scholarly journals Facile in-situ growth of Ag/TiO2 nanoparticles on polydopamine modified bamboo with excellent mildew-proofing

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Gonggang Liu ◽  
Zhou Lu ◽  
Xiu Zhu ◽  
Xiaoqing Du ◽  
Jinbo Hu ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Binding Mechanism ◽  
Covalent Interaction ◽  
Highly Active ◽  
Structural Nature ◽  
Growth Method ◽  
Fast Growth Rate ◽  
Good Photocatalytic Performance

Abstract Bamboo with the outstanding properties, such as good mechanical strength, fast growth rate and low growth cost, is considered as one of utilitarian structural nature materials. But bamboo is easy to get mildewed resulting in disfiguration and fungi corrosion. In this work, a facile method was developed to improve the mildew-proofing capability of bamboo. Mussel-inspired polydopamine (PDA) with biomimetic adhesion function and highly active functional groups was employed to immobilize highly-dispersed Ag and TiO2 nanoparticles on the surface of bamboo via an in-situ growth method. Integrating the uniform PDA coating, photocatalytic function of TiO2 nanoparticles and bactericidal role of Ag nanoparticles, the mildew-proofing capability of bamboo is enhanced significantly. The results show a non-covalent interaction is more likely to account for the binding mechanism of PDA to bamboo. And the prepared bamboo samples show good photocatalytic performance and have excellent resistance leachability. Meanwhile, the mildew-proofing property of prepared bamboo sample was greatly improved.

Bridging role of Ag0 particles formed in-situ on Ag3PO4/BiPO4 composites for enhanced solar-driven photocatalytic performance

2021 ◽  
pp. 1-12
Author(s):  
Jiufu Chen ◽  
Junbo Zhong ◽  
Shengtian Huang ◽  
Jianzhang Li ◽  
Ran Duan
Keyword(s):  
Photocatalytic Performance

Photocatalytic performance of Pd decorated TiO2–CdO composite: Role of in situ formed CdS in the photocatalytic activity

2015 ◽  
Vol 40 (39) ◽  
pp. 13431-13442 ◽  
Author(s):  
Sanjay B. Kokane ◽  
S.D. Sartale ◽  
K.G. Girija ◽  
Jagannath ◽  
R. Sasikala
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance

scholarly journals Fabrication of Novel ZIF-8@BiVO4 Composite with Enhanced Photocatalytic Performance

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 432 ◽  
Author(s):  
Yun-hui Si ◽  
Ya-yun Li ◽  
Yu Xia ◽  
Shao-ke Shang ◽  
Xin-bo Xiong ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
Composite Photocatalyst ◽  
Photodegradation Efficiency ◽  
Photogenerated Electrons ◽  
Growth Method ◽  
Metal Organic

In this work, a novel metal-organic framework (MOF) and BiVO4 (BVO) composite photocatalyst was successfully synthesized by an in-situ growth method. The characterization of obtained samples was done by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, N2 adsorption, and photoluminescence spectroscopy. The photocatalytic performance of ZIF-8@BiVO4 composite was evaluated by the degradation of methylene blue (MB) under simulated visible light irradiation. Compared with the mixture of BVO and ZIF-8, the composite photocatalyst exhibited superior photodegradation efficiency, which could be attributed to the synergistic effect between BVO and ZIF-8. The reduced recombination of photogenerated electrons and holes was considered to be an important reason for the enhancement of photocatalytic performance. This design demonstrates a rational method to improve the photocatalytic performance by combining photocatalysts with MOFs.

Three-dimensional Gd-doped TiO2 fibrous photoelectrodes for efficient visible light-driven photocatalytic performance

RSC Advances ◽  
2014 ◽  
Vol 4 (23) ◽  
pp. 11750-11757 ◽  
Author(s):  
Junghyun Choi ◽  
P. Sudhagar ◽  
P. Lakshmipathiraj ◽  
Jung Woo Lee ◽  
Anitha Devadoss ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Three Dimensional ◽  
Electrode Geometry ◽  
Doped Tio2 ◽  
Visible Light Driven

Demonstration of the role of electrode geometry on in situ Gd-doping and their effects in the photocatalytic activity.

scholarly journals Pyrene-based Conjugated Polymer/Bi2MoO6 Z-scheme Hybrids: Facile Construction and Sustainable Enhanced Photocatalytic Performance in Ciprofloxacin and Cr(VI) Removal under Visible Light Irradiation

2018 ◽  
Author(s):  
Xianglong Yang ◽  
Yonggang Xiang ◽  
Xuepeng Wang ◽  
Shu Li ◽  
Hao Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
High Activity ◽  
Conjugated Polymer ◽  
Environmental Remediation ◽  
Photocatalytic Performance ◽  
Pt Nanoparticles ◽  
Coupling Reaction ◽  
Highly Active ◽  
Redox Ability

Search for appropriate materials with favorable staggered energy band arrangements is important and of great challenge to fabricate Z-scheme photocatalysts with high activity in visible light. In this study, we demonstrated a facile and feasible strategy to construct highly active organic-inorganic Z-scheme hybrids (P-BMO) with linear pyrene-based conjugated polymer (P17-E) and Bi2MoO6 via in-situ palladium-catalyzed cross-coupling reaction. Characterization results revealed C-O chemical bond formed at the heterointerface between P17-E and Bi2MoO6 after in-situ polycondensation and endowed the hybrids with observably improved photogenerated carries transfer capability. Visible light driven photocatalytic removal of ciprofloxacin and Cr(VI) were significantly enhanced after the incorporation of P17-E into Bi2MoO6 whether with the morphology of nanosheets, nanobelts or microspheres. Moreover, this P-BMO hybrids were also found to exhibit sustainable excellent photocatalytic performance after four runs of photocatalytic evaluation test, suggesting its high activity and stability. To better eliminate the redox ability enhancement of P-BMO, a reasonable Z-scheme electrons transferring mechanism between P17-E and Bi2MoO6 was proposed and proved by the determination of •O2– and •OH and Pt nanoparticles photodeposition experiments. This work might provide a viable source and insight into the design of Z-scheme photocatalysts with excellent redox ability for environmental remediation.

Controllable synthesis of Ag/AgCl@MIL-88A via in situ growth method for morphology-dependent photocatalytic performance

2019 ◽  
Vol 7 (18) ◽  
pp. 5451-5460 ◽  
Author(s):  
Wubin Wu ◽  
Jingchao Wang ◽  
Tianyong Zhang ◽  
Shuang Jiang ◽  
Xiaoyuan Ma ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
In Situ Growth ◽  
Controllable Synthesis ◽  
Growth Method

Several different fusiform-shaped Ag/AgCl@MIL-88A (ACML) materials with good photocatalytic activity were prepared successfully by using the in situ growth method.

Effect of pH Value on Photocatalytic Performance and Structure of AgBr/Ag2CO3 Heterojunctions Synthesized by an In Situ Growth Method

2020 ◽  
Vol 49 (5) ◽  
pp. 3301-3308 ◽  
Author(s):  
Mingyue Guo ◽  
Luyi Wang ◽  
Yongfeng Cai ◽  
Fengfeng Li ◽  
Mingxi Zhang ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Ph Value ◽  
In Situ Growth ◽  
Effect Of Ph ◽  
Growth Method

Spectral characterization and surface complexation modeling of low molecular weight organics on hematite nanoparticles: role of electrolytes in the binding mechanism

2016 ◽  
Vol 3 (4) ◽  
pp. 910-926 ◽  
Author(s):  
Arthur Situm ◽  
Mohammad A. Rahman ◽  
Sabine Goldberg ◽  
Hind A. Al-Abadleh
Keyword(s):  
Aqueous Solution ◽  
Spectroscopic Analysis ◽  
Molecular Level ◽  
Surface Complexation ◽  
Low Molecular Weight ◽  
Binding Mechanism ◽  
Surface Complexation Modeling ◽  
Infrared Spectroscopic Analysis

In situmolecular-level infrared spectroscopic analysis coupled with surface complexation modeling of organics at the aqueous solution–hematite nanoparticle interface.

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.

The role of a metallic copper interlayer during visible photocatalytic hydrogen generation over a Cu/Cu2O/Cu/TiO2 catalyst

2017 ◽  
Vol 7 (21) ◽  
pp. 5028-5037 ◽  
Author(s):  
Wenlong Zhen ◽  
Wenjun Jiao ◽  
Yuqi Wu ◽  
Huanwang Jing ◽  
Gongxuan Lu
Keyword(s):  
High Stability ◽  
Photocatalytic Performance ◽  
Hydrogen Generation ◽  
Metallic Copper ◽  
Tio2 Catalyst ◽  
Photocatalytic Hydrogen Generation ◽  
Copper Interlayer

Cu/Cu2O/Cu/TiO2 catalyst was fabricated by in-situ photoreduction from Cu2O/TiO2, and it showed an excellent photocatalytic performance and high stability for H2 evolution. The interlayer metallic Cu provided a bridge for electrons fast transfer from TiO2 to Cu2O.

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