scholarly journals Recent Advances on Plasmon-enhanced Titania Nanocatalysts for Photocatalytic Degradation of Organic Dyes

2020 ◽  
Vol 3 (3) ◽  
pp. 117
Author(s):  
Munawar Khalil ◽  
Rendy Muhamad Iqbal ◽  
Grandprix T.M. Kadja ◽  
Dede Djuhana
Keyword(s):  
Water Pollution ◽  
Photocatalytic Degradation ◽  
Industrial Wastewater ◽  
Large Scale ◽  
Recent Progress ◽  
Organic Dyes ◽  
Plasmonic Nanoparticles ◽  
The Past ◽  
Excellent Activity ◽  
Different Types

In the past several years, solar-driven photocatalytic degradation of organic dyes has been considered as one of the most promising and effective ways to address water pollution issues. Nevertheless, the implementation of such technology for large scale industrial wastewater application is still hampered by the limitation in currently used photocatalysts. Recently, plasmon-enhanced titania-based nanocatalyst has emerged as one of the promising photocatalytic materials for solar-driven wastewater treatment due to its excellent activity and ability to absorb a large portion of solar radiation. Therefore, this review highlights recent progress on applying such material for the photodegradation of organic dyes. In this review, the focus is placed on several mechanisms on how the surface plasmon resonance (SPR) phenomenon could enhance the photocatalytic activity of semiconductors, such as TiO2. Furthermore, the performance of several types of plasmon-enhanced titania nanocatalyst with different kinds of metal plasmonic nanoparticles, i.e., Au-TiO2, Ag-TiO2, and Pd-TiO2, is also compared and comprehensively discussed. Finally, a particular emphasis is also given to highlight the nanocatalysts' kinetics in facilitating the photocatalytic degradation of different types of organic dyes.

Recent Progress in Machine Learning-based Prediction of Peptide Activity for Drug Discovery

2019 ◽  
Vol 19 (1) ◽  
pp. 4-16 ◽  
Author(s):  
Qihui Wu ◽  
Hanzhong Ke ◽  
Dongli Li ◽  
Qi Wang ◽  
Jiansong Fang ◽  
...  
Keyword(s):  
Machine Learning ◽  
Drug Discovery ◽  
Large Scale ◽  
Recent Progress ◽  
High Specificity ◽  
Learning Approaches ◽  
Anticancer Peptides ◽  
The Past ◽  
Traditional Approaches ◽  
Large Scale Screening

Over the past decades, peptide as a therapeutic candidate has received increasing attention in drug discovery, especially for antimicrobial peptides (AMPs), anticancer peptides (ACPs) and antiinflammatory peptides (AIPs). It is considered that the peptides can regulate various complex diseases which are previously untouchable. In recent years, the critical problem of antimicrobial resistance drives the pharmaceutical industry to look for new therapeutic agents. Compared to organic small drugs, peptide- based therapy exhibits high specificity and minimal toxicity. Thus, peptides are widely recruited in the design and discovery of new potent drugs. Currently, large-scale screening of peptide activity with traditional approaches is costly, time-consuming and labor-intensive. Hence, in silico methods, mainly machine learning approaches, for their accuracy and effectiveness, have been introduced to predict the peptide activity. In this review, we document the recent progress in machine learning-based prediction of peptides which will be of great benefit to the discovery of potential active AMPs, ACPs and AIPs.

Large-scale synthesis of Au–WO3 porous hollow spheres and their photocatalytic properties

2017 ◽  
Vol 7 (17) ◽  
pp. 3702-3706 ◽  
Author(s):  
Chenying He ◽  
Xia Li ◽  
Yahui Li ◽  
Junfang Li ◽  
Guangcheng Xi
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Hybrid Materials ◽  
Large Scale ◽  
Hollow Spheres ◽  
Photocatalytic Properties ◽  
Excellent Activity ◽  
Visible Light Photocatalytic

Uniform Au–WO3 porous hollow spheres have been synthesized on a large-scale by a general in situ reaction. The hybrid materials exhibit excellent activity for visible-light photocatalytic degradation of organic pollutants.

Thermal Transport Across Carbon Nanotube Connected by Molecular Linkers

2011 ◽  
Author(s):  
Jun Liu ◽  
Mohamed Alhashme ◽  
Ronggui Yang
Keyword(s):  
Thermal Transport ◽  
Large Scale ◽  
Normal Modes ◽  
Thermal Conductance ◽  
Nonequilibrium Molecular Dynamics ◽  
Practical Application ◽  
The Past ◽  
Interfacial Thermal Conductance ◽  
Macro Scale ◽  
Different Types

Carbon nanotubes (CNTs) have been reported to have excellent thermal and mechanical properties over the past two decades. However, the practical application of CNT-based technologies has been limited, due to the inability to transform the excellent properties of single CNTs into macroscopic applications. CNT network structure connects CNTs and can be possibly scaled up to macro-scale CNT-based application. In this paper, nonequilibrium molecular dynamics is applied to investigate thermal transport across two CNTs connected longitudinally by molecular linkers. We show the effect of different types and lengths of molecular linkers on interfacial thermal conductance. We also analyze the density of vibrational normal modes to further understand the interfacial thermal conductance between different molecular linkers and CNTs. These results provide guidance for choosing molecular linkers to build up large-scale CNT-based network structures.

scholarly journals Unified speed estimation of various stabilities

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Mu-Fa Chen
Keyword(s):  
Recent Progress ◽  
Main Topic ◽  
Speed Estimation ◽  
The Past ◽  
Different Types ◽  
Made In

AbstractThe main topic of this talk is the speed estimation of stability/instability. The word “various” comes with no surprising since there are a lot of different types of stability/instability and each of them has its own natural distance to measure. However, the adjective “unified” is very much unexpected. The talk surveys our recent progress on the topic, made in the past five years or so.

scholarly journals Defect levels coupled with oscillations and frustrated spins by Fe+3 in co-precipitated Aluminum ferrites

2022 ◽  
Author(s):  
Ritambhara Dash ◽  
Kumar Gaurav ◽  
Neha Kumari ◽  
Prashant Kumar ◽  
Saurabh Ranjan ◽  
...  
Keyword(s):  
Magnetic Property ◽  
Physicochemical Properties ◽  
Metal Oxides ◽  
Photocatalytic Degradation ◽  
Significant Role ◽  
Large Scale ◽  
Organic Dyes ◽  
Reaction System ◽  
Fine Tuning ◽  
Ion Concentration

Abstract The degradation of organic dyes determines the suitability of a photocatalyst for wastewater treatments. Metal oxides like TiO2, ZnO, CuO, Fe2O3, Ce2O3, and Al-doped Ni Ferrites can degrade dyes. However, fine-tuning of physicochemical properties of the reaction system and characteristics of the reactor plays a significant role in making photocatalytic degradation a large-scale activity. The photoactivity gets altered by altering the Fe+3 ion concentration. The mechanism behind such changes has been addressed here, along with a unique magnetic property of frustrated spins observed.

Recent Progress in Electrochemical Deposition without Supporting Electrolyte

1994 ◽  
Vol 367 ◽  
Author(s):  
V. Fleury ◽  
M. Rosso ◽  
J.-N. Chazalviel
Keyword(s):  
Pattern Formation ◽  
Electrochemical Deposition ◽  
Large Scale ◽  
Recent Progress ◽  
Specific Problem ◽  
Morphological Changes ◽  
Supporting Electrolyte ◽  
Growth Conditions ◽  
Linear Pattern ◽  
The Past

Electrochemical deposition (ECD) of metals is a very old subject[l], which has considerable applications in the context of electroshaping or electroplating. Electrochemists and chemical engineers have long known the different growth conditions of these metal aggregates and the different parameters which drive morphological changes, at least empirically [2-4]. However, in the recent years, after the introduction of the concept of fractal aggregation[5,6], in the field of non-linear pattern formation[7,8], a lot of work has been devoted to the specific problem of growth of electrodeposits from binary electrolytes [9-51] (i.e. without supporting electrolyte). These studies aimed at understanding the morphology, on the large scale (∼1cm) of the deposits and, more specifically, the transitions between morphologies. It is the aim of this paper to review the progress which has been achieved in the past five years on this question.

scholarly journals B (1). Local Structure: Distribution of Different Types of Stars in the Plane

1955 ◽  
Vol 1 ◽  
pp. 25-30
Keyword(s):  
Density Distribution ◽  
Local Structure ◽  
Large Scale ◽  
Milky Way ◽  
Space Distribution ◽  
The Past ◽  
Different Types ◽  
Insight Into

Numerous extensive studies of the space distribution of stars of different spectral types, based on star counts and colour measures, have in the past been published for different sections of the Milky Way.1 These studies have given information on the nearby obscuring clouds, and they have revealed marked differences between the distribution of different kinds of stars. They have not, however, given us the much desired insight into the large-scale features of the density distribution.

scholarly journals Immobilization of TiO2 Nanoparticles in Hydrogels Based on Poly(Methyl Acrylate) and Succinamide Acid for the Photodegradation of Organic Dyes

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 613
Author(s):  
Xiaomeng You ◽  
Hailong Huang ◽  
Ran Zhang ◽  
Zhongli Yang ◽  
Min Xu ◽  
...  
Keyword(s):  
Water Pollution ◽  
Photocatalytic Degradation ◽  
Tio2 Nanoparticles ◽  
Methyl Acrylate ◽  
Organic Dyes ◽  
Pollution Treatment ◽  
Host Matrices

Hydrogels have excellent properties that make them ideally suited as host matrices for the immobilization of photoreactive materials such as TiO2 nanoparticles that serve as catalysts in the photodegradation of organic dyes, which is of great importance in practical water pollution treatment applications. However, the application of hydrogels for this purpose remains poorly studied. The present study addresses this issue by developing two types of hydrogels based on poly(methyl acrylate) and succinamide acid with embedded TiO2 nanoparticles for use as photocatalysts in the photodegradation of organic dyes. The results of the analysis demonstrate that the TiO2 nanoparticles are distributed uniformly in the hydrogel matrices, and the hydrogels maintain their original structures after use. The photodegradation efficiencies of the developed TiO2-hydrogels are demonstrated to be reasonably close to that of freely distributed TiO2 nanoparticles in solution for four different organic dyes. In addition, the results of degradation-regeneration cycling tests demonstrate that immobilizing the TiO2 nanoparticles into the hydrogels greatly reduces their loss during utilization, and the photocatalysts can be easily reused. In fact, the two TiO2-hydrogels retain reasonably high photocatalytic degradation performance after four degradation-regeneration cycles.

scholarly journals Towards omnidirectional, large scale, full polarization, and broadband practical invisibility cloaks: challenges and progress

2014 ◽  
Vol 1 ◽  
pp. 7 ◽  
Author(s):  
Yihao Yang ◽  
Baile Zhang ◽  
Erping Li ◽  
Hongsheng Chen
Keyword(s):  
Large Scale ◽  
Recent Progress ◽  
Broad Band ◽  
Practical Applications ◽  
Physical Mechanisms ◽  
The Past ◽  
The Future ◽  
Invisibility Cloaks ◽  
Extreme Parameters ◽  
The Ideal

Invisibility cloaks have experienced a tremendous development in the past few years, but the current technologies to convert the cloaks into practical applications are still facing numerous bottlenecks. In this paper, we provide the review of the challenges and recent progress in the invisibility cloaks from a practical perspective. In particular, the following key challenges such as non-extreme parameters, homogeneity, omnidirectivity, full polarization, large scale and broad band are addressed. We analyze the physical mechanisms behind the challenges and consequently evaluate the merits and defects of the recent solutions. We anticipate some compromises on the ideal cloaks are required in order to achieve practical invisibility cloaks in the future.

Homochiral hexanuclear nickel(ii) metallocyclic structures with high activity for the photocatalytic degradation of organic dyes

2018 ◽  
Vol 47 (6) ◽  
pp. 1764-1767 ◽  
Author(s):  
Abaid Ullah Malik ◽  
Xia-li Zhou ◽  
Sheng-nan Kong ◽  
Ling-ling Li ◽  
Xiao-li Bao ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
High Activity ◽  
Organic Dyes ◽  
Chiral Ligands ◽  
Excellent Activity

Two chiral hexanuclear nickel(ii) metallocyclic rings with new chiral ligands exhibit excellent activity for the photocatalytic degradation of organic dyes.

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