Novelty g-C3N4/HAp composite as highly effective photocatalyst for Cr (VI) photoreduction

被引：26

作者：

Jimenez-Flores, Y. ^{[1
,2
]}

Jimenez-Rangel, K. ^{[1
]}

Samaniego-Benitez, J. E. ^{[1
,3
]}

Lartundo-Rojas, L. ^{[4
]}

Calderon, H. A. ^{[5
]}

Gomez, R. ^{[2
]}

Mantilla, A. ^{[1
]}

机构：

[1] Inst Politecn Nacl, Lab Fotocatalisis, CICATA Legaria, Legaria 694, Ciudad De Mexico 11500, Mexico

[2] Univ Autonoma Metropolitana Iztapalapa, Dept Quim, Area Catalisis, Av San Rafael Atlixco 186, Ciudad De Mexico 09340, Mexico

[3] Inst Politecn Nacl, CONACyT, CICATA Legaria, Legaria 694, Ciudad De Mexico 11500, Mexico

[4] Inst Politecn Nacl, Ctr Nanociencias & Micro & Nanotecnol, Luis Enrique Erro S-N, Ciudad De Mexico, Mexico

[5] Inst Politecn Nacl ESFM, UPALM 9, Ciudad De Mexico 07338, Mexico

来源：

CATALYSIS TODAY | 2022年 / 388卷

关键词：

Photocatalysis; Cr (VI) photoreduction; Composite materials; Hydroxyapatite; g-C3N4; GRAPHITIC CARBON NITRIDE; X-RAY PHOTOELECTRON; HYDROGEN-PRODUCTION; HEXAVALENT CHROMIUM; REDUCTION; CR(VI); HYDROXYAPATITE; WATER; DRIVEN; ZNO;

D O I：

10.1016/j.cattod.2020.07.045

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A novelty g-C3N4/HAp composite photocatalyst was synthetized by precipitation and thermal condensation methods. The composite photocatalyst was studied by XRD technique confirming the presence of both phases in the composite. By FTIR and XPS techniques, the chemical bonds present in the photocatalyst and its components were analyzed. Electron microscopy shows a fine mixture of phases, preserving the lamellar structure of hydroxyapatite. The change in the optical properties of the photocatalyst was investigated by means of UV-vis spectroscopy and its photocatalytic behavior was evaluated for the photoreduction of Cr (VI) in presence of UV and visible light irradiation. g-C3N4/HAp composite showed an increase in its ability to reduce Cr (VI), reaching a total reduction (40 ppm solution) after 25 and 210 min for UV and visible irradiation, respectively. The increase in the photocatalytic activity can be attributed to a synergistic effect produced by the interaction between g-C3N4 and hydroxyapatite.

引用

页码：168 / 175

页数：8

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