1. Graphite, although being nonrenewable, which can be produced from coal formed underground and is widely used to produce graphene or as anode materials in recharge-

able lithium-ion batteries, has also been regarded abundant natural resource.

2.However, the manufacture of foam materials via freeze-drying method generally?

involves the expensive facilities and intensive energy consumption.

3. Therefore, developing biodegradable foam materials from resource-abundant natural materials through an energy-efficient freeze-drying-free approach is highly required

4.The stability of foams has a negative relationship with the thickness of graphite flakes, which means the thinner the graphite flake is, the more stable the foam is.

5.As CNF features abundant oxygenated functional groups, the fibers have a strong tendency to absorb water and swell.?

6.More attractively, the Cu-G-CNF foam demonstrated outstanding stability in both acid and?

alkaline solution, presenting great potential to diverse application of the foam material .

7.At this size regime,the solvation environment of the ions, ion pair configuration, ion-

surface interactions, and ion motion can vastly differ from that inconventional porous materials with mesopores and macropores.

8.Taking the consideration with operation cost, removal efficiency and application scope, adsorption has been proved to be the most suitable means for CTC decontamination.

9.Metal–organic gels (MOGs), twin counterparts of metal–organic frameworks (MOFs), have attracted great interest in energy transformation, sensing, catalysis and adsorption with high surface areas, inherent hierarchical pore structures, stable chemical/mechanical features and abundant functional groups?

10.Thus, we speculate that bimetallic MOGs with lanthanide elements may organically integrate adsorption and detection of pollutants simultaneously by the help of the increased active sites and extraordinary sensitive fluorescence-responses .因此，我們推測，具有鑭系元素的雙金屬MOGs可能借助活性位點的增加和異常靈敏的熒光響應，將吸附和檢測污染物有機地結(jié)合在一起