Effect of TiO₂crystal structure on the catalytic performance of Co₃O₄/TiO₂catalyst for low-temperature CO oxidation

Abstract

Co3O4 supported on TiO2 (anatase (A), rutile (R) and P25 (Degussa)) catalysts were prepared by a deposition–precipitation method. Co3O4/TiO2 (A) shows excellent activity for CO oxidation with 100% conversion at −43 °C.

Meso- and macroporous coral-like Co3O4 for VOCs gas sensor

“…It can be seen that main peaks of Co 3 þ 2p 3/2 and Co 3 þ 2p 1/2 are shown at binding energies of $ 779.6 and $ 795.1 eV, respectively. The energy difference between the Co2p 3/2 peak and the Co2p 1/2 peak is approximately 15 eV [30]. Those of Co 2 þ 2p 3/2 and Co 2 þ 2p 1/2 are located at $ 781.1 and $ 795.7 eV, respectively.…”

Synthesis of TiO2 decorated Co3O4 acicular nanowire arrays and their application as an ethanol sensor

“…It is found that the TiO 2 decorated Co 3 O 4 nanocomposite shows a much better sensing performance than the pristine Co 3 O 4 NW arrays. 2 ) have already been discussed in detail in a previous study. 29 Aer stirring for 20 min, the homogeneous solution was transferred into a 100 ml Teon lined stainless steel autoclave.…”

“…12 As we know, designing a heterojunction structure between different band gap and energy level semiconducting materials is an effective way to enhance the photocatalytic and catalytic activity, and gas sensing performance of the nanocomposite material. 2,[22][23][24] Recently, it has been found that designing a p-n junction by combining Co 3 O 4 with other n-type semiconductors would be a signicant route to enhance its gas response. 12,[25][26][27][28] In the heterogeneous region, the p-type semiconductor Co 3 O 4 and the n-type semiconductor TiO 2 can form a self-built electric eld, and establish a depletion layer.…”

“…[1][2][3][4][5][6] Among its numerous applications, Co 3 O 4 based gas sensors have attracted much attention recently, which exhibit good gas-sensing characteristics. [7][8][9][10][11][12][13][14] To optimize the gas performance of Co 3 O 4 , a large amount of effort has been made to control the morphology and size of Co 3 O 4 in the previous studies.…”

Magnetic carbon-supported cobalt prepared from one-step carbonization of hexacyanocobaltate as an efficient and recyclable catalyst for activating Oxone

“…In Fig. 3(b), the peaks at 780.2 and 781.8 eV can be attributed to Co 3+ and Co 2+ , respectively [53,54]. The peaks at 786.3 and 804.8 eV are considered as the shake-up satellite peaks of Co 2+ [54].…”