中文摘要：

纳米零价铁比表面积大、表面能高、还原性强,对环境污染物具有良好的去除效率,是目前国内外研究的热点。对纳米零价铁的常规物理、化学制备方法及一些新型制备方法进行了详细介绍,总结了纳米零价铁在环境领域的最新应用进展。重点探讨了提高纳米零价铁反应效率而采用的最新方法和技术,如表面修饰（表面改性、固体负载、纳米双金属）、纳米零价铁与芬顿反应、超声、电场、磁场等技术应用耦合等。提出了纳米零价铁在环境领域中尚存在的科学问题,并对该技术的应用前景进行了展望。

英文摘要：

With a large specific surface area, high surface energy and strong reducibility, nanoscale zero-valent iron （nZVI） has been widely used in the field of environmental area. This review introduces regular physical methods, chemical methods and some special preparation methods, also summarizes the application progress of nanometer zero-valent iron in the environment. This paper mainly explores the newest technology to improve the efficiency of nZVI reaction, such as modification （surface modification, solid load, bimetal）, combination with Fenton reaction, ultrasonic, electric field and magnetic field. Meanwhile, it puts forward several scientific issues that need to be resolved, and future application prospects in environment field.