Synergistic doping of B/Mn in tubular g-C3N4 for enhanced photodegradation of tetracycline using peroxymonosulfate
Thuy Giang Nguyen, Van Thanh Dang, , , , , May-2025, In: Mater. Research Express, 12, p. 055004
Overview
Abstract:
The urgent need to address contaminated antibiotics poses a threat to human health and natural
systems and has led to the advancement of advanced oxidation processes (AOPs). This study presents a
improvement in tetracycline (TC) elimination by engineering g-C3N4 microtubes with co-doping of
boron and manganese (CNBMn), endowing effectively photogenerated carrier under visible light in
the presence of peroxymonosulfate (PMS). The optimized CNBMn2 composition (0.25 mmol boric
acid, 0.5 mmol MnCl2, 0.01 mol cyanuric acid, 0.01 mol melamine) achieved 99% TC removal within
40 min under visible light with 0.75 g l−1 catalyst and 1.5mMPMS. Furthermore, remarkable stability
is achieved with>80% TC removal over six consecutive cycles, owing to a well-engineered stable
structure of CNBMn2. The enhanced performance ofCNBMn2 promotes the generation of reactive
oxygen species (ROS), including sulfate radicals (SO4 ·−), hydroxyl radicals (·OH), superoxide radicals
(O2 ·−), hole (h+) and singlet oxygen (1O2) in the presence ofPMS and light, leading to significant TC
degradation. The effects of various factors on the system, such as PMS concentration, ion matrix,
catalyst dosage, and initial pH, were also examined. This work highlights the architectural control and
concurrent doping of foreign atoms in g-C3N4, specifically for purifying antibiotic-contaminated
water, representing a significant advancement in water treatment technologies.
Keyword(s): advanced oxidation processes (AOPs), B, Mn-codoped graphitic carbon nitride, peroxymonosulfate, photocatalytic degradation, tetracycline
| Article number | 055004 |
| Journal | Mater. Research Express |
| Volume | 12 |
| Publication status | Published - May-2025 |
| ISBN | 2053-1591 |