scholarly journals Understanding Interaction Capacity of CO2 with Organic Compounds at Molecular Level: A Theoretical Approach

2018 ◽  
Author(s):  
Pham Ngoc Khanh ◽  
Nguyen Tien Trung
Keyword(s):  
Organic Compounds ◽  
Theoretical Approach ◽  
Molecular Level

scholarly journals Molecular-level electrochemical doping for fine discrimination of volatile organic compounds in organic chemiresistors

2020 ◽  
Vol 8 (33) ◽  
pp. 16884-16891 ◽  
Author(s):  
Sooncheol Kwon ◽  
Yusin Pak ◽  
Bongseong Kim ◽  
Byoungwook Park ◽  
Jehan Kim ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Organic Compounds ◽  
Room Temperature ◽  
Molecular Level ◽  
Interfacial Area ◽  
Volatile Organic ◽  
Molecular Scale ◽  
Ppm Level ◽  
State Ionic

A blend of π-CPs and a solid-state ionic liquid provides an enlarged interfacial area at the molecular scale, thereby enabling two-terminal organic chemiresistors (TOCs) with fine discriminatory abilities for sub-ppm-level VOCs at room temperature.

Microscopic modelling of adsorption and the generalised surface layer hypothesis

1981 ◽  
Vol 59 (13) ◽  
pp. 2072-2079 ◽  
Author(s):  
M. V. Sangaranarayanan ◽  
S. K. Rangarajan
Keyword(s):  
Surface Layer ◽  
Organic Compounds ◽  
Molecular Level ◽  
Neutral Molecule ◽  
Potential Difference ◽  
Electrolyte Interface ◽  
State Models ◽  
Microscopic Modelling

Two- and three-state models for the adsorption of organic compounds at the electrode/electrolyte interface are proposed. Different size requirements, if any, for the neutral molecule and the adsorbing solvent are also considered. It is shown how the empirical, generalised surface layer (GSL) relationship (between the potential difference and the electrode charge) formulated by Damaskin et al. can be understood at the molecular level.

Molecular level picture of the interplay between pH and phosphate binding at the goethite–water interface

2020 ◽  
Vol 22 (45) ◽  
pp. 26509-26524 ◽  
Author(s):  
Ashour A. Ahmed ◽  
Stella Gypser ◽  
Dirk Freese ◽  
Peter Leinweber ◽  
Oliver Kühn
Keyword(s):  
Soil Ph ◽  
Theoretical Approach ◽  
Molecular Level ◽  
Water Interface ◽  
Phosphate Binding ◽  
Binding Motifs ◽  
Binding Process ◽  
Substantial Role

The present experimental–theoretical approach describes at a molecular level how the soil pH plays a substantial role in controlling the mechanism of the P binding process and the formed P binding motifs at the goethite/water interface.

1. Introduction

2017 ◽  
pp. 1-5
Author(s):  
Graham Patrick
Keyword(s):  
Organic Chemistry ◽  
Organic Compounds ◽  
Molecular Level ◽  
Modern Society ◽  
Specialist Field ◽  
Structure Properties ◽  
Carbon Based

Organic chemistry is the study of carbon-based compounds in terms of their structure, properties, and synthesis. One reason for considering organic chemistry as a specialist field is because of the vast numbers of different organic compounds that can be synthesized—far more than would be possible for any other element. For over a hundred years, organic chemists have contributed vastly to our understanding of life at the molecular level, and produced novel compounds that have revolutionized modern society. The Introduction explains that there have been many benefits, but also some drawbacks. New discoveries can produce problems that affect health and the environment if they are not used with due care and responsibility.

Artificial Cybernetic Living Individuals Based on SupraMolecular-Level Organization as Dispersed Individuals

2011 ◽  
Vol 17 (1) ◽  
pp. 51-67 ◽  
Author(s):  
Bernard Korzeniewski
Keyword(s):  
Organic Compounds ◽  
Social Insects ◽  
Molecular Level ◽  
Biological Systems ◽  
Chemical Plants ◽  
Fundamental Structure ◽  
Power Stations ◽  
Natural Living ◽  
Characteristic Features ◽  
Definition Of

One of the most characteristic features of spontaneously originating biological systems is that their most fundamental structure and especially functioning is based on molecular-level organization. This property is particularly important when natural living individuals composed of organic compounds of carbon are compared with (hypothetical) artificial living individuals based on metals, plastic, glass, silicon, and so on, whose most basic structural and functional units appear at the supramolecular level. The cybernetic definition of a living individual I proposed previously is used in the present work. I argue that artificial, supramolecular living individuals existing self-dependently in the environment of some distant planet must have the form of dispersed individuals composed of several separate subindividuals that are integrated functionally, but not structurally. These subindividuals would be analogous to such modules of human technical civilization as machines, robots, steelworks, chemical plants, electronic factories, power stations, and mines. Such dispersed individuals would resemble colonies of social insects and moles, which are also composed of separate subindividuals (particular insects and moles) carrying out different specialized functions.

Molecular structure and stability of dissolved lithium polysulfide species

2014 ◽  
Vol 16 (22) ◽  
pp. 10923-10932 ◽  
Author(s):  
M. Vijayakumar ◽  
Niranjan Govind ◽  
Eric Walter ◽  
Sarah D. Burton ◽  
Anil Shukla ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Chemical Stability ◽  
Theoretical Approach ◽  
Molecular Level ◽  
Dissolution Mechanism ◽  
Structure And Stability ◽  
Lithium Polysulfide ◽  
Subsequent Chemical

We present a molecular level study of the dissolution mechanism and subsequent chemical stability of lithium polysulfide species using a combined experimental and theoretical approach.

scholarly journals Increase of nitrooxy organosulfates in firework-related urban aerosols during Chinese New Year's Eve

2021 ◽  
Vol 21 (14) ◽  
pp. 11453-11465
Author(s):  
Qiaorong Xie ◽  
Sihui Su ◽  
Jing Chen ◽  
Yuqing Dai ◽  
Siyao Yue ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Molecular Level ◽  
Urban Atmosphere ◽  
Anthropogenic Emissions ◽  
Formation Processes ◽  
Particle Phase ◽  
Urban Aerosols ◽  
Nighttime Chemistry ◽  
Volatile Organic ◽  
New Year’S Eve

Abstract. Little is known about the formation processes of nitrooxy organosulfates (OSs) by nighttime chemistry. Here we characterize nitrooxy OSs at a molecular level in firework-related aerosols in urban Beijing during Chinese New Year. High-molecular-weight nitrooxy OSs with relatively low H / C and O / C ratios and high unsaturation are potentially aromatic-like nitrooxy OSs. They considerably increased during New Year's Eve, affected by the firework emissions. We find that large quantities of carboxylic-rich alicyclic molecules possibly formed by nighttime reactions. The sufficient abundance of aliphatic-like and aromatic-like nitrooxy OSs in firework-related aerosols demonstrates that anthropogenic volatile organic compounds are important precursors of urban secondary organic aerosols (SOAs). In addition, more than 98 % of those nitrooxy OSs are extremely low-volatility organic compounds that can easily partition into and consist in the particle phase and affect the volatility, hygroscopicity, and even toxicity of urban aerosols. Our study provides new insights into the formation of nitrooxy organosulfates from anthropogenic emissions through nighttime chemistry in the urban atmosphere.

scholarly journals Effects of Different Delocalized π-Conjugated Systems Towards the TiO2-Based Hybrid Photocatalysts

2021 ◽  
Vol 9 ◽  
Author(s):  
Weibo Zhang ◽  
Pinghua Chen ◽  
Jun Liu ◽  
NanNan Huang ◽  
Chenglian Feng ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Organic Material ◽  
Photocatalytic Performance ◽  
Molecular Level ◽  
Photocatalytic Efficiency ◽  
Highly Qualified ◽  
Photocatalytic Ability ◽  
Conjugated Systems ◽  
Hybrid Photocatalyst

Modulating the structure of a photocatalyst at the molecular level can improve the photocatalytic efficiency and provides a guide for the synthesis of highly qualified photocatalysts. In this study, TiO2 was modified by various organic compounds to form different TiO2-based hybrid photocatalysts. 1,10-Phenanthroline (Phen) is an organic material with delocalized π-conjugated systems. It was used to modify TiO2 to form the hybrid photocatalyst Phen/TiO2. Furthermore, 1,10-phenanthrolin-5-amine (Phen-NH2) and 1,10-phenanthroline-5-nitro (Phen-NO2) were also used to modify TiO2 to form NH2-Phen/TiO2 and NO2-Phen/TiO2, respectively. The samples of TiO2, Phen/TiO2, NO2-Phen/TiO2, and NH2-Phen/TiO2 were carefully characterized, and their photocatalytic performance was compared. The results indicated that the photocatalytic efficiency followed the order of NH2-Phen/TiO2 > NO2-Phen/TiO2 > Phen/TiO2 > TiO2. It could be found that modifying TiO2 with different organic compounds containing delocalized π-conjugated systems could enhance the photocatalytic ability; furthermore, the level of this enhancement could be modulated by different delocalized π-conjugated systems.

Sign in / Sign up

Export Citation Format

Share Document