Synthesis, characterization, and reactivity of cellulose modified nano zero-valent iron for dye discoloration

- Two green dispersants were innovatively provided for modification of NZVI.
- NZVI was coated with hydroxyethyl cellulose or hydroxypropylmethyl cellulose.
- The dispersity of dispersant modified particles is significantly increased.
- The modified particles perform higher discoloration efficiency than pristine NZVI.
- The possible discoloration and modification mechanism of NZVI were investigated.