Face-to-face interfacial assembly of TiO-g-CN hybrid (2D TCN-A) is developed by surfactant-assisted hydrothermal treatment forming a sandwich structure of anatase TiO nanosheets (TiO-A, 5-6 monolayers) and g-CN nanosheets (∼3 monolayers). Post air-annealing is found effective for insertion of oxygen to the hybrid, which remedies the oxygen vacancies of TiO (B) nanosheets and converts it to anatase nanosheets. The enhanced light adsorption, increased donor density, and prolonged life of charge carries are achieved by variation of bandgap and the formation of heterojuction between the two kinds of nanosheets, facilitating separation and transfer of charge carriers. The 2D TCN-A-70 nanosheets show a high photodegradation rate of methyl orange (k ≈ 0.189 min) and photocatalytic evolution rate of hydrogen (18200 μmol g h). This 2D nanosheets hybrid is potentially useful in alleviating environmental and energy issues.

Cellulose with 15 % fatty oil is converted to a hydrocarbon‐rich oil comprised mainly of alkylbenzenes and aliphatic hydrocarbons through a synergic deoxy reforming (SDR) process. To further decrease the oxygen content and investigate the carbon distribution in the hydrocarbon oil, metal carbides (M2C, M=Mo, W) supported on molecular sieves (ZSM‐5, MCM‐41, SBA‐15) with different pore structures were synthesized and employed as catalysts. The impacts of the M2C particles on the pore size of the supports and the catalytic selectivity were investigated. The ZSM‐5 series of catalysts shows a relatively high selectivity for alkylbenzenes, especially Mo2C/ZSM‐5, because of the abundant acid sites on the catalyst surfaces, whereas the MCM‐41 and SBA‐15 series of catalysts, especially W2C/MCM‐41, show a relatively high selectivity for alkanes, which is attributed to their mesoporous structure. Additionally, Mo2C/MCM‐41 catalysts show the highest deoxygenation efficiency of 95.7 %. This research provides a rational catalyst design to control the carbon distribution and components in SDR oil and paves the way for the full utilization of biomass waste and waste/gutter oil.