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东北煤油大学研发新光催化剂 将污水变废为宝

宣布工夫:2018-08-10内容泉源:VOA英语学习网

A research team from Southwest Petroleum University in Sichuan Province has developed a low-cost, high-efficiency photocatalyst that uses visible light to purify water.

日前,四川省东北煤油大学的一个研讨小组研发了一种低本钱、高服从的光催化剂,这种催化剂可以应用可见光来污染水质。

A photocatalyst is a substance that can help cause a light-catalyzed reaction, such as chlorophyll capturing sunlight to turn water and carbon dioxide into oxygen and glucose in photosynthesis.

光催化剂是一种可以可以惹起光催化反响的物质,比方叶绿素可以捕获阳光,在光协作用中将水和二氧化碳转化为氧气和葡萄糖。

Ordinary photocatalysts can decompose organic pollutants in sewage under ultraviolet light, which, however, only accounts for four percent of the solar spectrum, making this type of sewage treatment costly and preventing it from widespread application.

平凡的光催化剂可以在紫外光下剖析无机净化物,但是,紫外光只占太阳光谱的百分之四,使得这种污水处置的本钱很高,并障碍了它的普遍使用。

The research team of eight doctoral students turned to visible light, a spectrum accounting for 43 percent of sunlight. After four months of research, they developed a new photocatalyst Reac-O2 with good visible light absorption performance.

于是,由八名博士生构成的这个研讨小组将目的转向了可见光,这种光谱占到了43%。颠末四个月的研讨,他们开辟出了一种具有精良可见光吸取功能的新型光催化剂Reac-O2。

Reac-O2 can produce reactive oxygen species, purifying water by degrading organic pollutants into non- or low-toxic small-molecule substances.

Reac-O2可以发生活性氧,经过将无机净化物降解成无毒或低毒的小分子物质来污染水。

In experiments, the new photocatalyst performed more efficiently than traditional sewage treatment agents.

在实行中,新型的光催化剂比传统的污水处置剂更高效。

"The amount of water that used to be purified with one hour now can be purified in just 30 minutes," said Shi Xian, head of the research team.

研讨小组担任人石晛表现:“过来花一小时才干污染的水,如今只需30分钟。”

Reac-O2 can be recycled at least 30 times and maintain a degradation rate of 85 percent.

Reac-O2可以再循环至多30次,并坚持85%的降解率。

Using Reac-O2 to purify a ton of sewage will cost five yuan (0.73 US dollars) while using traditional technology costs 17 yuan, said Shi.

石晛称,运用Reac-O2污染一吨污水需求5元(0.73美元),而运用传统技能则需求17元。

来自:千亿国际文娱网页版_千亿国际文娱|www.qy449.com 文章地点: http://www.tingvoa.com/html/20180810/580566.html