Zheng ◽  
Xin Hong
Keyword(s):  
Low Temperature ◽  
Electromotive Force ◽  
Electrochemical Impedance ◽  
Yttria Stabilized Zirconia ◽  
Mixed Potential ◽  
Stabilized Zirconia ◽  
Excellent Performance ◽  
Hard Template ◽  
No2 Sensor ◽  
Hard Template Method

A mixed potential-type NO2 sensor was fabricated using yttria-stabilized zirconia (YSZ) as the electrolyte and mesoporous WO3 as the sensing electrode for the detection of NO2 in vehicle exhausts. The mesoporous WO3 with a diameter of 7 nm was synthesized using the hard template method. The sensor showed excellent performance in the detection of 30–500[Formula: see text]ppm of NO2 at 300∘C and 500∘C. However, commercial WO3 only operate well at 500∘C. The response of the mesoporous WO3 was higher and the test temperature was lower compared to that of commercial WO3. XPS combined with NO2-TPD was used to explain the high activity of mesoporous WO3 at medium-low temperature, and the mechanism of mixed electromotive force was verified by electrochemical impedance spectroscopy. Furthermore, the sensor exhibited high NO2 selectivity in the presence of interfering gases, such as NO, CO, CO2 and NH3. Most importantly, the sensor had excellent repeatability and stability.

Low Temperature Selective Catalytic Reduction of NO on CeO2-Fe3O4/TiO2,CeO2 /TiO2 Catalysts Prepared by Coprecipitation Method

2014 ◽  
Vol 960-961 ◽  
pp. 234-239 ◽  
Author(s):  
Wen Long Zhen ◽  
Rui Tang Guo ◽  
Wei Guo Pan
Keyword(s):  
Low Temperature ◽  
Adsorption Capacity ◽  
Selective Catalytic Reduction ◽  
Surface Area ◽  
Catalytic Reduction ◽  
Coprecipitation Method ◽  
High Concentration ◽  
Excellent Performance ◽  
Reduction Of No ◽  
Chemisorbed Oxygen

CeO2-Fe3O4/TiO2and CeO2/TiO2catalysts were prepared by coprecipitation method, and their activities for selective catalytic reduction of NO with NH3were investigated. As can be seen from the experimental results, the CeO2-Fe3O4/TiO2catalyst prepared showed the best SCR activity and SO2resistance. Based on the characterization results of BET, XRD, NH3-TPD and XPS the excellent performance of CeO2-Fe3O4/TiO2catalyst should be resulted from its large surface area, high NH3adsorption capacity and high concentration of surface chemisorbed oxygen.

scholarly journals Low-Temperature Photothermal Therapy: Strategies and Applications

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-38
Author(s):  
Xiulin Yi ◽  
Qiu-Yi Duan ◽  
Fu-Gen Wu
Keyword(s):  
Low Temperature ◽  
Photothermal Therapy ◽  
Combined Treatments ◽  
Excellent Performance ◽  
Cancer Treatments ◽  
Future Directions ◽  
Excessive Heat ◽  
Therapeutic Modalities ◽  
Therapy Strategies ◽  
Mild Temperature

Although photothermal therapy (PTT) with the assistance of nanotechnology has been considered as an indispensable strategy in the biomedical field, it still encounters some severe problems that need to be solved. Excessive heat can induce treated cells to develop thermal resistance, and thus, the efficacy of PTT may be dramatically decreased. In the meantime, the uncontrollable diffusion of heat can pose a threat to the surrounding healthy tissues. Recently, low-temperature PTT (also known as mild PTT or mild-temperature PTT) has demonstrated its remarkable capacity of conquering these obstacles and has shown excellent performance in bacterial elimination, wound healing, and cancer treatments. Herein, we summarize the recently proposed strategies for achieving low-temperature PTT based on nanomaterials and introduce the synthesis, characteristics, and applications of these nanoplatforms. Additionally, the combination of PTT and other therapeutic modalities for defeating cancers and the synergistic cancer therapeutic effect of the combined treatments are discussed. Finally, the current limitations and future directions are proposed for inspiring more researchers to make contributions to promoting low-temperature PTT toward more successful preclinical and clinical disease treatments.

Development of Low-temperature SOECs with Excellent Performance for CO2 and H2O Co-Electrolysis

2021 ◽  
Vol MA2021-03 (1) ◽  
pp. 225-225
Author(s):  
Hu Shiming ◽  
Yitong Li ◽  
Yunfeng Tian ◽  
Bo Chi ◽  
Jian Pu
Keyword(s):  
Low Temperature ◽  
Excellent Performance

scholarly journals Low temperature NH3-SCR performance and mechanism of Mn and Fe supported CeCO3F-monazite catalysts

RSC Advances ◽  
2021 ◽  
Vol 11 (44) ◽  
pp. 27607-27619
Author(s):  
Na Li ◽  
Shenghan Zhang ◽  
Zedong Cheng ◽  
Wenfei Wu
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Rare Earth Elements ◽  
Excellent Performance ◽  
Nh3 Scr ◽  
Mineral Phases ◽  
Performance And Mechanism

The group has shown that Baiyun Ebo rare earth concentrate has excellent performance in NH3-SCR denitrification when used as a carrier, where rare earth elements are mainly present in cerium fluorocarbon ore (CeCO3F) and monazite (CePO4) mineral phases.

scholarly journals Mn-based catalysts supported on γ-Al2O3, TiO2 and MCM-41: a comparison for low-temperature NO oxidation with low ratio of O3/NO

RSC Advances ◽  
2021 ◽  
Vol 11 (31) ◽  
pp. 18945-18959
Author(s):  
Lijun Liu ◽  
Boxiong Shen ◽  
Meng Si ◽  
Peng Yuan ◽  
Fengju Lu ◽  
...  
Keyword(s):  
Low Temperature ◽  
No Oxidation ◽  
Adsorbed Oxygen ◽  
Excellent Performance ◽  
No Conversion ◽  
Mcm 41

The Mn/γ-Al2O3 catalyst exhibited excellent performance for NO conversion in the presence of a low ratio of O3/NO, which was due to the coexistence of Mn3+ and Mn4+ and abundant chemically adsorbed oxygen.

Low temperature oxidative desulfurization with hierarchically mesoporous titaniumsilicate Ti-SBA-2 single crystals

2015 ◽  
Vol 51 (57) ◽  
pp. 11500-11503 ◽  
Author(s):  
Chengxiang Shi ◽  
Wenxuan Wang ◽  
Ni Liu ◽  
Xueyan Xu ◽  
Danhong Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Single Crystals ◽  
Oxidative Desulfurization ◽  
Excellent Performance ◽  
Hierarchically Porous ◽  
Porous Ti ◽  
Ti Content

Hierarchically porous Ti-SBA-2 with high framework Ti content was firstly synthesized and exhibited excellent performance in low temperature oxidative desulfurization.

Adsorption–reduction of chromium(vi) from aqueous solution by phenol–formaldehyde resin microspheres

RSC Advances ◽  
2016 ◽  
Vol 6 (52) ◽  
pp. 46879-46888 ◽  
Author(s):  
Xiaoqing Chang ◽  
Mei Li ◽  
Qiang Liu ◽  
Qinze Liu ◽  
Jinshui Yao
Keyword(s):  
Aqueous Solution ◽  
Low Temperature ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Excellent Performance ◽  
Chromium Vi ◽  
Resin Microspheres ◽  
Adsorption Reduction

A novel adsorbent of phenol–formaldehyde resin (PF) microspheres was prepared at a low temperature, and had an excellent performance for the adsorption–reduction of Cr(vi).

Sign in / Sign up

Export Citation Format

Share Document