Dedicated to David Suzuki, and THRC’s Green Technical Textile Knowledge Network Initiative.
Nature has blessed our environment with abundant resources and green energy. Can we harvest, harness, and sustain these free energies to foster innovative solutions for cleaning our environment? Yes, we can. How? Imagine a green engineering solution that cleans air pollution and fosters a sustainable, clean environment. Imagine a true textile substrate integrated with green nanomaterials that continuously purifies the air and environment, providing us with the comfort and quality lifestyle we envision.
Plant chlorophyll, a typical natural photocatalyst, captures sunlight to convert water (H2O) and carbon dioxide (CO2) into oxygen (O2) and glucose. By contrast, in the presence of light and water, the photocatalyst nTiO2 creates strong oxidizing agents and electron holes to break down organic matter into CO2 and H2O as shown in the figure..
-
-
Reduction Reaction: O2+e– → O2– Superoxide anion
-
-
-
Oxidation Reaction: H2O+h+ → -OH Hydroxyl radical
-
Disinfection by nTiO2 is 3x stronger than Cl2 & 1.5x stronger than O3
Wavelength of light required for Photo-excitation ʎ = Planck’s Constant, h:1240/Band Gap Energy: 3.2eV = 388nm
- Rutile: Tetragonal crystal system, Band gap: 3.0eV. Less reduction power. More stable at high temperature. Density: 4.2743. UV resistance. Blocks sunlight
- Anatase: Tetragonal crystal system, Band gap: 3.2eV. More reduction power. More stable at low temperature. Density: 3.895. Photocatalyst
- Brookite: Density: 4.123
- Self-cleaning
- Air purification
- Anti-bacterial, Anti-fungi, and Anti-mold
- Super hydrophilicity
- Antistatic surface
- UV resistance
- Easy-cleaning
- Keeps the surface clean
- Purifies air pollutants, e.g. VOCs, NOx, Formaldehyde, Benzene
- Decomposes bacteria and viruses on the surface and in the air
- Restrains growth of mildew, mold, fungi, or algae
- Decomposes organic pollutants on the surface
- Protects the surface from dust, dirt, and air pollutant damage
- Absorbs UV rays from the sun and protects the surface from UV damage
-
Micro-organisms carry ‘–ve’ charge.
-
nTiO2 surfaces carry ‘+ve’ charge.
-
•Photo-excitation
-
•ElectroMagnetic Attraction
-
•Oxidation
-
•Decomposition
Click on the links below for in-depth information. Explore and enjoy!
Interesting Links:
- Guide of the photocatalyst
- Guide of the photocatalyst
- Green Millennium Photocatalyst Solar Clean Technology
- Green Millennium Self Cleaning Coating …
- ClenAir TiO2 anion light bulb
- Photocatalytic activity of fabric coated with nano TiO2
- TiO2 Fundamental & Applications.wmv
- (WO/2010/078649) SELF-CLEANING COATINGS
- Synthesis of TiO2-Polymer Nanocomposite in Supercritical CO2 via …
- News on Solar Fabrics and diatom solar cells
- Nanotechnology and photovoltaics
University of Toronto – Professor Ted Sargent
Make a Solar Cell – TiO2/Raspberry based
- Microsoft PowerPoint – Photocatalysis 1
- Textiles of the future
- Super-threads: new e-fibres for woven smart textiles :: MaterialsViews
- http://sciencelinks.jp/j-east/article/200208/000020020802A0206498.php
- ‘Dirty Dozen’ cosmetic chemicals to avoid
- What you need to know about toxics in your cosmetic products
- Graphene tackles arsenic
- High-speed filter uses electrified nanostructures to purify water at low cost
- Electrified nano filter promises to cut costs for clean drinking water
- Bamboo Benefit | Bamboo Factor
- It’s proven, bamboo clothes reduce the risk of skin cancers!
- Bamboo puts others in the shade – The Age newspaper
- Slip, slap, slop on a product made of bamboo? Deakin research gives Aussies edge under the sun
- Bamboo the answer to many questions
- Dream Journey of the Jute Genome
- Massoud Amin: A Smart Grid
- Yasser Ansari: Networked Organisms
- Electrified nano filter promises to cut costs for clean drinking water
- High-speed filter uses electrified nanostructures to purify water at low cost
- HOME (English with subtitles)
- Prothom Alo – Bangladeshi success in inventing the most efficient solar cell
- Prothom Alo | Most popular Bangla daily newspaper – Nobel win at 36
- Prothom Alo – The magical melody of vegetables
-
http://www.hindawi.com/journals/ijp/2010/764870.html
http://www.gensnano.com/articles/200303_Space_Grant.pdf
http://www.gensnano.com/articles/ProjectPhotocatalyticCoating.pdf
http://www.ualberta.ca/~mrscott/host/hw/400/New/Removal%20of%20VOCs%20by%20phttp://www.ualberta.ca/~mrscott/host/hw/400/New/Removal%20of%20VOCs%20by%20photocatalysis%20process.pdf
http://www.springerlink.com/content/055528h1023857nn/
http://www.scientific.net/AMR.123-125.919
http://www.epd.gov.hk/epd/tc_chi/environmentinhk/air/studyrpts/files/finaliz
ed_technical_report.pdf
Featured Insights:
2010 Self-Cleaning Coatings, P A Carpentier, K D Burgess, WO/210/078649, PCT/CA2010/000009, Jul 15
2010 Extreme Engineered Materials Design, S Islam, Textile, biggani.org, Jul10
2010 Super Strong NanoCrystalline Cellulose Synthesis: Challenges and Opportunities, S Islam, Nanotechnology, biggani.org, Jul 04
2010 Progress and Perspectives in the Carbon Nanotube World, M Endo, AZoNano.com, Jun 23
2009 Nanoparticles Used in Common Household Items Cause Genetic Damage in Mice, Science Daily, Nov 17
2007 Bioactive Silk Proteins as Geotextile Substrates, M Tsukada, S Islam, Y Ishiguro, Textiles & Clothing, Jan-Mar 5-6
2006 Methods and apparatus for spinning spider silk protein, S Islam et al., USP 7,057,023 Jun 6
2005 TiO2 Photocatalysis: A Historical Overview and Future Prospects, K Hashimoto, H Irie, A Fujishima, Japanese Journal of Applied Physics, Vol. 44, No. 12, 8269-8285
2005 Value-added Textile Technology, S Islam, Textile Excellence J., Anniversary Issue, Jul. 3(1) 55-56
2005 Photocatalyst technology adds value to fabric, K Tagawa, Fabric Architecture, May
2005 Titanium dioxide photocatalysis: present situation and future approaches, A Fujishima, X Zhang, Elsevier, Feb 2, 750-760
2004 Enhancing Sorption Properties of Natural Fibrous Protein Substrates. Part I: Absorption of malodorous gases, M Tsukada, H Katoh, S Islam, N Kasai, Text. J., 121(6) 48-50
2004 Antibiotic Silk Substrates for Healthcare, M Tsukada, G Shen, S Islam, Text. J. 121(5) 47-49
2003 Process of producing a titanium oxide-forming solution and a dispersion with crystalline titanium oxide particles, I Hiromichi, USP 6,602,918, Aug 5
2002 Photocatalytic body and method for making same, I Hiromichi, USP 6,429,169, Aug 6
1999 Suppression of Surface Recombination on TiO2 Anatase Photocatalysts in Aqueous Solutions Containing Alcohol, O A Semenikhin, V E Kazarinov, L Jiang, K Hashimoto, A Fujishima, American Chemical Society, May 06, 3731-3737
Picture Credit: courtesy of medilamp.com
Stay tuned. More to come….
Acknowledgements: TexTek Solutions :: MW Canada Material Innovations.
Shafiul Islam
Email: [email protected] :: Web: textek.weebly.com :: Canada :: www.linkedin.com/in/shafiul2009
এ প্রবন্ধটা বাংলাতে হলে মনে হয় ভাল হবে। আশা করি সম্পূর্ণ প্রবন্ধটা বাংলাতে পাব। ইংরেজিতে খুব সহজে অনেক প্রবন্ধ পাওয়া যায় তাই আপনার এই ওয়েব সাইট এ বাংলাতেই সব প্রবন্ধ আশা করেছিলাম।
সুজন চৌধুরী
গবেষক-ফুয়েল সেল ও ন্যানোপ্রযুক্তি
সুজন চৌধুরী,
Thanks for your thoughts. Unfortunately, I am not fluent in Bengali typing. Also, my time is fairly limited beyond my research commitment. Hope you will excuse me until I can enhance my Bengali typing skills, that may take a while. Shuvechha.
🙂
শফিউল
শফিউল ইসলাম(Shafiul Islam) জানিয়েছেন যে তিনি বাংলা টাইপিং-এ তেমন সাবলীল নন তাই তাঁকে অনুরোধ করব নীচের ব্লগে একটি ফন্ট এবং কিবোর্ড পাবার লিংক দেওয়া আছে যেটা দুদিন আধ ঘণ্টা অভ্যাস করলে আশা করি বাংলা সহজে লিখতে পারবেন ”বাংলাইন্টারন্যাশনাল“ http://banglainternational.blogspot.com/
আমরা তাঁর মূল্যবান লেখা বাংলাতেই পেতে চাই ইংরেজিতে লেখা দেখলেই আমরা সাধারণভাবে তা এড়িয়ে চলি, কিন্তু তা করলে আমরা অনেক জিনিস হারাব, বিশেষ করে যে লেখাগুলি পড়া খুবই দরকার তাই যাঁরা গুরুত্বপূর্ণ লেখা লিখবেন তাঁরা আমাদের মতো সাধারণ মানুষের জন্য যতটুকু পারেন দয়া করে বাংলাতে লিখুন আমরা পড়ে সমৃদ্ধ হই
মনোজকুমার দ. গিরিশ
কোলকাতা
মনোজকুমার দ. গিরিশ,
Many thanks for your thought and Bengali typing learning link. I will try. I had a column in Bengali at biggani.org. We lost it during restructuring our site. Further, I have to think of my global readers who do not know Bengali.
Shuvarthee,
🙂
শফিউল
Thanks for sharing.
Thanks for sharing.