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1. Insights on Na ₃ PS ₄ Solid-State Electrolyte Dry Films: Interfacial Stability and Dry Room Compatibility

   https://doi.org/10.1021/acsenergylett.4c00659  

   Xu, Dapeng; Tang, Wei; Li, Feng; Zhou, Ke; Wu, Junlin; Fuqua, Alexander; Chen, Yu-ting; Lee, Dong Ju; Qin, Jianting; Tao, Andrea R; et al (May 2024, ACS Energy Letters)
2. Selective Wet and Dry Etching of NiO over β-Ga ₂ O ₃

   https://doi.org/10.1149/2162-8777/ac94a0  

   Chiang, Chao-Ching; Xia, Xinyi; Li, Jian-Sian; Ren, Fan; Pearton, S. J. (October 2022, ECS Journal of Solid State Science and Technology)

   Patterning of NiO/Ga 2 O 3 heterojunctions requires development of selective wet and dry etch processes. Solutions of 1:4 HNO 3 :H 2 O exhibited measurable etch rates for NiO above 40 °C and activation energy for wet etching of 172.9 kJ.mol −1 (41.3 kCal.mol −1 , 1.8 eV atom −1 ), which is firmly in the reaction-limited regime. The selectivity over β -Ga 2 O 3 was infinite for temperatures up to 55 °C. The strong negative enthalpy for producing the etch product Ga(OH) 4 suggests HNO 3 -based wet etching of NiO occurs via formation and dissolution of hydroxides. For dry etching, Cl 2 /Ar Inductively Coupled Plasmas produced etch rates for NiO up to 800 Å.min −1 , with maximum selectivities of <1 over β -Ga 2 O 3 . The ion energy threshold for initiation of etching of NiO was ∼55 eV and the etch mechanism was ion-driven, as determined the linear dependence of etch rate on the square root of ion energy incident on the surface. 

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3. Self‐Regenerative Ni‐Doped CaTiO ₃ /CaO for Integrated CO ₂ Capture and Dry Reforming of Methane

   https://doi.org/10.1002/smll.202401156  

   Jo, Seongbin; Gilliard‐AbdulAziz, Kandis Leslie (April 2024, Small)

   Abstract In this work, a new type of multifunctional materials (MFMs) called self‐regenerative Ni‐doped CaTiO₃/CaO is introduced for the integrated CO₂capture and dry reforming of methane (ICCDRM). These materials consist of a catalytically active Ni‐doped CaTiO₃and a CO₂sorbent, CaO. The article proposes a concept where the Ni catalyst can be regenerated in situ, which is crucial for ICCDRM. Exsolved Ni nanoparticles are evenly distributed on the surface of CaTiO₃under H₂or CH₄, and are re‐dispersed back into the CaTiO₃lattice under CO₂. The Ni‐doped CaTiO₃/CaO MFMs show stable CO₂capture capacity and syngas productivity for 30 cycles of ICCDRM. The presence of CaTiO₃between CaO grains prevents CaO/CaCO₃thermal sintering during carbonation and decarbonation. Moreover, the strong interaction of CaTiO₃with exsolved Ni mitigates severe accumulation of coke deposition. This concept can be useful for developing MFMs with improved properties that can advance integrated carbon capture and conversion. 

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4. The effects of ICP dry etching and HF wet etching on the morphology of SiO ₂ surface

   https://doi.org/10.1088/2053-1591/aad591  

   Shariar, Kazy F; Zhang, Jie; Coasey, Keith; Sufian, Md Abu; Remy, Roddell; Qu, Jing; Mackay, Michael; Zeng, Yuping (September 2018, Materials Research Express)
5. Non-equilibrium plasma-assisted dry reforming of methane over shape-controlled CeO ₂ supported ruthenium catalysts

   https://doi.org/10.1039/D3TA01196H  

   Ahasan, Md Robayet; Hossain, Md Monir; Ding, Xiang; Wang, Ruigang (May 2023, Journal of Materials Chemistry A)

   In this report, CeO 2 and SiO 2 supported 1 wt% Ru catalysts were synthesized and studied for dry reforming of methane (DRM) by introducing non-thermal plasma (NTP) in a dielectric barrier discharge (DBD) fixed bed reactor. From quadrupole mass spectrometer (QMS) data, it is found that introducing non-thermal plasma in thermo-catalytic DRM promotes higher CH 4 and CO 2 conversion and syngas (CO + H 2 ) yield than those under thermal catalysis only conditions. According to the H 2 -TPR, CO 2 -TPD, and CO-TPD profiles, reducible CeO 2 supported Ru catalysts presented better activity compared to their irreducible SiO 2 supported Ru counterparts. For instance, the molar concentrations of CO and H 2 were 16% and 9%, respectively, for plasma-assisted thermo-catalytic DRM at 350 °C, while no apparent conversion was observed at the same temperature for thermo-catalytic DRM. Highly energetic electrons, ions, and radicals under non-equilibrium and non-thermal plasma conditions are considered to contribute to the activation of strong C–H bonds in CH 4 and C–O bonds in CO 2 , which significantly improves the CH 4 /CO 2 conversion during DRM reaction at low temperatures. At 450 °C, the 1 wt% Ru/CeO 2 nanorods sample showed the highest catalytic activity with 51% CH 4 and 37% CO 2 conversion compared to 1 wt% Ru/CeO 2 nanocubes (40% CH 4 and 30% CO 2 ). These results clearly indicate that the support shape and reducibility affect the plasma-assisted DRM reaction. This enhanced DRM activity is ascribed to the surface chemistry and defect structures of the CeO 2 nanorods support that can provide active surface facets, higher amounts of mobile oxygen and oxygen vacancy, and other surface defects. 

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