Wereport an eco-friendly and inexpensive pyrolysis route to produce lightweight and superhydrophobic carbon
fiber aerogel (CFA) by using cheap natural bamboo fiber as raw material. When used as an adsorbent, CFA can
effectively and rapidly adsorb organic liquid fromwastewater and didn't allowanywater adsorption. CFA can adsorb
an extensive range of organic liquids. The adsorption efficiency can reach up to 23–51 times the weight of
original CFA. In addition, CFA shows excellent recyclability, and remained high adsorption efficiency even after
five cycles through burning, squeezing, or extracting. In view of the lightweight feature, good adsorption selectivity,
substantial adsorption efficiency, excellent adsorption recyclability, and easily-operated cost-effective
preparation technique, consequently, we believe that such natural bamboo fiber-derived CFA holds potential
for environmental remediation.More importantly, this work provides a good example to expand high-value applications
of low-cost biomass resources.