Neodymium-doped Zn-Al layered double hydroxide(Nd/Zn-Al LDH)with excellent photocatalytic ac-tivity was prepared by a one-step hydrothermal method.The morphology and physicochemical prop-erties of as-synthesized photocatalysts were well analyzed by Fourier transform infrared(FT-IR),X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),pho-toluminescence(PL),UV-diffuse reflectance spectroscopy(UV-DRS),and Brunauer-Emmett-Teller(BET)surface analysis.Doping Nd3+into Zn-Al LDH enhances the overall catalytic activity of the nano-composite,like better electron-hole pair separation,increase in interplanar distance,fast electron transfer,and large surface area.The as-prepared nanocomposite shows excellent degradation of three different dyes under visible light irradiation.The degradation efficiency of these dyes follows the order of Congo red＞rose Bengal＞fast green.Furthermore,liquid chromatography-mass spectrometry(LC-MS)was employed to propose a possible photocatalytic degradation pathway for Congo Red and Rose Bengal dyes by Nd/Zn-Al LDH.With the help of radical trapping experiments,it is revealed that during the photoexcitation process,the primary reactive intermediates are hydroxyl radicals.

Ajaz Ahmad Wani;Amjad Mumtaz Khan;Yahiya Kadaf Manea;Mansour A.S.Salem

Department of Chemistry,Aligarh Muslim University,AMU,Aligarh,202002,India

稀土学报（英文版）

[1]Ajaz Ahmad Wani;Amjad Mumtaz Khan;Yahiya Kadaf Manea;Mansour A.S.Salem-.Enhanced photocatalytic degradation of organic dyes from aqueous environment using neodymium-doped mesoporous layered double hydroxide)[J].稀土学报（英文版）,2022(10):1554-1563

Neodymium,Nd3+into

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