王玉萍教授課題組在MATERIALS CHEMISTRY AND PHYSICS發(fā)表研究論文
Effects of different exposed-facets on photocatalytic activity of BiOBr/Bi2Ti2O7 heterostructure and mechanism analysis
Li, PJ (Li, Panjie)[ 1 ] ; Jiang, CY (Jiang, Caiyun)[ 2 ] ; Feng, CS (Feng, Changsheng)[ 1 ] ; Wang, YP (Wang, Yuping)[ 1,3 ]*（王玉萍）
[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Prov Key Lab Mat Cycling & Pollut Control, Nanjing 210046, Peoples R China
[ 2 ] Jiangsu Inst Commerce, Dept Engn & Technol, Nanjing 211168, Peoples R China
[ 3 ] Nanjing Univ Sci & Technol, Jiangsu Key Lab Chem Pollut Control & Resources R, Nanjing 210094, Peoples R China
MATERIALS CHEMISTRY AND PHYSICS,202009,252,123426
In this paper, the novel heterojunctions of Bi2Ti2O7 and BiOBr with different crystal facets ({001} and {010}) were synthesized by in-situ precipitation method under room temperature. The structure and properties of the materials were analyzed. The photodecomposition properties of the materials were studied by using rhodamine B (RhB) and ciprofloxacin (CIP) as targets. The possible mechanism of the difference of facet-engineering on photocatalytic degradation was studied. The XPS results indicated that the high-quality interfacial connection existed in Bi2Ti2O7/BiOBr hetemstructure. It was found that the RhB and CIP degradation rates of Bi2Ti2O7/BiOBr-{010} photocatalyst are 2.05 and 1.82 times higher respectively than that of Bi2Ti2O7/BiOBr-{001} under visible light. This enhancement was mainly attributed that laminate BiOBr dominating {010} exposed-facet with higher the specific area (S-BET) combined with spherical Bi2Ti2O7, which extended S-BET and provided more active site; furthermore, the formation of the type-II band location and strong interfacial interaction vastly weaken the barrier of electron transfer, promoting the quantum efficiency. The synergistic effect of facet-engineering and composite structure were discussed in detail, providing significant reference to design highly active photocatalyst.
文章鏈接：
https://www.sciencedirect.com/science/article/pii/S0254058420307938?via%3Dihub
版權(quán)與免責(zé)聲明：本網(wǎng)頁(yè)的內(nèi)容由收集互聯(lián)網(wǎng)上公開(kāi)發(fā)布的信息整理獲得。目的在于傳遞信息及分享，并不意味著贊同其觀點(diǎn)或證實(shí)其真實(shí)性，也不構(gòu)成其他建議。僅提供交流平臺(tái)，不為其版權(quán)負(fù)責(zé)。如涉及侵權(quán)，請(qǐng)聯(lián)系我們及時(shí)修改或刪除。郵箱：sales@allpeptide.com