Three-dimensional TiO2/CeO2 nanowire composite for efficient formaldehyde oxidation at low temperature

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7729-7733 ◽  
Author(s):  
Yongchao Huang ◽  
Haibo Li ◽  
Muhammad-Sadeeq Balogun ◽  
Hao Yang ◽  
Yexiang Tong ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Three Dimensional ◽  
Toluene Oxidation ◽  
Formaldehyde Oxidation ◽  
Good Catalytic Activity

TiO2/CeO2 nanowires exhibited superior catalytic activity that could convert 60.2% of HCHO to CO2 and H2O at a low temperature of 60 °C, and also showed a good catalytic activity toward toluene oxidation.

MOF-derived metal oxide composite Mn2Co1Ox/CN for efficient formaldehyde oxidation at low temperature

2019 ◽  
Vol 9 (20) ◽  
pp. 5845-5854 ◽  
Author(s):  
Xi Wang ◽  
Jiawei Ying ◽  
Yuliang Mai ◽  
Junjie Zhang ◽  
Jiazhi Chen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Metal Oxide ◽  
Low Temperature Oxidation ◽  
Carbon Catalyst ◽  
Temperature Oxidation ◽  
Oxide Composite ◽  
Formaldehyde Oxidation

A novel MOF-derived MnCoOx nanoparticles embedded in porous N-doped carbon catalyst exhibits excellent catalytic activity for the low-temperature oxidation of formaldehyde.

scholarly journals Low temperature catalytic hydrolysis of carbon disulfide over nano-active carbon based catalysts prepared by liquid phase deposition

RSC Advances ◽  
2017 ◽  
Vol 7 (64) ◽  
pp. 40354-40361 ◽  
Author(s):  
Kai Li ◽  
Xin Song ◽  
Guijian Zhang ◽  
Chi Wang ◽  
Ping Ning ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Liquid Phase ◽  
Low Temperature ◽  
Carbon Disulfide ◽  
Metal Species ◽  
Catalytic Hydrolysis ◽  
Liquid Phase Deposition ◽  
Solution Ph ◽  
Good Catalytic Activity ◽  
Hydrolysis Of

Fe/nano-AC has good catalytic activity for CS2 hydrolysis. The activity of the catalyst was affected by the amount of pores (5–10 nm). Metal species affected the oxidation of H2S. The solution pH and fluoride affected the generation of Fe3+.

scholarly journals A Highly Sensitive Electrochemical Glucose Sensor Based on Room Temperature Exfoliated Graphite-Derived Film Decorated with Dendritic Copper

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5067
Author(s):  
Jiaxin Tang ◽  
Luo Wei ◽  
Shuaijie He ◽  
Jihui Li ◽  
Ding Nan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Performance ◽  
High Stability ◽  
Room Temperature ◽  
Glucose Sensor ◽  
Three Dimensional ◽  
Exfoliated Graphite ◽  
Highly Sensitive ◽  
Free Glucose ◽  
Good Catalytic Activity

An ultrasensitive enzyme-free glucose sensor was facilely prepared by electrodepositing three-dimensional dendritic Cu on a room temperature exfoliated graphite-derived film (RTEG-F). An excellent electrocatalytic performance was demonstrated for glucose by using Cu/RTEG-F as an electrode. In terms of the high conductivity of RTEG-F and the good catalytic activity of the dendritic Cu structures, the sensor demonstrates high sensitivities of 23.237 mA/mM/cm2, R2 = 0.990, and 10.098 mA/mM/cm2, R2 = 0.999, corresponding to the concentration of glucose ranging from 0.025 mM to 1.0 mM and 1.0 mM to 2.7 mM, respectively, and the detection limit is 0.68 μM. In addition, the Cu/RTEG-F electrode demonstrates excellent anti-interference to interfering species and a high stability. Our work provides a new idea for the preparation of high-performance electrochemical enzyme-free glucose sensor.

Characterization of Novel Deep Eutectic Ionic Liquids and their Application in Green Synthesis

2010 ◽  
Vol 113-116 ◽  
pp. 1212-1216 ◽  
Author(s):  
Bao You Liu ◽  
Yuan Yuan Wang ◽  
Fu Xiang Wei
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Low Temperature ◽  
Quaternary Ammonium ◽  
Room Temperature ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Sonogashira Reaction ◽  
Good Catalytic Activity

Five novel deep eutectic ionic liquids were prepared from relatively simple quaternary ammonium salts and imidazole. All of these salts are liquids at room temperature, and are steady up to 150°C. They exhibit low viscosities and moderate conductivities at low temperature. Especially, Bu4NCl-IM is a green alternative solvent in Sonogashira reaction with good catalytic activity.

scholarly journals Ag–K/MnO2 nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature

RSC Advances ◽  
2018 ◽  
Vol 8 (26) ◽  
pp. 14221-14228 ◽  
Author(s):  
Suhong Lu ◽  
Xue Wang ◽  
Qinyu Zhu ◽  
Canchang Chen ◽  
Xuefeng Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Complete Oxidation ◽  
Highly Efficient ◽  
Formaldehyde Oxidation

Ag–K/MnO2 nanorods with appropriate K/Ag ratio demonstrated excellent catalytic activity for complete oxidation of formaldehyde.

scholarly journals A luminescent inorganic–organic hybrid, [Cd(C16H10N2O8S)(H2O)], for the selective and recyclable detection of chromates and dichromates in aqueous solution

2019 ◽  
Vol 43 (33) ◽  
pp. 13263-13270 ◽  
Author(s):  
Tanaya Kundu ◽  
Krishna Manna ◽  
Ajay K. Jana ◽  
Srinivasan Natarajan
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Aqueous Medium ◽  
Three Dimensional ◽  
Organic Hybrid ◽  
Good Catalytic Activity ◽  
Dichromate Anions

A three-dimensional inorganic–organic hybrid [Cd(H2L)(H2O)], was shown to exhibit good catalytic activity as well as to detect highly toxic chromate and dichromate anions in aqueous medium with good selectivity.

High resolution electron microscopy of lanthanum phosphate crystals

1978 ◽  
Vol 36 (1) ◽  
pp. 274-275
Author(s):  
J. C. Wheatley ◽  
J. M. Cowley
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
High Resolution ◽  
Petroleum Industry ◽  
High Resolution Electron Microscopy ◽  
Lanthanum Phosphate ◽  
Good Catalyst ◽  
Resolution Electron ◽  
Good Catalytic Activity ◽  
Physical And Chemical

Rare-earth phosphates are of particular interest because of their catalytic properties associated with the hydrolysis of many aromatic chlorides in the petroleum industry. Lanthanum phosphates (LaPO4) which have been doped with small amounts of copper have shown increased catalytic activity (1). However the physical and chemical characteristics of the samples leading to good catalytic activity are not known.Many catalysts are amorphous and thus do not easily lend themselves to methods of investigation which would include electron microscopy. However, the LaPO4, crystals are quite suitable samples for high resolution techniques.The samples used were obtained from William L. Kehl of Gulf Research and Development Company. The electron microscopy was carried out on a JEOL JEM-100B which had been modified for high resolution microscopy (2). Standard high resolution techniques were employed. Three different sample types were observed: 669A-1-5-7 (poor catalyst), H-L-2 (good catalyst) and 27-011 (good catalyst).

scholarly journals Rapid Growth of TiO2 Nanoflowers via Low-Temperature Solution Process: Photovoltaic and Sensing Applications

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 566 ◽  
Author(s):  
M. Akhtar ◽  
Ahmad Umar ◽  
Swati Sood ◽  
InSung Jung ◽  
H. Hegazy ◽  
...  
Keyword(s):  
Low Temperature ◽  
Anatase Phase ◽  
Three Dimensional ◽  
Solution Process ◽  
Dye Sensitized Solar Cell ◽  
Sensor Applications ◽  
Dye Sensitized ◽  
Sensing Applications ◽  
Density Growth ◽  
Temperature Solution

This paper reports the rapid synthesis, characterization, and photovoltaic and sensing applications of TiO2 nanoflowers prepared by a facile low-temperature solution process. The morphological characterizations clearly reveal the high-density growth of a three-dimensional flower-shaped structure composed of small petal-like rods. The detailed properties confirmed that the synthesized nanoflowers exhibited high crystallinity with anatase phase and possessed an energy bandgap of 3.2 eV. The synthesized TiO2 nanoflowers were utilized as photo-anode and electron-mediating materials to fabricate dye-sensitized solar cell (DSSC) and liquid nitroaniline sensor applications. The fabricated DSSC demonstrated a moderate conversion efficiency of ~3.64% with a maximum incident photon to current efficiency (IPCE) of ~41% at 540 nm. The fabricated liquid nitroaniline sensor demonstrated a good sensitivity of ~268.9 μA mM−1 cm−2 with a low detection limit of 1.05 mM in a short response time of 10 s.

Oxygen Vacancy Engineering in Fe Doped Akhtenskite-Type MnO2 for Low-Temperature Toluene Oxidation

2020 ◽  
pp. 119873
Author(s):  
Yu Wang ◽  
Ji Wu ◽  
Gang Wang ◽  
Dengyao Yang ◽  
Tatsumi Ishihara ◽  
...  
Keyword(s):  
Low Temperature ◽  
Oxygen Vacancy ◽  
Toluene Oxidation

scholarly journals CO Oxidation Efficiency and Hysteresis Behavior over Mesoporous Pd/SiO2 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 131 ◽  
Author(s):  
Rola Mohammad Al Soubaihi ◽  
Khaled Mohammad Saoud ◽  
Myo Tay Zar Myint ◽  
Mats A. Göthelid ◽  
Joydeep Dutta
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Active Sites ◽  
Bond Activation ◽  
Dissociative Adsorption ◽  
High Catalytic Activity ◽  
Good Catalytic Activity ◽  
Pretreatment Conditions ◽  
Oxidation Efficiency

Carbon monoxide (CO) oxidation is considered an important reaction in heterogeneous industrial catalysis and has been extensively studied. Pd supported on SiO2 aerogel catalysts exhibit good catalytic activity toward this reaction owing to their CO bond activation capability and thermal stability. Pd/SiO2 catalysts were investigated using carbon monoxide (CO) oxidation as a model reaction. The catalyst becomes active, and the conversion increases after the temperature reaches the ignition temperature (Tig). A normal hysteresis in carbon monoxide (CO) oxidation has been observed, where the catalysts continue to exhibit high catalytic activity (CO conversion remains at 100%) during the extinction even at temperatures lower than Tig. The catalyst was characterized using BET, TEM, XPS, TGA-DSC, and FTIR. In this work, the influence of pretreatment conditions and stability of the active sites on the catalytic activity and hysteresis is presented. The CO oxidation on the Pd/SiO2 catalyst has been attributed to the dissociative adsorption of molecular oxygen and the activation of the C-O bond, followed by diffusion of adsorbates at Tig to form CO2. Whereas, the hysteresis has been explained by the enhanced stability of the active site caused by thermal effects, pretreatment conditions, Pd-SiO2 support interaction, and PdO formation and decomposition.

Sign in / Sign up

Export Citation Format

Share Document