Tuning the microphase behavior of carbon-precursor polymer blends with surfactant-like nanotubes: Toward catalyst support for water splitting

Achieving Both Ultrahigh Electrical Conductivity and Mechanical Modulus of Carbon Films: Templating‐Coalescing Behavior of Single‐Walled Carbon Nanotube in Polyacrylonitrile

“…[47][48][49][50][51] As shown in the experimental spectra (Figure 7a,b and Figure S4, Supporting Information), the carbonized nanocomposite films exhibited a lower intensity of the D-band than that in the control films over the entire temperature range because of the templating effect and/or the presence of the carbonaceous fillers. [52,53] To trace the structural changes with increasing carbonization temperature, the variations in the intensity ratio of the D-to Gbands (I D /I G ) from 1000 °C to 2500 °C are plotted in Figure 7c. As the carbonization temperature increases, the I D /I G values of the control and nanocomposite systems varied through three distinct stages, as reported in our previous research: [47] (1) the formation of the turbostratic graphitic structure (insignificant change in I D /I G ), (2) the phase conversion to a polycrystalline graphitic structure (sharp increase in I D /I G ), and (3) the in-plane homogenization of highly ordered graphitic structure (sharp reduction in I D /I G ).…”

Green synthesis of heterolayered 2D nanohybrid catalytic hydrogel cell for environmentally-friendly water splitting

“…9 Among the transition metal compounds, few-layered two-dimensional (2D) transition materials have been highlighted as effective electro-catalysts due to their high surface-to-volume ratio and unique electrochemical properties. 10–12 In particular, metallic phase molybdenum disulfides (1T-MoS 2 ) have been acquired from semiconductor phase MoS 2 (2H-MoS 2 ) through chemical/electrochemical intercalation or exfoliation processes with organic solvents, facilitating enhanced catalytic performance in reactions. 13 However, organic solvents (such as N -methyl-2-pyrrolidone and dimethylformamide, dimethyl sulfoxide, and acetonitrile) are widely employed due to their appropriate surface tension (40 mJ m −2 ) when exfoliating the 2D materials, resulting in a negative impact on the environment and health issues.…”

Heterostructured 2D material-based electro-/photo-catalysts for water splitting

“…[58][59][60] In fact, PGMfree or low-PGM electrocatalysts have been explored as alternatives to Pt-based catalysts. [61][62][63] Additionally, the production of noble metal-based catalysts is energy intensive, and their disposal can cause environmental problems. 64,65 Therefore, the search for low-cost and sustainable alternatives to these noble metals has become a major focus in the development of electrocatalysts for HER.…”