Structure and Luminescence Properties of Ho:(Y_1−xSc_x)₂O₃ Ceramics

Abstract

Experimental Section2.1. Fabrication of 0.5 at% Ho:(Y 1Àx Sc x ) 2 O 3 Ceramics Commercial Y 2 O 3 (99.995%, Jiahua Advanced Material Resources Co., Ltd, Jiangyin, China), Sc 2 O 3 , and Ho 2 O 3 (both 99.99%, Alfa Aesar (Tianjin) Chemical Co. Ltd, Tianjin, China) powders as raw materials were weighed according to the formula [Ho 0.005 (Y 1Àx Sc x ) 0.995 ] 2 O 3 (x ¼ 0, 0.3, 0.5, 0.7, 1.0) and simply denoted as 0.5 at% Ho:(Y 1Àx Sc x ) 2 O 3 . In addition,

Recent Approaches for Cleaving the C─C Bond During Ethanol Electro‐Oxidation Reaction

“…Reproduced with permission. [17] Copyright 2021, Wiley-VCH. D) The polarization curves and power density for different Pd-based electrocatalyst.…”

“…[76] Metal-oxide catalyst always play a crucial role in various complex oxidation reactions. [77][78][79] Huang et al [17] demonstrated that constructing Rh-SnO 2 active interface (Figure 8C) will efficiently achieve a 12-electron EOR process, with a Faraday efficiency of up to 72.8%. Due to the presence of the interface, the electrons of Rh transfer to SnO 2 , causing its d-band to shift upward, which accelerates the cleavage of C─C bonds and the desorption process of C1 intermediates.…”

“…[15,16] In addition, some EOR intermediates (such as *CO) can strongly adsorb on and occupy the active sites of catalysts, degrading the EOR performance significantly. [17][18][19][20][21] Recently, some strategies have been put forward to improve the catalytic performance of Pt and Pd catalysts, such as alloying Pt and Pd with other oxophilic metals. [20][21][22][23][24] The enhanced catalytic performance can be mainly attributed to the bifunctional mechanism.…”

The origin of microstructural inhomogeneity in vacuum‐sintered ZrO2‐doped Lu2O3 transparent ceramics

“…[12][13][14] It has been reported that ZrO 2 is often selected as the sintering additive for rare earth sesquioxide ceramics (e.g., Y 2 O 3 , Lu 2 O 3 , and their solid solutions, etc.). [15][16][17] ZrO 2 -doping introduces more interstitial oxygen ions (O ⋅⋅ i ) and reduces cation ion concentration (RE ⋅⋅⋅ i ), thus slowing down the grain boundary mobility. 18 Currently, there are more studies on the preparation of Y 2 O 3 transparent ceramics using ZrO 2 as a sintering aid.…”

“…It has been reported that ZrO 2 is often selected as the sintering additive for rare earth sesquioxide ceramics (e.g., Y 2 O 3 , Lu 2 O 3 , and their solid solutions, etc.) 15–17 . ZrO 2 ‐doping introduces more interstitial oxygen ions ($${\mathrm{O}}_{\mathrm{i}}^{{\mathrm{\cdot\cdot}}}$$) and reduces cation ion concentration ($${\mathrm{RE}}_{\mathrm{i}}^{{\mathrm{\cdot\cdot\cdot}}}$$), thus slowing down the grain boundary mobility 18 …”