In situ construction bismuth oxycarbonate/bismuth oxybromide Z-scheme heterojunction for efficient photocatalytic removal of tetracycline and ciprofloxacin

2020 ◽  
Author(s):  
Xuemei Yan ◽  
Qingjie Ji ◽  
Chao Wang ◽  
Jixiang Xu ◽  
Lei Wang
Keyword(s):  
Photocatalytic Removal

Photocatalytic Removal of Soot: Unravelling of the Reaction Mechanism by EPR and in situ FTIR Spectroscopy

ChemPhysChem ◽  
2012 ◽  
Vol 13 (18) ◽  
pp. 4251-4257 ◽  
Author(s):  
Marianne Smits ◽  
Yun Ling ◽  
Silvia Lenaerts ◽  
Sabine Van Doorslaer
Keyword(s):  
Reaction Mechanism ◽  
Ftir Spectroscopy ◽  
In Situ Ftir ◽  
In Situ Ftir Spectroscopy ◽  
Photocatalytic Removal

SFGP 2007 - Photosensitive Composite Disordered Nanostructures over Acceptor Supports: Selective Free Charge Carrier Generators for Environmental Applications

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Cristain Chis ◽  
Alexis Evstratov
Keyword(s):  
Charge Carrier ◽  
Free Charge Carrier ◽  
Charge Carriers ◽  
Environmental Applications ◽  
Free Charge ◽  
Active Components ◽  
Active Materials ◽  
Photocatalytic Removal ◽  
Volatile Organic

Amorphous and low-ordered photosensitive materials are not usually considered to be promising photocatalytic agents because of extremely short free charge carrier (FCC) lifetimes in their active components deprived of well-defined electronic structures. Using active supports favoring an efficient FCC separation in situ, it is possible to protect free charge carriers from the immediate recombination, so even the disordered photosensitive composites can be provided with important photocatalytic capacities. The examples of some environmental applications of this type of active materials, such as volatile organic compound (VOC) photocatalytic removal and bacteria sterilization, are presented in this paper.

Phosphotungstic acid binding in situ to K4Nb6O17 for the effective adsorption-photocatalytic removal of tetracycline

2018 ◽  
Vol 20 (5) ◽  
Author(s):  
Huimin Gu ◽  
Junyu Lang ◽  
Yuli Ma ◽  
Huayu Gu ◽  
Yanyong Song ◽  
...  
Keyword(s):  
Phosphotungstic Acid ◽  
Photocatalytic Removal

scholarly journals Facile Fabrication of Flower-Like BiOI/BiOCOOH p–n Heterojunctions for Highly Efficient Visible-Light-Driven Photocatalytic Removal of Harmful Antibiotics

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1571 ◽  
Author(s):  
Shijie Li ◽  
Bing Xue ◽  
Chunchun Wang ◽  
Wei Jiang ◽  
Shiwei Hu ◽  
...  
Keyword(s):  
Visible Light ◽  
Environmental Remediation ◽  
Exchange Process ◽  
Active Species ◽  
Excellent Performance ◽  
Photocatalytic Removal ◽  
Visible Light Driven ◽  
Facile Fabrication ◽  
Antibiotic Degradation

Novel heterojunction photocatalysts with remarkable photocatalytic capabilities and durability for degrading recalcitrant contaminants are extremely desired; however, their development still remains quite challenging. In this study, a series of flower-like BiOI/BiOCOOH p–n heterojunctions were fabricated via a controlled in situ anion-exchange process. During the process, BiOI formation and even deposition on BiOCOOH microspheres with tight interfacial contact were realized. As expected, BiOI/BiOCOOH heterojunctions revealed remarkable enhancements in photocatalytic antibiotic degradation capacities under visible light irradiation compared with pristine BiOI and BiOCOOH. The best-performing BiOI/BiOCOOH heterojunction (i.e., IBOCH-2) showed much improved photocatalytic CIP degradation efficiency of approximately 81- and 3.9-fold greater than those of bare BiOI and BiOCOOH, respectively. The eminent photocatalytic performances were due not only to the enhanced capability in harvesting photon energies in visible light regions, but also the accelerated separation of electrons and holes boosted by the p–n heterojunction. Active species trapping tests demonstrated that superoxide free radicals (•O2−) and photo-generated holes (h+) were major active species for CIP degradation. Recycling experiments verified the good durability of BIBO-2 over four runs. The facile in situ synthesis route and excellent performance endow flower-like BiOI/BiOCOOH heterojunctions with a promising potential for actual environmental remediation.

scholarly journals CdIn2S4/In(OH)3/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H2 Evolution and Cr(VI) Reduction

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3122
Author(s):  
Rao Fu ◽  
Yinyan Gong ◽  
Can Li ◽  
Lengyuan Niu ◽  
Xinjuan Liu
Keyword(s):  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Environment Pollution ◽  
H2 Evolution ◽  
Intimate Contact ◽  
Highly Active ◽  
Photocatalytic Removal ◽  
Band Alignments ◽  
Photocatalytic H2 Evolution

The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdIn2S4/In(OH)3 nanocomposite was deposited in-situ on NiCr-LDH nanosheets by a simple hydrothermal method, and the obtained CdIn2S4/In(OH)3/NiCr-LDH heterostructure photocatalysts with multiple intimate-contact interfaces exhibited better photocatalytic activity. The photocatalytic H2 evolution rate of CdIn2S4/In(OH)3/NiCr-LDH increased to 10.9 and 58.7 times that of the counterparts CdIn2S4 and NiCr-LDH, respectively. Moreover, the photocatalytic removal efficiency of Cr(VI) increased from 6% for NiCr-LDH and 75% for CdIn2S4 to 97% for CdIn2S4/In(OH)3/NiCr-LDH. The enhanced photocatalytic performance was attributed to the formation of multi-interfaces with strong interfacial interactions and staggered band alignments, which offered multiple pathways for carrier migration, thus promoting the separation efficiency of photo-excited electrons and holes. This study demonstrates a facile method to fabricate inexpensive and efficient heterostructure photocatalysts for solving environmental problems.

In situ synthesis of n–n Bi2MoO6 & Bi2S3 heterojunctions for highly efficient photocatalytic removal of Cr(vi)

2018 ◽  
Vol 6 (45) ◽  
pp. 22580-22589 ◽  
Author(s):  
Xiu-Qing Qiao ◽  
Zhen-Wei Zhang ◽  
Qiu-Hao Li ◽  
Dongfang Hou ◽  
Qichun Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Shell Structure ◽  
In Situ Synthesis ◽  
Light Irradiation ◽  
Core Shell ◽  
Two Dimensional ◽  
Photocatalytic Removal ◽  
Core Shell Structure

Two-dimensional (2D) n–n Bi2MoO6 & Bi2S3 heterojunction with core–shell structure exhibits unprecedented efficiency for photocatalytic reduction of Cr(vi) under visible light irradiation.

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