title: Sulfur-Doped Carbon Nitride Polymers for Photocatalytic Degradation of Organic Pollutant and Reduction of Cr(VI).
abstract: As a promising conjugated polymer, binary carbon nitride has attracted extensive attention as a metal-free and visible-light-responsive photocatalyst in the area of photon-involving purification of water and air. Herein, we report sulfur-doped polymeric carbon nitride microrods that are synthesized through thermal polymerization based on trithiocyanuric acid and melamine (TM) supramolecular aggregates. By tuning the polymerization temperature, a series of sulfur-doped carbon nitride microrods are prepared. The degradation of Rhodamine B (RhB) and the reduction of hexavalent chromium Cr(VI) are selected as probe reactions to evaluate the photocatalytic activities. Results show that increasing pyrolysis temperature leads to a large specific surface area, strong visible-light absorption, and accelerated electron-hole separation. Compared to bulk carbon nitride, the highly porous sulfur-doped carbon nitride microrods fabricated at 650 °C exhibit remarkably higher photocatalytic activity for degradation of RhB and reduction of Cr(VI). This work highlights the importance of self-assembly approach and temperature-control strategy in the synthesis of photoactive materials for environmental remediation.
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China. zhengyun1101@163.com.
authors.forename: Yun
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China. yuzihao15@163.com.
authors.forename: Zihao
authors.initials: Z
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China. linfeng13@mails.ucas.ac.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Lin
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China. guofangsong@outlook.com.
authors.forename: Fangsong
authors.initials: F
authors.lastname: Guo
authors.affiliation: Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia. k_alamry@yahoo.com.
authors.forename: Khalid A
authors.initials: KA
authors.lastname: Alamry
authors.affiliation: Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia. laylataib@gmail.com.
authors.forename: Layla A
authors.initials: LA
authors.lastname: Taib
authors.affiliation: Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia. aasiri2@kau.edu.sa.|Center of Excellence for Advanced Materials Research (CEAMR), Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia. aasiri2@kau.edu.sa.
authors.forename: Abdullah M
authors.initials: AM
authors.lastname: Asiri
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China. xcwang@fzu.edu.cn.
authors.forename: Xinchen
authors.initials: X
authors.lastname: Wang
mesh_terms: D002384:Catalysis; D002857:Chromium / Q000032:analysis / Q000737:chemistry*; D004785:Environmental Pollutants / Q000032:analysis / Q000737:chemistry*; D008958:Models, Molecular; D009570:Nitriles / Q000737:chemistry*; D055668:Photochemical Processes; D011108:Polymers / Q000737:chemistry*; D012235:Rhodamines / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013455:Sulfur / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D004785:Environmental Pollutants; D009570:Nitriles; D011108:Polymers; D012235:Rhodamines; D002857:Chromium; C074702:chromium hexavalent ion; C011206:cyanogen; D013455:Sulfur; C029773:rhodamine B
keywords: Cr(VI) reduction; carbon nitride; photocatalysis; pollutant degradation; self-assembly