Vertically aligned γ-AlOOH nanosheets （NSs） have been successfully fabricated on flexible Al foils via a solvothermal route without morphology-directing agents. Three different reaction temperature （25, 80, and 1...Vertically aligned γ-AlOOH nanosheets （NSs） have been successfully fabricated on flexible Al foils via a solvothermal route without morphology-directing agents. Three different reaction temperature （25, 80, and 120 ℃） and time （30 min, 45 min, and 24 h） are discussed for the growth period, which efficiently tune the density and size of theγ-AlOOH NSs. Meanwhile, the growth speed of the nanosheets confirms that dominant growth stage is seen in the initial 45 min. Furthermore, the interlayer of the γ-AlOOH NSs displays an average height of 140 nm and superhydrophilicity. By dynamic adsorption, the as- synthesized γ-AlOOH NSs exhibit an outstanding NH3 adsorption capacity of up to 146 mg/g and stably excellent regeneration for 5 cycles. The mechanism of NH3 adsorption on the in-plane of the γ-AlOOH NSs is explained by the Lewis acid/base theory. The H-bond interactions among the NH3 molecules and the edge groups （-OH） further improve the capture ability of the nanosheets.展开更多
文摘Vertically aligned γ-AlOOH nanosheets （NSs） have been successfully fabricated on flexible Al foils via a solvothermal route without morphology-directing agents. Three different reaction temperature （25, 80, and 120 ℃） and time （30 min, 45 min, and 24 h） are discussed for the growth period, which efficiently tune the density and size of theγ-AlOOH NSs. Meanwhile, the growth speed of the nanosheets confirms that dominant growth stage is seen in the initial 45 min. Furthermore, the interlayer of the γ-AlOOH NSs displays an average height of 140 nm and superhydrophilicity. By dynamic adsorption, the as- synthesized γ-AlOOH NSs exhibit an outstanding NH3 adsorption capacity of up to 146 mg/g and stably excellent regeneration for 5 cycles. The mechanism of NH3 adsorption on the in-plane of the γ-AlOOH NSs is explained by the Lewis acid/base theory. The H-bond interactions among the NH3 molecules and the edge groups （-OH） further improve the capture ability of the nanosheets.
