Air pollution is a major health problem in the United States and throughout the world. An estimated 3 million people die each year from the effects of air pollutants. Medical researchers have linked high levels of air pollution to illnesses and diseases. These health problems
Nanotechnology for a Sustainable Environment 177 Table 8.2 Applications of Titanium Oxide (TiO2) as a Photocatalyst
• Self-cleaning and bacterial degradation for glass products and for floors and walls in hospitals.
• Water cleaning capacity and for purification of soil.
• Air cleaning effects for pavement blocks and sidewalks.
include asthma, allergies, emphysema, chronic bronchitis, lung cancer, and heart attacks. Pollutants in the air cost citizens billions of dollars every year in health care and lost time at work. In a major health study conducted by the American Lung Association, about 50 percent of the United States population is breathing unhealthy amounts of air pollution. Other countries suffer from air pollution too.
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