Navigation Links
Tiny tubes and rods show promise as catalysts, sunscreen
Date:9/10/2007

UPTON, NY - Scientists at the U.S. Department of Energy's Brookhaven National Laboratory have developed new ways to make or modify nanorods and nanotubes of titanium oxide, a material used in a variety of industrial and medical applications. The methods and new titanium oxide materials may lead to improved catalysts for hydrogen production, more efficient solar cells, and more protective sunscreens. The research is published in two papers now available online, one in Advanced Materials (August 22, 2007), and the other in the Journal of Physical Chemistry (September 8, 2007).

In the first study, the scientists enhanced the ability of titanium oxide to absorb light.

"Titanium dioxide's ability to absorb light is one the main reasons it is so useful in industrial and medical applications," said Wei-Qiang Han, a scientist at Brookhaven's Center for Functional Nanomaterials (CFN) and lead author on both papers. It is used as a photocatalyst for converting sunlight to electricity in solar cells and also has applications in the production of hydrogen, in gas sensors, in batteries, and in using sunlight to degrade some environmental contaminants. It is also a common ingredient in sunscreen.

Many scientists have explored ways to improve the light-absorbing capability of titanium oxide, for example, by "doping" the material with added metals. Han and his coworkers took a new approach. They enhanced the material's light-absorption capability by simply introducing nanocavities, completely enclosed pockets measuring billionths of a meter within the 100-nanometer-diameter solid titanium oxide rods.

The resulting nanocavity-filled titanium oxide nanorods were 25 percent more efficient at absorbing certain wavelengths of ultraviolet A (UVA) and ultraviolet B (UVB) solar radiation than titanium oxide without nanocavities.

"Our research demonstrates that titanium oxide nanorods with nanocavities can dramatically improve the absorpti
'/>"/>

Contact: Karen McNulty Walsh
kmcnulty@bnl.gov
631-344-8350
DOE/Brookhaven National Laboratory
Source:Eurekalert

Page: 1 2

Related biology news :

1. Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer
2. Motorola researchers develop selective sensors based on carbon nanotubes
3. Gadonanotubes greatly outperform existing MRI contrast agents
4. Nanotubes inspire new technique for healing broken bones
5. Modifications render carbon nanotubes nontoxic
6. Carbon nanotubes that detect disease-causing mutations developed by Pitt researcher
7. Detection of DNA on nanotubes offers new sensing, sequencing technologies
8. Stable polymer nanotubes may have a biotech future
9. Nanotubes used for first time to send signals to nerve cells
10. Pure carbon nanotubes pass first in vivo test
11. Neural networking nanotubes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/18/2014)... , Nov. 17, 2014   ... and EMC collaborate to develop The Partners Data ... , The Partners Data Lake will allow researcher ... improve diagnostics, treatment and the lives of patients ... research and clinical activities across the Partners system, ...
(Date:11/18/2014)... Nov. 18, 2014   EyeLock Inc. , ... and MorphoTrust USA (Safran), a leading ... announced a strategic partnership to offer comprehensive biometric ... administration (MVA), airport screening and financial services markets. ... MorphoTrust serves consumers through a nationwide network of ...
(Date:11/12/2014)... , Nov. 12, 2014 Crossmatch™, a ... that its U.are.U ® fingerprint readers have been ... in Central Mexico . The bakery ... to eliminate payroll issues caused by employees clocking in ... the U.are.U fingerprint readers, Montparnasse relied on paper timecards ...
Breaking Biology News(10 mins):Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2
... The first stage of the U.S. Department of Defense-funded ... in the transmission of infectious pathogens has been completed ... session at the Interscience Conference on Antimicrobial Agents and ... The data presented describe the first results of ...
... Darrel Jenerette, a landscape ecologist at UC Riverside, is ... will be investigating human vulnerability to deadly heat exposure. ... heat island" a metropolitan area that is much warmer ... risks, as well as how human decisions lead to this ...
... division mechanism has been discovered in a microorganism that thrives ... into key processes in human cells, and in a better ... The study is published today in the online version the ... research group at the Department of Molecular Evolution at Uppsala ...
Cached Biology News:UC Riverside scientist to explore how vegetation affects urban heat islands 2New cell division mechanism discovered 2
(Date:12/19/2014)...   ISN has released its third annual ... publication series. With data aggregated from over eight ... within its online contractor management platform, ISNetworld, this three-part ... (KPI) statistics. The Contractor ... is available in two industry specific volumes: Oil ...
(Date:12/17/2014)... 17, 2014 Achim Noack has been ... Stoller Group. In this position, Noack will assist Jerry ... matters, develop marketing strategy and supervise global marketing management ... “Achim has tremendous knowledge and experience in the crop ... “His experience and innovative thinking will be a great ...
(Date:12/17/2014)... 2014 Gene synthesis and bioengineering ... entered into a technology access and services agreement ... DNA2.0’s proprietary protein engineering technology, known as “ProteinGPS®” ... are extremely excited that the global leader ADM ... proprietary bioengineering technology has now been validated through ...
(Date:12/17/2014)... , Dec. 17, 2014 Tigercat Pharma, ... 2 study evaluating the investigational oral NK-1 receptor ... with severe, chronic itch who are unresponsive or ... including topical steroids and antihistamines. ... Visual Analog Scale (VAS) itch score from baseline, ...
Breaking Biology Technology:ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 2ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 3Achim Noack Joins Stoller Group as Global Vice President of Marketing and Administration 2ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 3Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 4
... 29 ImQuest BioSciences and Arisyn Therapeutics jointly ... strategic drug development partnership to provide support necessary ... the treatment of infectious disease and cancer. Arisyn ... of inhibitors with demonstrated preclinical efficacy against HIV, ...
... - Strong Focus on the Markets of ... General Meeting Passes Dividend of EUR0.40 per Share , ... an unchanged,dividend of EUR0.40 per share following the record year in ... year 2008 with record results.,Gerresheimer achieved sales of EUR1.06 billion (prior ...
... Survival and Biomarker Data for Ipilimumab to be Presented ... MEDX ) announced today that the following clinical ... well as for an anti-PD-1 antibody for cancer treatment, ... at the Annual Meeting of the American Society of ...
Cached Biology Technology:ImQuest BioSciences and Arisyn Therapeutics Announce Strategic Partnership to Develop Infectious Disease and Cancer Drugs 22008 a Record Year for Gerresheimer 2Medarex Announces Presentations at Annual Meeting of the American Society of Clinical Oncology 2Medarex Announces Presentations at Annual Meeting of the American Society of Clinical Oncology 3Medarex Announces Presentations at Annual Meeting of the American Society of Clinical Oncology 4