Simultaneous removal of Cr(VI) and 4-chlorophenol through photocatalysis by a novel anatase/titanate nanosheet composite: Synergetic promotion effect and autosynchronous doping
dc.contributor.author | Liu, Wen | |
dc.contributor.author | Sun, W | |
dc.contributor.author | Borthwick, Alistair | |
dc.contributor.author | Wang, T | |
dc.contributor.author | Li, F | |
dc.contributor.author | Guan, Y | |
dc.date.accessioned | 2021-08-22T17:29:56Z | |
dc.date.available | 2021-08-22T17:29:56Z | |
dc.date.issued | 2016-11 | |
dc.identifier.issn | 0304-3894 | |
dc.identifier.issn | 1873-3336 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/17720 | |
dc.description.abstract |
Clean-up of wastewaters with coexisting heavy metals and organic contaminants is a huge issue worldwide. In this study, a novel anatase/titanate nanosheet composite material (labeled as TNS) synthesized through a one-step hydrothermal reaction was demonstrated to achieve the goal of simultaneous removal of Cr(VI) and 4-cholophenol (4-CP) from water. TEM and XRD analyses indicated the TNS was a nano-composite of anatase and titanate, with anatase acting as the primary photocatalysis center and titanate as the main adsorption site. Enhanced photocatalytic removal of co-existent Cr(VI) and 4-CP was observed in binary systems, with apparent rate constants (k1) for photocatalytic reactions of Cr(VI) and 4-CP about 3.1 and 2.6 times of that for single systems. In addition, over 99% of Cr(VI) and 4-CP was removed within 120min through photocatalysis by TNS at pH 7 in the binary system. Mechanisms for enhanced photocatalytic efficiency in the binary system are identified as: (1) a synergetic effect on the photo-reduction of Cr(VI) and photo-oxidation of 4-CP due to efficient separation of electron-hole pairs, and (2) autosynchronous doping because of reduced Cr(III) adsorption onto TNS. Furthermore, TNS could be efficiently reused after a simple acid-base treatment. | |
dc.format.extent | 385-393 | |
dc.format.medium | Print-Electronic | |
dc.language | en | |
dc.language.iso | eng | |
dc.publisher | Elsevier BV | |
dc.subject | Autosynchronous doping | |
dc.subject | Combined pollution | |
dc.subject | Photocatalysis | |
dc.subject | Synergetic promotion | |
dc.subject | Titanate nanosheet | |
dc.title | Simultaneous removal of Cr(VI) and 4-chlorophenol through photocatalysis by a novel anatase/titanate nanosheet composite: Synergetic promotion effect and autosynchronous doping | |
dc.type | journal-article | |
dc.type | Journal Article | |
plymouth.author-url | https://www.ncbi.nlm.nih.gov/pubmed/27318735 | |
plymouth.volume | 317 | |
plymouth.publication-status | Published | |
plymouth.journal | Journal of Hazardous Materials | |
dc.identifier.doi | 10.1016/j.jhazmat.2016.06.002 | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics | |
plymouth.organisational-group | /Plymouth/Users by role | |
plymouth.organisational-group | /Plymouth/Users by role/Academics | |
dc.publisher.place | Netherlands | |
dcterms.dateAccepted | 2016-06-02 | |
dc.identifier.eissn | 1873-3336 | |
dc.rights.embargoperiod | Not known | |
rioxxterms.versionofrecord | 10.1016/j.jhazmat.2016.06.002 | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.licenseref.startdate | 2016-11-05 | |
rioxxterms.type | Journal Article/Review |