搜索结果: 1-15 共查到“国际动态 催化化学”相关记录17条 . 查询时间(2.838 秒)
【北京大学物理化学学术报告】引领低碳时代的碳一化学：新反应，新催化剂，新装置（图）
低碳 碳一化学 北大
2023/6/20
【北京大学物理化学学术报告】引领低碳时代的碳一化学：新反应，新催化剂，新装置
英国发现纳米波纹石墨烯具有强大催化效果
英国 纳米波纹 石墨烯 催化效果
2024/1/17
由英国国家石墨烯研究所（NGI）科研人员领导的国际科研团队发现，石墨烯中的纳米波纹可以使其成为一种强大的催化剂，加速氢分解，效果类似于最好的金属基催化剂。研究发表在《美国国家科学院院刊》（PNAS）上。
将低密度、可持续的太阳能高效转化为可存储的化学能是发展可再生能源的重要途径。然而，光生载流子的复合严重限制了人工光催化体系的转化效率，如何实现电子空穴对分离的最大化成为提高光催化效率的重要挑战。
以半导体及其衍生物为媒介的光催化技术能够在太阳能驱动下通过氧化还原作用将污染物降解为CO2、H2O等无害物质，如何解决光生电子和空穴在时间尺度上的不匹配问题是突破多相光催化技术瓶颈的关键。
近日，上海理工大学光电信息与计算机工程学院庄松林院士、张大伟教授领导的超精密光学制造创新团队姚良涛博士在国际权威期刊《材料科学与技术（英文版）》（JOURNAL OF MATERIALS SCIENCE&TECHNOLOGY）（SCI一区，国际TOP期刊，影响因子10.3）上发表了题为“负载有金属Bi修饰的BixTiyOz/TiO2柔性静电纺碳纳米纤维及其在模拟太阳光下降解有机污染物的应用”（“E...
在单个催化步骤中二氧化硫到元素硫的低温转化仍然难以实现。据物理学家组织网10月28日最新消息，美国宾夕法尼亚州立大学研究人员研究出一步式低温等离子体催化二氧化硫工艺，该工艺可实现在低温下将二氧化硫直接还原为元素硫。据介绍，这项技术利于能源节约和环境保护。该研究发表在著名期刊《ACS催化》和最新一期的《催化》杂志上。“二氧化硫会引起诸如酸雨之类的严重环境问题，并且可能导致海洋酸化，”宾夕法尼亚州立大...
Researchers Inadvertently Boost Surface Area of Nickel Nanoparticles for Catalysis（图）
Researchers Boost Surface Area Nickel Nanoparticles Catalysis
2017/12/18
Ni nanoparticles (NPs) catalyze many chemical reactions, in which they can become contaminated or agglomerate, resulting in poorer performance. We report deposition of silica (SiO2) onto Ni NPs from t...
New Findings Boost Promise of Molybdenum Sulfide for Hydrogen Catalysis
Boost Promise Molybdenum Sulfide Hydrogen Catalysis
2016/12/13
MoS2 presents a promising low-cost catalyst for the hydrogen evolution reaction (HER), but the understanding about its active sites has remained to be limited. Here we present an unambiguous study for...
Chemists at Princeton have developed a new chemical method to introduce valuable alkenes into simple hydrocarbon molecules, a transformation known as dehydrogenation, which is found in important proce...
欧盟研制成功高效紫外发光二极管
欧盟 高效 紫外发光 二极管
2015/12/11
紫外（UV）辐射灯光通常应用于水净化处理行业和水产养殖场，直接杀死有害细菌和加速有机或无机污染物的化学反应中和过程。但目前市场上使用的紫外辐射灯光源含有汞（Mercury）元素成分，将对人体健康和生态环境造成新的风险。欧盟第七研发框架计划{FP7}中小企业主题提供110万欧元，总研发投入140万欧元，由欧盟4个成员国及联系国爱尔兰（总协调）、英国、捷克和挪威，4家创新型中小企业（SMEs）和4家科...
Nanoscale octopods that do double duty as catalysts and plasmonic sensors are lighting a path toward more efficient industrial processes, according to a Rice University scientist.Catalysts are su...
Most of our food, medicine, fuel, plastics and synthetic fibers wouldn’t exist without catalysts, materials that open favorable pathways for chemical reactions to run forth. And yet chemists don’t ful...
Potassium Salt Outperforms Precious Metals As a Catalyst
Potassium Salt Precious Metals a Catalyst
2015/3/4
"We have shown for the first time that you can efficiently make carbon–silicon bonds with a safe and inexpensive catalyst based on potassium rather than ultrarare precious metals like platinum, pallad...
Strongly interacting electrons in wacky oxide synchronize to work like the brain
Strongly interacting electrons wacky oxide synchronize work like the brain
2014/6/12
UNIVERSITY PARK, Pa. -- Current computing is based on binary logic -- zeroes and ones -- also called Boolean computing, but a new type of computing architecture stores information in the frequencies a...
“The vibrations alone are not adequate, but combined with other classical techniques in physical organic chemistry, we are able to predict how reactions can occur,” says chemistry professor Matt Sigma...