A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 143

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 143
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 209
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3098
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "Count" on bool

Filename: helpers/my_audit_helper.php

Line Number: 3100

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3100
Function: _error_handler

File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

Efficient photocatalytic degradation of doxycycline by coupling α-BiO/g-CN composite and HO under visible light. | LitMetric

Efficient photocatalytic degradation of doxycycline by coupling α-BiO/g-CN composite and HO under visible light.

Environ Res

Faculty of Resources and Environmental Science, Hubei University, Wuhan, 430062, China.

Published: June 2021

AI Article Synopsis

  • - Antibiotic pollutants, specifically doxycycline (DOX), threaten both the environment and human health, prompting the development of an effective purification method using a composite catalyst called α-BiO/g-CN coupled with hydrogen peroxide (HO).
  • - The α-BiO/g-CN composite shows a significant increase in photocatalytic activity, achieving 80.5% degradation of DOX in 120 minutes, while the combination with HO improves this rate to 79.0% in just 30 minutes.
  • - The study highlights the role of a Z-scheme heterojunction for improved electron-hole separation and the importance of hydroxyl radicals from HO in the degradation process, leading to a recyclable solution for eliminating antibiotic contaminants

Article Abstract

Antibiotic pollutants have posed a huge threat to the ecological environment and human health. In this work, α-BiO/g-CN composite was prepared and coupled with HO for the rapid and efficient degradation of doxycycline (DOX) in water under visible light irradiation. The composite exhibited enhanced photocatalytic activity and 80.5% of DOX could be degraded in 120 min. The addition of HO significantly improved the degradation efficiency of DOX under visible light, resulting in 79.0% of it degraded within 30 min, and the degradation rate constant of DOX was 3.6 times than that without HO. On the one hand, the Z-scheme heterojunction of α-BiO/g-CN promoted the separation rate of photogenerated electron-hole pairs, thereby enhancing the photocatalytic activity of the composite. On the other hand, the improvement of photocatalytic efficiency also benefited from the extra hydroxyl radicals generated by the reaction of photogenerated electrons with HO in the photocatalytic system. Free radicals trapping experiments and electron spin resonance tests proved that played prominent role in the degradation process. After adding HO, OH also became important active species. Cyclic degradation experiments demonstrated the recyclability of the composite photocatalyst in DOX elimination applications. This work provides an efficient, clean, and recyclable purification strategy for removing antibiotic contaminants from water.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.envres.2021.110925DOI Listing

Publication Analysis

Top Keywords

visible light
12
degradation doxycycline
8
α-bio/g-cn composite
8
photocatalytic activity
8
degradation
6
composite
5
dox
5
efficient photocatalytic
4
photocatalytic degradation
4
doxycycline coupling
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!

A PHP Error was encountered

Severity: Notice

Message: fwrite(): Write of 34 bytes failed with errno=28 No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 272

Backtrace:

A PHP Error was encountered

Severity: Warning

Message: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions)

Filename: Unknown

Line Number: 0

Backtrace: