scholarly journals Facile Synthesis of Bi2MoO6 Microspheres Decorated by CdS Nanoparticles with Efficient Photocatalytic Removal of Levfloxacin Antibiotic

Catalysts ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 477 ◽  
Author(s):  
Shijie Li ◽  
Yanping Liu ◽  
Yunqian Long ◽  
Liuye Mo ◽  
Huiqiu Zhang ◽  
...  
Keyword(s):  
Light Absorption ◽  
Photocatalytic Performance ◽  
High Efficiency ◽  
Charge Carriers ◽  
Cds Nanoparticles ◽  
Efficient Removal ◽  
Photocatalytic Removal ◽  
Visible Light Driven ◽  
Calcination Method ◽  
Huge Challenge

Developing high-efficiency and stable visible-light-driven (VLD) photocatalysts for removal of toxic antibiotics is still a huge challenge at present. Herein, a novel CdS/Bi2MoO6 heterojunction with CdS nanoparticles decorated Bi2MoO6 microspheres has been obtained by a simple solvothermal-precipitation-calcination method. 1.0CdS/Bi2MoO6 has stronger light absorption ability and highest photocatalytic activity with levofloxacin (LEV) degradation efficiency improving 6.2 or 12.6 times compared to pristine CdS or Bi2MoO6. CdS/Bi2MoO6 is very stable during cycling tests, and no appreciable activity decline and microstructural changes are observed. Results signify that the introduction of CdS could enhance the light absorption ability and dramatically boost the separation of charge carriers, leading to the excellent photocatalytic performance of the heterojunction. This work demonstrates that flower-like CdS/ Bi2MoO6 is an excellent photocatalyst for the efficient removal of the LEV antibiotic.

Construction of a novel 2D-2D heterojunction by coupling covalent organic framework and In2S3 for photocatalytic removal of organic pollutants with high efficiency

2021 ◽  
Author(s):  
Luqiu Li ◽  
Dongguang Yin ◽  
Xiandi Guo
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Organic Pollutants ◽  
High Efficiency ◽  
Crystalline Material ◽  
Charge Carriers ◽  
Covalent Organic Frameworks ◽  
Covalent Organic Framework ◽  
Photocatalytic Removal ◽  
Visible Light Driven

Covalent organic frameworks (COFs) representing an emerging class of porous crystalline material have shown promising visible-light-driven hydrogen evolution activity. However, they have a high recombination ratio of charge carriers and...

scholarly journals Development of Visible-Light-Driven Rh–TiO2–CeO2 Hybrid Photocatalysts for Hydrogen Production

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 848
Author(s):  
Jong-Wook Hong
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Light Absorption ◽  
Photocatalytic Performance ◽  
Environmental Issues ◽  
Absorption Efficiency ◽  
Low Light ◽  
Practical Applications ◽  
Visible Light Driven ◽  
Poor Stability

Visible-light-driven hydrogen production through photocatalysis has attracted enormous interest owing to its great potential to address energy and environmental issues. However, photocatalysis possesses several limitations to overcome for practical applications, such as low light absorption efficiency, rapid charge recombination, and poor stability of photocatalysts. Here, the preparation of efficient noble metal–semiconductor hybrid photocatalysts for photocatalytic hydrogen production is presented. The prepared ternary Rh–TiO2–CeO2 hybrid photocatalysts exhibited excellent photocatalytic performance toward the hydrogen production reaction compared with their counterparts, ascribed to the synergistic combination of Rh, TiO2, and CeO2.

CeO2 Nanocrystal Decorated TiO2 Nanobelt with Enhanced Photocatalytic Performance

2021 ◽  
Vol 21 (4) ◽  
pp. 2647-2652
Author(s):  
Yanchen Ji ◽  
Guoxin Song ◽  
Ruiqi Yang ◽  
Longhua Ding ◽  
Aizhu Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Treatment ◽  
Light Absorption ◽  
High Performance ◽  
Photocatalytic Performance ◽  
Synthesis Method ◽  
Charge Carriers ◽  
Controllable Synthesis ◽  
Visible Light Absorption ◽  
Potential Applications

In this work, CeO2 nanocrystal-decorated TiO2 nanobelt for forming a CeO2@TiO2 heterostructure. CeO2 plays a dual role in improving photocatalytic activity, not only by promoting the separation and transfer of photogenerated charge carriers, but also by increasing visible light absorption of the photocatalyst as a photosensitizer. The as-prepared CeO2@TiO2 heterostructure demonstrates the performance of organic degradation and H2 production (about 17 μmol/h/g, which is about 2.5 times higher than that of pure TiO2 nanobelts). Our work provides a facile and controllable synthesis method for high performance photocatalyst, which will have potential applications in synthesis clean/solar fuel, and photocatalytic water treatment.

scholarly journals Rapid Solar-Light Driven Superior Photocatalytic Degradation of Methylene Blue Using MoS2-ZnO Heterostructure Nanorods Photocatalyst

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2254 ◽  
Author(s):  
Ritika ◽  
Manjot Kaur ◽  
Ahmad Umar ◽  
Surinder Mehta ◽  
Surinder Singh ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Performance ◽  
Hexagonal Phase ◽  
Rhombohedral Phase ◽  
Active Species ◽  
Charge Carriers ◽  
Pseudo First Order Reaction ◽  
First Order ◽  
Photocatalytic Removal ◽  
Wurtzite Hexagonal Phase

Herein, MoS2-ZnO heterostructure nanorods were hydrothermally synthesized and characterized in detail using several compositional, optical, and morphological techniques. The comprehensive characterizations show that the synthesized MoS2/ZnO heterostructure nanorods were composed of wurtzite hexagonal phase of ZnO and rhombohedral phase of MoS2. The synthesized MoS2/ZnO heterostructure nanorods were used as a potent photocatalyst for the decomposition of methylene blue (MB) dye under natural sunlight. The prepared MoS2/ZnO heterostructure nanorods exhibited ~97% removal of MB in the reaction time of 20 min with the catalyst amount of 0.15 g/L. The kinetic study revealed that the photocatalytic removal of MB was found to be in accordance with pseudo first-order reaction kinetics with an obtained rate constant of 0.16262 min−1. The tremendous photocatalytic performance of MoS2-ZnO heterostructure nanorods could be accredited to an effective charge transportation and inhibition in the recombination of photo-excited charge carriers at an interfacial heterojunction. The contribution of active species towards the decomposition of MB using MoS2-ZnO heterostructure nanorods was confirmed from scavenger study and terephthalic acid fluorescence technique.

scholarly journals Visible-Light Driven TiO2 Photocatalyst Coated with Graphene Quantum Dots of Tunable Nitrogen Doping

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 344 ◽  
Author(s):  
Xiong Sun ◽  
Hui-Jun Li ◽  
Nanquan Ou ◽  
Bowen Lyu ◽  
Bojie Gui ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Photocatalytic Performance ◽  
Light Emission ◽  
Graphene Quantum Dots ◽  
Visible Light Absorption ◽  
Visible Light Driven ◽  
Nitrogen Doped Graphene

Nitrogen doped graphene quantum dots (NGQDs) were successfully prepared via a hydrothermal method using citric acid and urea as the carbon and nitrogen precursors, respectively. Due to different post-treatment processes, the obtained NGQDs with different surface modifications exhibited blue light emission, while their visible-light absorption was obviously different. To further understand the roles of nitrogen dopants and N-containing surface groups of NGQDs in the photocatalytic performance, their corresponding composites with TiO2 were utilized to degrade RhB solutions under visible-light irradiation. A series of characterization and photocatalytic performance tests were carried out, which demonstrated that NGQDs play a significant role in enhancing visible-light driven photocatalytic activity and the carrier separation process. The enhanced photocatalytic activity of the NGQDs/TiO2 composites can possibly be attributed to an enhanced visible light absorption ability, and an improved separation and transfer rate of photogenerated carriers.

scholarly journals g-C3N4 Homophase Junction With High Crystallinity Using MoS2 as Cocatalyst For Robust Visible-Light-Driven Photocataly Tic Pollutant Degradation

2021 ◽  
Author(s):  
Ying Liu ◽  
Jun Han ◽  
Xianpeng Zeng ◽  
Zongju Tian ◽  
Feifan Yu ◽  
...  
Keyword(s):  
Pollution Control ◽  
Photocatalytic Performance ◽  
Pollutant Degradation ◽  
Composite Photocatalyst ◽  
Co Catalyst ◽  
Simple Strategy ◽  
Ultrasonic Assisted ◽  
Visible Light Driven ◽  
Degradation Ability ◽  
Huge Challenge

Abstract g-C3N4 photocatalyst has attracted great attention in environmental pollution control, but how to further improve its photoactivity is still a huge challenge. Herein, we have developed a simple strategy, by simultaneously improving the photocatalytic performance of g-C3N4 itself by recrystallization method, introducing the promoter MoS2 to form a g-C3N4/g-C3N4/MoS2 composite photocatalyst. Various characterization results show that the homophase junction g-C3N4 prepared by the double-precursor recrystallization treatment improves the crystallinity of the catalyst, and the cocatalyst MoS2 is introduced into the interlayer of g-C3N4 by the ultrasonic-assisted oil bath method to form a stable composite photocatalyst, and the closely contacting interface effectively promotes charge transfer. The optimized photocatalyst g-C3N4/g-C3N4/MoS2 displayed excellent photodegradation performance for methyl orange (k=0.08700 min-1), it shows 6.03 times enhancement of photocatalytic activity for degradation rate compared to homophase junction g-C3N4. In order to test its superior photocatalytic performance, g-C3N4/g-C3N4/MoS2 can be used to degrade other organic pollutants, all of which can show high photocatalytic degradation ability (rhodamine B (k=0.38963 min-1)). This research highlights a feasible strategy for the introduction of co-catalyst engineering to develop excellent photocatalysts.

One-step hydrothermal synthesis of novel Ag3VO4/Ag4V2O7 composites for enhancing visible-light photocatalytic performance

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 95156-95164 ◽  
Author(s):  
Chaojun Ren ◽  
Jian Fan ◽  
Shixiang Liu ◽  
Wenjun Li ◽  
Fangzhi Wang ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Photocatalytic Performance ◽  
High Efficiency ◽  
The Novel ◽  
Visible Light Driven ◽  
One Step ◽  
Visible Light Photocatalytic

The novel Z-scheme Ag3VO4/Ag4V2O7 heterojunction photocatalysts which constructed by one-step hydrothermal method had stable visible-light-driven photocatalytic performance and high efficiency.

A novel Z-scheme porous g-C3N4 nanosheet/Ag3PO4 photocatalyst decorated with N-doped CDs for high efficiency removal of antibiotics

2020 ◽  
Vol 49 (16) ◽  
pp. 5205-5218 ◽  
Author(s):  
Xiaoyi Chen ◽  
Xiuling Xue ◽  
Xiuwen Gong
Keyword(s):  
Photocatalytic Performance ◽  
High Efficiency ◽  
Practical Applications ◽  
Calcination Method

A novel Z-scheme photocatalyst, PCNNS/AP/NCD, was fabricated via an in situ sedimentation–calcination method with excellent photocatalytic performance in practical applications.

Two-dimensional polyimide heterojunctions for the efficient removal of environmental pollutants under visible-light irradiation

2019 ◽  
Vol 21 (31) ◽  
pp. 17163-17169 ◽  
Author(s):  
Xin Wang ◽  
Xinyu Zhao ◽  
Yingnan Zhao ◽  
Hua-Qiao Tan ◽  
Zhilu Du ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Photocatalytic Performance ◽  
Environmental Pollutants ◽  
Light Irradiation ◽  
Two Dimensional ◽  
Efficient Removal ◽  
Interfacial Charge

Synergism of enhanced light absorption and well intimate interfacial charge transition providing excellent photocatalytic performance of polymide heterojunctions PI–TDx.

Sign in / Sign up

Export Citation Format

Share Document