Application of Fe3O4/thiamine Magnetic Particles in the Removal of Methylene Blue oleh Lan Tran-Nguyen, Suong Mai-Thi-Thu, Thanh-Ty Nguyen, Kim-Phung Ly, Luu-Ngoc-Hanh Cao, Tran Thi Bich Quyen, Shella Permatasari Santoso, Nguyen-Phuong-Dung Tran, Nguyen Minh Nhut