Moso bamboo, as a kind of renewable functional material, exhibits outstanding development potential. It is promising to prepare activated carbon with good mechanical strength and high specific surface area using moso bamboo as raw material. In this work, we employed a hydraulic extruder to extrude the bamboo charcoal and the adhesive to obtain the moso bamboo activated carbon, and improved the specific surface area of the columnar activated carbon through high-temperature water vapor activation. Through the catalytic role of the water vapor activation process, the formation and expansion of the pores were promoted and the internal pores were greatly increased. The obtained columnar activated carbon shows excellent mechanical strength (93%) and high specific surface area (791.54 m2/ g). Polyacrylamide@asphalt is one of the most effective adhesives in the high-temperature water vapor activation. The average pore size (22.99 nm) and pore volume (0.36 cm3/ g) of the prepared columnar activated carbon showed a high mesoporous ratio (83%). Based on the excellent pore structure brought by the activation process, the adsorption capacity of iodine (1135.75 mg/g), methylene blue (230 mg/g) and carbon tetrachloride (64.03 mg/g) were greatly improved. The resultant moso bamboo columnar activated carbon with high specific surface area, excellent mechanical properties, and outstanding adsorption capacity possesses a wide range of industrial applications and environmental protection potential.

Preparation of moso bamboo columnar activated carbon with high adsorption property via polyacrylamide@asphalt adhesives and steam activation
    Abstract
    1 Introduction
    2 Materials and methods
        2.1 Materials
        2.2 Preparation of columnar activated carbon
        2.3 Characterizations
    3 Results and discussion
        3.1 Analysis of the theory
        3.2 Columnar activated carbon basic properties
        3.3 Physical and chemical characterization
        3.4 Analysis of specific surface area and pore size
        3.5 Morphology analysis
        3.6 Thermal stability test
        3.7 Adsorption capacity test
    4 Conclusion
    Acknowledgements 
    References

• Huan Liu(College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China)
• Yu Miao(College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China)
• Huayu Tian(College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China)
• Yishan Chen(College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China)
• Enfu Wang(College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China)
• Jingda Huang(College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China)
• Wenbiao Zhang(College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China)