LaCO3OH improving photocatalytic activity of In(OH)3/In2S3 heterostructures

2019 ◽  
Vol 12 (05) ◽  
pp. 1950077
Author(s):  
Lan Guo ◽  
Xin Jin ◽  
Zhaodi Xu ◽  
Aiping Yan ◽  
Yiqun Wan

Lanthanum hydroxycarbonate (LaCO3OH), a kind of fluorescence materials, was less studied in application for photocatalysis. In this paper, LaCO3OH/In(OH)3/In2S3 (LCO/IO/IS) heterostructures were firstly synthesized by a mild two-step hydrothermal method and investigated by various technologies. The activity of as-prepared samples was evaluated by the degradation of Rhodamine B (RhB) under visible light ([Formula: see text][Formula: see text]nm). When the content of LaCO3OH is 15[Formula: see text]mol.% (La/In), the obtained sample exhibits the highest performance, beyond two times as high as that of In(OH)3/In2S3. The improved photodegradation activity might be ascribed to higher adsorption capability and photosensitization of RhB due to proper energy structures of the heterostructures, which prompts the effective separation of electrons and holes. This work extends the application of rear earth salts (lanthanum hydroxycarbonate) for purification of dye waste water.

2013 ◽  
Vol 423-426 ◽  
pp. 163-166 ◽  
Author(s):  
Bao Wei Cao ◽  
Yun Hua Xu

Bi2WO6 doped with iodine ions were synthesized using hydrothermal method and their photocatalytic activities to degrade Rhodamine B (RhB) under visible-light was investigated. The successful incorporation of I ions in Bi2WO6 was proved by XRD and XPS. UV-vis absorption spectra results show that I ion was successfully doped into Bi2WO6 and a red shift for I-doped Bi2WO6 appeared when compared to pure Bi2WO6. The photocatalytic activities of the photocatalysts were evaluated by the decolorization of RhB under visible-light irradiation. The results showed that the photocatalytic activity of I-doped Bi2WO6 was much higher than the undoped Bi2WO6.


2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Guihua Chen ◽  
Gangling Chen ◽  
Yong Wang ◽  
Qingfeng Wang ◽  
Zhen Zhang

A nitrogen doped BiOCl (N-BiOCl) photocatalyst was synthesized and characterized using an ethylenediamine-assisted hydrothermal method. The N-BiOCl sample demonstrated the same tetragonal crystal structure as the as-prepared pure BiOCl sample. SEM results indicated that N-BiOCl sample was self-assembled by nanoplates to provide an aggregated flower-like microstructure. Doped nitrogen was substituted for oxygen in the crystal lattice of BiOCl, causing a red shift for N-BiOCl sample compared to BiOCl sample. The N-BiOCl sample exhibited higher photocatalytic activity in the degradation of Rhodamine B under visible light than observed in BiOCl sample, and the stability of the sample was verified. Meanwhile, speculative causes for the enhancement in the photocatalytic activity of N-BiOCl sample were also proposed.


2019 ◽  
Vol 12 (03) ◽  
pp. 1950025 ◽  
Author(s):  
Shun Wang ◽  
Dongdong Lou ◽  
Zhaojie Wang ◽  
Nuo Yu ◽  
Haifeng Wang ◽  
...  

Graphitic carbon nitride (g-C3N[Formula: see text] has drawn increasing interest as an efficient photocatalyst. To further improve its photocatalytic activity, herein we coupled g-C3N4 with graphene to construct ultrathin g-C3N4/graphene (g-C3N4/G) nanocomposites by a pyrolysis-sonication-hydrothermal method. Under the illumination of visible-light, g-C3N4/G nanocomposites with 10[Formula: see text]wt.%G can degrade 92% Rhodamine B (RhB) in 120[Formula: see text]min, which is higher than that (57%) from pure g-C3N4. Moreover, the recycling experiment indicates that the nanocomposite still remains excellent photocatalytic stability. Therefore, g-C3N4/G nanocomposites exhibit excellent photocatalytic activity and stability, resulting in a promising application in water purification.


2014 ◽  
Vol 43 (39) ◽  
pp. 14537-14541 ◽  
Author(s):  
Yong Qiu ◽  
Xinjun Li

Peroxo-titanium decorated H-titanate-nanotube-based hierarchical microspheres were prepared by a hydrothermal method, and they exhibited enhanced visible-light activity.


2021 ◽  
Author(s):  
Biao Zhang ◽  
Yu Liu ◽  
Kanghong Zhou ◽  
Hongyu Zhu ◽  
Dongxu Gu ◽  
...  

Abstract Novel camellia-structured Z-scheme BiOBr/g-C3N4/Bi2O2CO3 was simply prepared by a hydrothermal method and photodegraded Rhodamine B under visible light within 60 min with much higher degradation efficiency (98%) contrasted with pure BiOBr, g-C3N4 and Bi2O2CO3. Radical trapping experiments exhibited the main reactive species (·O2-) during degradation process. The formation of Z-scheme heterojunction improved rate of charge separation, enhanced absorption of visible light and thus promoted the photocatalytic activity. The Z-scheme heterojunction is a promising material for the removal of dye in effluents.


RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 23024-23037 ◽  
Author(s):  
Fengxia Zhang ◽  
Wenjing Li ◽  
Tianyi Jiang ◽  
Xuemei Li ◽  
Yuanyuan Shao ◽  
...  

Three novel visible-light-driven composite photocatalysts were synthesized by hydrothermal method. The effects of introducing PDIs with different structures into TiO2 were evaluated by assaying the photodegradation rate of methylene blue.


2016 ◽  
Vol 45 (41) ◽  
pp. 16519-16525 ◽  
Author(s):  
Jiao Xue ◽  
Runwei Wang ◽  
Zongtao Zhang ◽  
Shilun Qiu

C, N co-modified niobium pentoxide (Nb2O5) nanoneedles have been successfully synthesized via a facile hydrothermal method with Niobium Chloride (NbCl5) as a precursor and triethylamine as both the carbon and nitrogen source.


2014 ◽  
Vol 25 (4) ◽  
pp. 1292-1303 ◽  
Author(s):  
Gangqiang Zhu ◽  
Mirabbos Hojamberdiev ◽  
Ken-ichi Katsumata ◽  
Nobuhiro Matsushita ◽  
Kiyoshi Okada ◽  
...  

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