ADM-201 dump PMP dumps pdf SSCP exam materials CBAP exam sample questions

清除放射性废物的微型机器人 – 译学馆
未登陆,请登陆后再发表信息
最新评论 (0)
播放视频

清除放射性废物的微型机器人

These microbots clean up radioactive waste - Headline Science

Most of the world’s energy comes from fossil fuels.
世界上的能量多来自化石燃料
However, power plants running on coal and natural gas release greenhouse gases and other
然而 煤和天然气发电厂会排放温室气体
pollutants harmful to human health and the environment.
及其他对健康与环境有害的污染物
That’s why scientists are exploring alternative energy sources, and some experts say that
因此 科学家们正在寻找替代能源
nuclear power is the most efficient way to meet the world’s growing energy demands
一些专家认为核能最能有效满足全球日益增长的能量需求
without generating greenhouse gases.
也不产生温室气体
But scientists need a way to clean up radioactive isotopes, both from wastewater generated by
问题在于 如何清理发电厂废水
nuclear power plants, and from the environment in case of a spill.
和外泄到环境中的放射性元素污染
Now, researchers reporting in ACS Nano have developed tiny, self-propelled robots that
据《ACS纳米》期刊报道 已发明一种自驱微型机器人
remove radioactive uranium from simulated wastewater.
可以除去废水中的放射性铀
In the Chernobyl and Fukushima nuclear plant disasters, radioactive material was accidentally
在切尔诺贝利和日本福岛核事故中
released into the environment, threatening humans and wildlife.
放射性元素进入大气 威胁人和野生动物的生命
Scientists have developed methods to remove radioactive uranium from water, but they have
科学家们已找到去除水中放射性铀的方法
limitations.
但有局限性
One of the most promising recent approaches is the use of metal-organic frameworks, or
近期最有效的方法是 用金属有机框架材料
MOF.
简称MOF
MOFs are compounds that can trap substances, including radioactive uranium, within their
MOF是有包裹性的混合物 可以将放射性铀
hollow structures.
困在其中空结构中
Martin Pumera and colleagues wanted to add a micromotor to a rod-shaped MOF called ZIF-8
Martin Pumera教授的团队 想在杆状MOF中安装一个ZIP-8微型马达
to see if it could quickly clean up radioactive waste.
看是否能快速清除放射性污染物
To make their self-propelled microbots, the researchers designed ZIF-8 rods with diameters
为制作这个微型机器人 ZIF-8杆状物的直径
about 1/15 that of a human hair.
只有头发直径的1/15
They modified the rods to stabilize their structures and make them magnetic.
研究者调整杆状物以稳定结构 使其有磁性
This way, the researchers could use magnets to collect the microbots after they had done
这样在完成清理之后 就可以用磁铁回收
their jobs.
微型机器人
Here, they’re using magnets to control the rods’ motion.
如图 他们正在用磁铁控制杆状物
To give the microbots their own little motors, the team placed catalytic platinum nanoparticles
为使微型机器人有马达 研究者在一端放入了
on one end.
催化的铂纳米粒子
When they added a small amount of hydrogen peroxide to the water, the platinum converted
在水中加入少量双氧水后 铂将“燃料”变为氧气
this “fuel” into oxygen bubbles, which propelled the microbots at a speed of about
推动微型机器人
60 times their own length per second.
以每秒60倍自身长的速度前进
In simulated radioactive wastewater, the microbots removed 96% of the uranium in an hour.
在激活的放射性污水中 96%的铀在一小时内被除去
The team collected the uranium-loaded rods with a magnet and stripped off the uranium,
然后 用磁铁回收装满铀的杆状物 并卸载铀
allowing the tiny robots to be recycled.
使微型机器人得以再次利用

发表评论

译制信息
视频概述

科学家已研制出一种自驱式微型机器人,可清除核污染废水中的放射性铀,并且此机器人可回收再利用。

听录译者

收集自网络

翻译译者

YXG-e4e4a

审核员

审核员Y

视频来源

https://www.youtube.com/watch?v=TRhVaUNOBhU

相关推荐