Details

Autor(en) / Beteiligte

• Liu, Fanfan
• Zhou, Aiguo
• Chen, Jinfeng
• Zhang, Heng
• Cao, Jianliang
• Wang, Libo
• Hu, Qianku

Titel

Preparation and methane adsorption of two-dimensional carbide Ti2C

Ist Teil von

• Adsorption : journal of the International Adsorption Society, 2016-10, Vol.22 (7), p.915-922

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Here a novel material for methane adsorption was synthesized and studied, which is a graphene-like two-dimensional (2D) carbide (Ti 2 C, a member of MXenes), formed by exfoliating Ti 2 AlC powders in a solution of lithium fluoride (LiF) and hydrochloric acid (HCl) at 40 °C for 48 h. Based on first-principles calculation, theoretically perfect Ti 2 C with O termination has a specific surface area (SSA) of 671 m 2  g −1 and methane storage capacity is 22.9 wt%. Experimentally, 2.85 % exfoliated Ti 2 C with mesopores shown methane capacity of 11.58 cm 3 (STP: 0 °C, 1 bar) g −1 (0.82 wt%) under 5 MPa and the SSA was 19.1 m 2  g −1 . For Ti 2 C sample intercalated with NH 3 ·H 2 O, the adsorbed amount was increased to 16.81 cm 3 (STP) g −1 at same temperature. At the temperature of 323 K, the adsorbed amount of as-prepared Ti 2 C was increased to 52.76 cm 3 (STP) g −1 . For fully exfoliated Ti 2 C, the methane capacity was supposed to be 28.8 wt% or 1148 V (STP)v −1 . Ti 2 C theoretically has much larger volume methane capacity than current methane storage materials, though its SSA is not very high.