Science topics: ChemistryGreen Chemistry
Science topic
Green Chemistry - Science topic
Green Chemistry are green Methodologies in Organic Synthesis
Questions related to Green Chemistry
Dear researchers,
I tried and understood that PLA dissolves well in the solvent mixture of DCM and Ethanol. It also dissolves well in DMF, Acetone, THF and Chloroform efficiently. But does anyone here knows a green solvent which I can use to dissolve PLA easily and efficiently?
Thank you so much for your timely help.
Any papers on this would be appreciated.
What are the opportunities in Green Chemistry Research?
Preferably with examples of optimizing the reaction according to the principles of green chemistry.
Is there any single or bimetallic nanoparticle that can mimic the role of cellulase? I have seen some papers on metal-organic frameworks regarding this but I'm curious to know if metallic nanoparticles alone can do the job of cellulase.
I do not know of a plant extract that can act as reducing, capping and binding agent for this synthesis. I also want to know if such a nanocomposite can be biosynthesized in the first place because I have seen papers that reported its synthesis via conventional approaches/non-biogenic approaches.
What is the purpose of adding pyridine in these reactions (O.G. Backeberg and B. Staskun, J. Chem. Soc., 1962, 3961–3963),
where Raney Nickel is used as a catalyst for reducing nitriles to aldehydes in the presence of NaH2PO2 by using AcOH/H2O/pyridine as the solvent system?
Additionally, are there any suitable reagents that can replace pyridine in this reaction?
Until now, the majority of literature concerning the reaction involving Raney nickel and NaH2PO2 employs AcOH/H2O/pyridine as the solvent system.
Specifically interested in purine derivative as a cation of ionic liquid.
Any relevant reading suggestions are highly appreciated. Thanks.
Dear researchers, I am performing research on solar heat for industrial production using concentrated solar power. From what I've seen in the literature, the production of green hydrogen using solar thermochemical water splitting is done using either solar tower or parabolic dish. I could not find a paper that investigated the use of parabolic trough collectors for green hydrogen production. I wonder if that's possible or not.
I am sincerely
I really need you help and experience in order to understand if the results of my PCR experiments are bias or not. I have performed qPCR regarding the following genes, ALP. OSC, EGF, TGF, MPP1.
I always run my triplicates in three independed runs in order to be sure that the results will be convalidated at each run. The strange thing that I came across is that at each triplicate run 1 or 2 values of my fold change where extremely high. I obtained fold changes for the EGF gene that were among 2 fold change, 13, 26, and 123 fold change. Is this normal??? It is the very first time that I come across of such a huge fold change and I do not know how to explain it. I have performed my PCR using the same concentration of cDNA up to 500ng for all the samples using Syber Green chemistry.
I am sincerely alarmed if I can trust these results and extract my conclusions regarding my experiments.
Could you please illuminate me????
Dear science community!
I need your help, please!
I`m totally disapointed and at a loss!
In 2020 (at the end of October) there were the IOP Conference Series: Materials Science and Engineering (ICoSiET 2020). Me and my colegues took part in these conference. As the result (like a result of any other conference) the thesis collection should have been published (at the 4th quarter of the 2020)). Unfortanately, these collection still haven`t publised (despite the fact that 2021 is already at its end).
So, I wonder, if there are anybody, who know something about this situation? Maby there are any of those who also waiting for their thesis?
We have wrote lots of messages to the organizators and the head of the university (in which this conference took place) but they stoped to respond us.
I think this situation shows disrespect for the conference participants. And I believe that such situations should be inlighted in our community!
Thank you, for your attention!
Together with some dear colleagues we are working on a new project. what do you think about the relationship between green chemistry and circular economy models applied to the clothing industry?
I have tried to cure the CNSL resin with a Hot air oven of 180 degrees Celsius. Still, I am not getting the proper solidification of the resin, the specimen which is kept in a Hot air oven is in a spongy state. I want to know the process/ steps/ procedure for curing the CNSL resin?
As a byproduct I obtatin glycerol from transesterification reaction. I currently expecting to developed a handsanitizer from crude glycerol. My question is how I can develope a handsanitizer from crude glycerol?
I am trying to remove phosphate from wastewater sample and also recover them. Is there any material that only absorb phosphate from water? Therefore, which natural material should be appropriate to use as absorbent?
I want to do a post-doctorate in green chemistry. So for that please suggest to me the country or researcher who works on Green Chemistry. If anybody suggests it to me, I will try to do it. Waiting for the reply.
Plants have depended on microbial assistance since they first edged out of the water onto dry land, about 450 million years ago. They lassoed photosynthetic cyanobacteria and turned them into cellular machines known as chloroplasts, which harvest the sun’s energy. Today, plants are still supported by hundreds of thousands—perhaps millions—of different species of bacteria, fungi, even viruses. In fact, the rhizosphere, the area around a plant’s roots, is considered one of the most ecologically diverse regions on the planet.
American Chemical Society (ACS) has provided a solvent selection tool for chemistry reactions from the perspective of Green Chemistry. Have you any idea how to operate the tool or any informative video? Here is the link to the tool. https://www.acs.org/content/acs/en/greenchemistry/research-innovation/tools-for-green-chemistry/solvent-tool.html
For the synthesis of castor based polyester polyol having below specification:
1. Viscocity: 6000 MPas
2. OHV: 80 to 100 mgkoh/gm
3. Color gardner: 5 max
4. Odour: Ghee (buttery) like
5. Imparting flexibility
I am using enzymatic desizing process. after that Using Sodium Percarbonate for scouring and bleaching. Cotton fabric is gets white but still tegawa rating is poor.
I am Looking for suggestion for easy method of desizing. Share your opinion.
Which field is better for master's program?
1) Interfacial and surface chemistry: biosensing, electrochemistry, electronics
2) Materials and polymer chemistry: clean energy
3) Physical chemistry: superresolution microscopy, laser spectroscopy, biophysics
4) Catalytic processes: green chemistry
Actually I am keen on all 4 options and do not know which one to choose.( I have to choose one of them.)
Please share with me if you have information about these fields. I will be happy to know your point of view.
Comparison in terms of: the demand and needs of the community, the application, the novelty of the field and other factors that you think are important to consider.
Thanks.
I am looking for bio-based Succinic acid pricing information and would also like to know a few companies interested in buying-selling it.
In a few reference books of environmental engineering is mentioned that maximum acceptable concentration of nitrate is 10 mg/L as N. What's the meaning of "as N" in this unit of measurement? What's the usage of it?
Thanks for your assistance
I have a project to synthesis quinazolinone from benzoxazine with aniline. What solvent should i use if synthesize it with microwave.
I would like to use environmentally benign solvents for dissolution of PMMA to make thin films and coatings.
The European Parliament has approved a ban on single-use plastics by 2021. Currently there is a growing concern about the environmental and health issues caused by plastic and micro (nano) plastics wastes. This ban approved by the European Parliament means a scientific and economical challenge for both plastic industry and society in general, so I would like to discuss some points about it with the RG community.
Which could be the best replacement materials / products or perspective to adopt on the single-use plastics issue, which nowadays are everywhere in the daily life? Are we scientifically / technically prepared for these changes? I also would like to know if there are new proposals to deal with this challenges, and of course, deal with the existing contamination of plastics and micro (nano) plastics.
There are hundreds of research articles published on the green synthesis of nanoparticles of various metals and metal oxides nanoparticles using plant extract (where mostly the extract of leaves are used) and they reported that plant extract is in rich of phytochemicals which act as reducing, stabilizing/capping agent for the synthesis of Nanoparticles but still its not cleared that exactly which phytochemical or which class of phytochemicals is responsible for reducing and which for stabilizing/capping? And also if they are used separately after isolated would they gave the same result or each class depend on one another??
I am testing a new material as adsorbent for the removal of methyl orange dye from aqueous solution, I got the below results, do I need to go further with higher concentrations even the removal percentage started to decrease? and wich adsorption capacity I can report for my material?
I have used NaOH solution to control the pH of the system for the fabrication of Fe3O4 NPs following the green chemistry approach. When I take edx spectrum of Fe3O4 NPs I observed a huge peak of Na (Sodium) in it. I would like to ask how these positive ionic impurities can affect my final product. As my NPs are quasi-spherical in structure and dark brown in color. As in FT-IR, I did not observe clear peaks related to Na (Sodium).
How to separate two water-soluble compounds like sugar and salt/ionic liquids, what is the effective method to separate them?
Green Chemistry in the Pharmaceutical Industry
Peter Dunn (Editor), Andrew Wells (Editor), Michael T. Williams (Editor)
ISBN: 978-3-527-32418-7
Hardcover
388 pages
March 2010
what are the new green routes to create sustainable energy solutions??
We are working on the synthesis of organic compounds using ionic liquids are these ionic liquids are green solvents ? How to remove the ionic liquid efficiently when the reaction is complete ?
Actually as a beginner in this field i need to known about what the tips or problems that a researcher exposed to it during the green chemistry of nanoparticles using the neutral sources?
for me i learn some thing if i worked in certain sources were mentioned in an article i can followed the article protocol but if the neutral source is a novel i must do optimization steps which depend on pH, Temperature, concentration of salts, concentration of extracts and illumination.
please tell me and other beginner researchers about the tips to learn more and more
Thank you in an advance.
I am working on biodiesel production by using the crude palm oil or rubber seed oil, our product colour is dark brown. I want to improve the colour from dark brown to colourless. Is it possible ?
Dear colleagues, I need specialists’ suggestions who deal with the extraction of polyphenols.
I am wondering whether there is a green and cost-efficient extraction technique of ferulic acid from wheat and rye bran?
Based on my results and the data obtained by other researchers I know that ferulic acid is the main phenolic acids representative found in cereals. However, this hydroxycinnamic acid derivative is extremely integrated into cell-walls of plant material and classified as non-extractable polyphenol. The recovery of ferulic acid makes up 1%.
I did several experiments with different bran samples using conventional extractions; however, the results leave something to be desired.
I also conducted hydrolysis of my samples with NaOH and HCl, the recovery is much better, though this approach led to the destruction of acid, base, and thermolabile compounds.
Thank you very much for your valuable suggestions and comments on this matter!
Yours sincerely,
Vitali
I have prepared miRNA cDNA using Taqman advanced miRNA cDNA synthesis kit and used them with Taqman qPCR Assay. Now i want to assess expression level of more miRNAs in same samples using SYBR green chemistry. so is there any chance that it can be done using SYBR green with the same cDNA??
6th Vienna young Scientists Symposium, TU Wien (Vienna University of Technology), Austria
June 25-26, 2020
Consisting of four mini-symposia, the symposium has an overall theme of "Technology, Science, and Design for a Sustainable World". The themes of the mini-symposia are:
• Innovative Materials and Green Chemistry
• Energy and Resource Engineering
• Sustainable Buildings, Cities and Infrastructures
• Environmental Analysis and Modeling
Abstract submission deadline: March 15, 2020
"The purpose of the innovative platform Vienna young Scientists Symposium (VSS) is to enhance the interdisciplinary professional exchange between members of the TU Wien." "All scientific staff and students of TU Vienna are cordially invited to participate in this event as speakers."
More information at: https://vss.tuwien.ac.at/home/EN/
#VSS2020 #TUWien #scientists #symposium #technology #science #design #sustainableworld #sustainability #innovation #materialsscience #greenchemistry #energy #resourceefficiency #sustainablearchitecture #sustainablebuilding #sustainablecities #sustainableinfrastructure #architecture #urbanplanning #urbandesign #civilengineering #climatechange #research #environmentalanalysis #environmentalmodeling
When I synthesise ester derivatives from pyridin-4-ol why do they turn to keto-enol tautomerism, do both hydroxy and NH parts react wth acid?
I mean is the Green Chemistry not harmful to environment?
Green chemistry ,and green organic food is proved healthy,but many peoples dont recognize and take these topic for serious .Most disease.irrited colon and cancer come from inorganic and cholesterol diets,so all research goes to organic food and plant and vegetables But why many peoples dont take this as serious?.
Hello ,
We need to do ddPCR (Eva green chemistry) for a primer pair that yields a 429 bp amplicon. It is a single band on gel. I understand that there are reason for restriction amplicon size in real time PCR. Is there any such restriction for ddPCR. If yes please let me know the reasons.
Is there any method (green one) to produce SrCO3@NiO nanocomposites?
I have used Energy Dispersive X-ray Spectroscopy (EDAX-EDS) to analyse the elemental composition of my catalyst, I am wondering is there any accurate analysis (other than XPS) to determine the composition of elements (specially trace elements) in my sample ?
Actually I have three different Questions
1. who gave the first concept of green chemistry?
2. who was the first to give concept of green nanotechnology or the first to work on?
3. who was the first person to synthesize metal nanoparticles using green method?
Note: kindly also provide the literature containing above answers...!
Thanks alot!
In CO2 photoreduction, in order to determine the order of reaction, it is important to know concentration change with time. how do we do that? i found a titration method using standard NaOH solution. this method can be used to know the initial concentration, but not the concentration in the middle of experiment. Is there any reference for a better/ accurate way to determine CO2 concentration. thank you
I need to prepare CuO NPs using green chemistry. How can I know if a certain plant has not been used for CuO NPs synthesis. Is there any data base site or we should simply search in google.
Dear researchers,
The surfactants are extracted from the nature are more useful. Can any one introduce an available cheap (herbal) surfactant to produce water/oil emulsion?
Thank you so much.
Regards
Foroogh
Dear all,
Please enlist me the most appropriate solvents for dissolving metal oxide nanoparticles synthesized through green chemistry routes? Thanks
We will be highly thankful if scientist community help us to enhance the stability of our fabricated nickel nanoparticles using green chemistry approach. Please suggest which type of specific substances will be helpful for increasing the stability of Nickel nanoparticles.
In a bid to avoid environmentally hazardous effluent discharges from the pulping process, benign solvents are best used. Ionic solvents present the best options at the moment consequently the search for ionic/green solvents for pulping of waste material such as rice husk.
I want to know, if I prepared polymer-supported photocatalyst, Amberlite resin or Dowex resin would be better (This would be according to the chemical structure, pore size, surface area or the used substrate)?
Thermochemical treatment of biomass produces bio-oil which is more oxygenated and is quite unstable. How can it be converted to simpler aromatics?
Can anyone suggest online site for downloading chemistry text book and presentations for free? now a days most of the site ask money for getting e book. If possible please give the link for those site...
It is known that the complexation of a quaternary ammonium salt with a metal salt or hydrogen bond donor (HBD) resulting in DES formation. The charge delocalization occurring through hydrogen bonding between for example a halide ion and the hydrogen-donor moiety is responsible for the decrease in the melting point of the mixture relative to the melting points of the individual components. However the DES is not form between TEAI and Glycerol at 80 C and in varying molar ratios i.e., 1:2, 1.4, 1:6 and 1:8. I would like to know the reason why DES is not formed in this case.
I need to advanced method and very easy to prepare chitosan nanoparticles by green chemistry.
DES are often seen as green solvents, however, their chemistry and mechanism is still scarcely available. How do they posses lower melting and freezing tendencies in-comparisons to their original constituents? And what are their potential applications in industry?
What are the recent advancements to dissolve hydrogen in water?
I couldn't find any recent (2014-2015) articles on dissolving hydrogen in water. It would be great if someone could help me in this regard.
I want to couple furfuryl alcohol and Succinic anhydride. They often use DMAP as catalyst, but I'm searching for an alternative.
I need to know why the use of ILs are consider as green chemistry?by examples,
Hi all,
I've been having trouble increasing the efficiency of a couple of primers using a standard curve.
- The standard curve is built with log10 dilutions of plasmid into which the amplicon was cloned.
- The program is as follows: 2min 95C - 40 cycles of [15s 95C - 15s 58C - 20s 72C] - final stage for melt curve.
- Gradient PCR shows that optimal temperatures are between 56C and 62C.
- Different combinations of primer concentrations showed that the lowest Ct was achieved by 500 nM of each primer.
- I'm using a new kit for SYBR Green chemistry.
- Most of the time, the R2 of the standard curve is 0.95-0.99.
- Melt curve is clean, with only one peak for the amplicon.
BUT NEVERTHELESS, THE EFFICIENCY IS AROUND 70-90% (depending of the conditions assayed) but never higher.
### LESS IMPORTANTLY, BECAUSE I'M ONLY WORRYING ABOUT THIS RECENTLY: Substraction baseline is set manually between 3 and 10 cycles (a couple of cycles before the start of the 1st amplification). Threshold is set manually of the DeltaRn vs Log Cycles, around the middle between the plateau and the noise.
##Do you think that is the fact that I'm using separate annealing and extension temperatures, instead of a single step at 60C?
##Could be a problem solved by increasing the concentration of Mg2+?
***What am I missing here?***
I repeated this so many times... And always gives me "non-decent" efficiencies (70-90%).
How can I stop water molecules that are generated during a course of an Organic Synthesis to stop interfering and forming further by products. I dont want to use molecular sieves. I want to use green chemistry options..
CALL for PAPERS!!
A Thematic Special Issue titled as "Green Chemistry Practice for Sustainable Future" has been designed for the Elsevier Scopus-Indexed well-established Journal (Rasayan Journal of Chemistry) under my guest editor-ship! Call for articles has now been launched from the journal editor-in-chief. Pl. visit the link for details:
Being guest editor of this specially designed hot issue, I do welcome your supports and submissions. Thanks and regards, Goutam Brahmachari (Guest editor). For any inquiry, pl. feel free to write at brahmg2001@gmail.com / goutam.brahmachari@visva-bharati.ac.in
Can you considered the science of nanomaterials in green chemistry
Might it be related to size and water filtration?
Substitution of free formaldehyde with substances capable of
releasing formaldehyde in-situ is possible
• Trioxane
• Urotropine
• Melamine resins
BUT: necessity of either catalysts or higher temperatures to
decompose those substances in order to release formaldehyde?
Is there any substances to replace formaldehyde?
Can somebody suggest the small experiment regarding green chemistry and environmental pollution?
I am performing GMO analysis in plant samples. I am getting positive amplification in non-template control (water). I am using molecular grade water, sterile and filter tips. I have even ordered new set of kit for detection of GMO, but still the problem remains. I have changed everything from tips to PCR consumable to water, but still the problem exist. I am using SYBR green based kit, the CT value of NTC is around 23-25, I have reduced the primer concentrations to avoid the chances of primer-dimer, checked melt curve and primer-dimer is not the problem.
I am cleaning pipettes with bleach regularly, also I am using separate work place and pipettes for preparation of master mixes, addition of DNA and PCR. Moreover, many times I could not see any amplification in positive control but NTC shows very prominent amplification. Please suggest what can I do to solve this issue.
The attainment of sustainability requires adherence to some important aspects like human welfare, natural resource management, economic development, food and energy security and environmental sustainability. How Green Chemistry can address these concerns for a sustainable future of the planet Earth.
Scion has a cutting-edge research on extractives from trees. My area of interest is the economics of the different extraction methods, green field investment and bolt-on solution comparisons, and identifying the key parameters.
I am looking for benchmarks and collaboration.
Hello , I would like to ask for your help please. I do my research on the synthesis of mesoporous materials and their application with the adsorption of pollutants (pesticides) but after several experiments carried out in the laboratory on this subject, I found that mesoporous materials do not adsorb pesticides The more polar ones such as methomyl and cymoxanil for example while all my work is based on this, someone can propose me a grouping or a precursor which can be useful for the functionalization of the mesoporous materials of the MSU family with to these Chemical ances, please it is urgent, thank you in advance. my greetings
after extraction of cellulose from natural sources, I need to find an easy way for convert this cellulosic pulp into nano-cellulose material
Dear Research Partners, How are you all so far? I have some questions for you please: Can a coffee husk based activated carbon be used for de colorization or de-pigmentation of herbal extracts in liquid form?....Is the process of preparing activated carbon from coffee husk an expensive process? Is there any paper or patent you know on the preparation of activated carbon from coffee husk for the same de pigmentation purpose? Hoping to hear from you ... Thanks very much
reaction of phenol with arylboronic acid using copper (I) as catalyst to produce 2-phenoxyphenol
I will be very grateful for any publication on the effect of acetic acid on agricultural wastes components.