Effect of humic acid on visible light photocatalytic inactivation of bacteriophage f2 with electrospinning Cu-TiO2 nanofibers : insight into the mechanisms
© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature..
Photocatalytic disinfection is a promising technology with low cost and high efficiency. However, most of the current studies on photocatalytic disinfection ignore the widespread presence of natural organic matter (NOM) in water bodies, so the incomplete conclusions obtained may not be applicable. Herein, this paper systematically studied the influence of humic acid (HA), one of the most important components of NOM, on the photocatalytic inactivation of bacteriophage f2 with electrospinning Cu-TiO2 nanofibers. We found that with the addition of HA, the light transmittance of the solution at 550 nm decreased from 94 to 60%, and the band gap of the photocatalyst was increased from 2.96 to 3.05 eV. Compared with reacting without HA, the degradation amount of RNA of f2 decreased by 88.7% after HA was added, and the RNA concentration increased from 1.95 to 4.38 ng·μL-1 after the reaction. Hence, we propose mechanisms of the effect of HA on photocatalytic disinfection: photo-shielding, passivation of photocatalysts, quenching of free radicals, and virus protection. Photo-shielding and photocatalyst passivation lead to the decrease of photocatalyst activity, and the reactive oxygen species (ROSs) (·OH, ·O2-, 1O2, H2O2) are further trapped by HA. The HA in water also can protect the shape of phage f2 and reduce the leakage of protein and the destruction of ribonucleic acid (RNA). This work provides an insight into the mechanisms for the influence of HA in photocatalytic disinfection process and a theoretical basis for its practical application.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2024 |
|---|---|
| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:31 |
|---|---|
| Enthalten in: |
Environmental science and pollution research international - 31(2024), 20 vom: 30. Apr., Seite 30212-30227 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Cheng, Rong [VerfasserIn] |
|---|
| Links: |
|---|
| Anmerkungen: |
Date Completed 29.04.2024 Date Revised 30.04.2024 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1007/s11356-024-33119-x |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM370919521 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM370919521 | ||
| 003 | DE-627 | ||
| 005 | 20240430232333.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240411s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1007/s11356-024-33119-x |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1393.xml |
| 035 | |a (DE-627)NLM370919521 | ||
| 035 | |a (NLM)38602633 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Cheng, Rong |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Effect of humic acid on visible light photocatalytic inactivation of bacteriophage f2 with electrospinning Cu-TiO2 nanofibers |b insight into the mechanisms |
| 264 | 1 | |c 2024 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 29.04.2024 | ||
| 500 | |a Date Revised 30.04.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. | ||
| 520 | |a Photocatalytic disinfection is a promising technology with low cost and high efficiency. However, most of the current studies on photocatalytic disinfection ignore the widespread presence of natural organic matter (NOM) in water bodies, so the incomplete conclusions obtained may not be applicable. Herein, this paper systematically studied the influence of humic acid (HA), one of the most important components of NOM, on the photocatalytic inactivation of bacteriophage f2 with electrospinning Cu-TiO2 nanofibers. We found that with the addition of HA, the light transmittance of the solution at 550 nm decreased from 94 to 60%, and the band gap of the photocatalyst was increased from 2.96 to 3.05 eV. Compared with reacting without HA, the degradation amount of RNA of f2 decreased by 88.7% after HA was added, and the RNA concentration increased from 1.95 to 4.38 ng·μL-1 after the reaction. Hence, we propose mechanisms of the effect of HA on photocatalytic disinfection: photo-shielding, passivation of photocatalysts, quenching of free radicals, and virus protection. Photo-shielding and photocatalyst passivation lead to the decrease of photocatalyst activity, and the reactive oxygen species (ROSs) (·OH, ·O2-, 1O2, H2O2) are further trapped by HA. The HA in water also can protect the shape of phage f2 and reduce the leakage of protein and the destruction of ribonucleic acid (RNA). This work provides an insight into the mechanisms for the influence of HA in photocatalytic disinfection process and a theoretical basis for its practical application | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Bacteriophage f2 | |
| 650 | 4 | |a Electrospinning nanofibers | |
| 650 | 4 | |a Humic acid | |
| 650 | 4 | |a Mechanisms | |
| 650 | 4 | |a Photocatalytic disinfection | |
| 650 | 4 | |a Reactive oxygen species (ROSs) | |
| 650 | 7 | |a Humic Substances |2 NLM | |
| 650 | 7 | |a Titanium |2 NLM | |
| 650 | 7 | |a D1JT611TNE |2 NLM | |
| 650 | 7 | |a titanium dioxide |2 NLM | |
| 650 | 7 | |a 15FIX9V2JP |2 NLM | |
| 650 | 7 | |a Copper |2 NLM | |
| 650 | 7 | |a 789U1901C5 |2 NLM | |
| 700 | 1 | |a Xia, Jin-Cheng |e verfasserin |4 aut | |
| 700 | 1 | |a Shen, Liang-Jie |e verfasserin |4 aut | |
| 700 | 1 | |a Shen, Zhi-Peng |e verfasserin |4 aut | |
| 700 | 1 | |a Shi, Lei |e verfasserin |4 aut | |
| 700 | 1 | |a Zheng, Xiang |e verfasserin |4 aut | |
| 700 | 1 | |a Zheng, Jian-Zhong |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Environmental science and pollution research international |d 1994 |g 31(2024), 20 vom: 30. Apr., Seite 30212-30227 |w (DE-627)NLM093849869 |x 1614-7499 |7 nnns |
| 773 | 1 | 8 | |g volume:31 |g year:2024 |g number:20 |g day:30 |g month:04 |g pages:30212-30227 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1007/s11356-024-33119-x |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 31 |j 2024 |e 20 |b 30 |c 04 |h 30212-30227 | ||