Quantifying the physcio-chemical characteristics of cerium oxide nanoparticles; a preliminary for ecotoxicological investigations

量化氧化铈纳米颗粒的物理化学特性；

• 批准号: NE/G010641/1
• 负责人: Jamie Lead
• 金额: $ 6.44万
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FG010641%2F1
• 关键词: Quantifying; physcio; chemical; characteristics; cerium

Manufactured nanoparticles (NPs) can be defined as material purposefully produced by human activity which is between 1 and 100 nm (1 nm is a thousand millionth of a metre). In the last 3-5 years, there has been intense interest and research in the environmental effects of NPs because of our limited knowledge of their harmful effects in the environment and due to the large and increasing scale of the nanotechnology industry. The NERC has recognized this by making Environmental Nanoscience one of seven key areas of concern in its Environment, Pollution and Human Health theme. In addition, this concern has been highlighted by reports from many learned bodies including the Royal Society and Royal Academy of Engineering report (http://www.nanotec.org.uk/finalReport.htm) published in 2004. Worldwide government R&D spending in 2005 on nanotechnology was estimated as ca US$ 4100 million (Roco, 2005) with equivalent sums coming from private sources, and which is increasing year on year. Global markets have been estimated as ca £2 trillion by 2014 and nanotechnology products are now available in an enormous range of consumer goods (fabrics, cosmetics etc) and are used in a range of commercial and industrial processes (such as environmental remediation). It is clear that nanoscience and nanotechnology are immensely important activities, both economically and socially, and will become more so in the near future. Nevertheless, it is also clear that given the scale of the increasing usage and the potential toxicity of these NPs, adverse environmental and human health effects are likely. Cerium oxide is one type of nanoparticle which is used in a range of products and processes and which is potentially beneficial or harmful in the environment but our knowledge of what parameters make them harmful or beneficial is poor. This project will produce tightly controlled NPs which will be characterised thoroughly in terms of their physical and chemical characteristics including size, oxidation state, aggregation behaviour, surface properties. All of these parameters may affect their environmental effects. The NPs will be available for future projects investigating the ecotoxicological effects of NPs in bacteria, algae, invertebrates and fish, but not performed directly in this project.

人造纳米颗粒 (NP) 可以定义为由人类活动有目的地生产的 1 至 100 纳米（1 纳米是百万分之一米）的材料。在过去的 3-5 年中，人们对纳米颗粒产生了浓厚的兴趣和研究。由于我们对其对环境的有害影响了解有限，并且由于纳米技术产业的规模不断扩大，NERC 认识到了这一点，将环境纳米科学列为七个关键关注领域之一。此外，许多学术机构的报告也强调了这一问题，包括英国皇家学会和英国皇家工程院的报告 (http://www.nanotec.org.uk/finalReport.htm)。发表于 2004 年。2005 年全球政府在纳米技术方面的研发支出估计约为 41 亿美元（Roco，2005 年），同等金额来自私人来源，并且逐年增加。到 2014 年，全球市场估计将达到约 2 万亿英镑，纳米技术产品现已应用于各种消费品（织物、化妆品等）中，并用于一系列商业和工业过程（例如环境修复）。显然，纳米科学和纳米技术在经济和社会方面都是极其重要的活动，并且在不久的将来将变得更加重要。然而，考虑到这些纳米粒子的使用规模不断增加和潜在的毒性，也很明显会产生不利影响。环境的氧化铈是一种纳米颗粒，可用于多种产品和工艺，对环境可能有益或有害，但我们对哪些参数使其有害或有益的了解很少。将生产严格控制的纳米粒子，这些纳米粒子将在其物理和化学特性方面得到彻底的表征，包括尺寸、氧化态、聚集行为、表面特性，所有这些参数都可能影响其环境影响。生态毒理学纳米颗粒对细菌、藻类、无脊椎动物和鱼类的影响，但在该项目中没有直接进行。

项目成果

Characterisation of structural and surface speciation of representative commercially available cerium oxide nanoparticles

代表性市售氧化铈纳米颗粒的结构和表面形态表征

• DOI: http://dx.10.1071/en10003
• 发表时间: 2010
• 期刊: Environmental Chemistry
• 影响因子: 4.3
• 作者: Baalousha M

High Resolution STEM-EELS Study of Silver Nanoparticles Exposed to Light and Humic Substances.

暴露于光和腐殖质的银纳米颗粒的高分辨率 STEM-EELS 研究。

• DOI: http://dx.10.1021/acs.est.5b04088
• 发表时间: 2016
• 期刊: Environmental science & technology
• 影响因子: 11.4
• 作者: Römer I