吸附试验表明：三种吸附剂对Cr(VI)的吸附能力是 245.01mg/g、257.26mg/g、300.88mg/g，这说明 GO-HBP-NH2-TEPA 具有较好的吸附能力。

密度泛函理论计算(DFT)表明：在较低pH条件下，GO-NH2-TEPA更易吸附HCrO4-，而不是Cr2O72- 。该吸附剂可能的吸附机理是：Cr(VI)(HCrO4-或Cr2O72-) 与GO-NH2-TEPA 结构中N 官能团( )的静电相互作用主导对Cr(VI)的吸附，还原机理主导 Cr(VI)离子向 Cr(III)离子的转化。

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