The electrochemical CO2 reduction (ECR) into value-added products presents an appealing approach to mitigate CO2 emission caused by excess consumption of fossil
Fluorescent graphene oxide (GO) nanoparticles were obtained from the thermal carbonization of citrate acid.Depending on the synthesizing temperature,the size of
Iron-based anodes for lithium-ion batteries(LIBs)with higher theoretical capacity,natural abundance and cheapness have received considerable attention,but they still suffer from the fast capacity fading.To address this issue,we report a facile synthesis o
Ti3C2Tx,which is a novel two-dimensional (2D)material,has received enormous interest in the field of sensor technology due to its large surface area,excellent e
Formaldehyde (HCHO) is widely known as an indoor air pollutant,and the monitoring of the gas has significant importance.However,most HCHO sensing materials do n
The extensive use of toluene stimulates the effective detection by sensitive gas sensors based on unique materials.Here,hierarchical flower-like NiFe2O4 with core-shell architecture was synthesized by a facile hydrothermal method in
蛹虫草多糖具有抗氧化、抗肿瘤等多种药理活性,在食药用方面有很好的发展前景.植物多糖因含有色素和酚类化合物,导致颜色较深,不利于产品的开发.因此,对蛹虫草粗多糖的脱色纯化工艺的研究势在必行.文章以蛹虫草多糖的保留率、脱色率以及蛋白清除率为指标,通过单因素方差试验初步确定提取过程的主要影响因素,再设计中心组合试验,得到最佳工艺参数:上样溶液体积为175 mL,质量浓度为1.25 mg/mL,控制pH为5.5,常温下以1.5 BV/h的流速上样,收集多糖脱色溶液.在上述条件下,重复进行3次验证试验,得到溶液的多
Sensing mechanism is still a big problem in the field of gas sensor.In-depth study of the sensing mechanism can provide better ideas for the design of sensing materials,and it is also more conducive to the improvement in gas-sensing performance.In this wo
金川镍矿是我国较大的硫化铜镍矿床,其埋藏深、地应力高、矿岩破碎,采用下向分层进路胶结充填法开采,以棒磨砂作为骨料和水泥作为胶凝材料,采用高灰砂比和高浓度管道自流输送充填采矿技术,充填采矿成本居高不下.针对金川矿山大量废弃物,为此开展固废物在充填采矿中资源化利用研究,不仅降低了采矿成本,而且还为固废资源化利用探索出一条途径.首先开展金川固体废物调查与利用现状分析;然后概述固体废弃物在充填采矿中利用研究进展以及存在的问题;最后,针对固废资源研究现状与存在的问题,提出了固废资源在金川矿山深部以及贫矿资源开发中实
Methane is an explosive gas in coalmines and needs to be monitored by methane sensors.Conductivetype methane sensors are small,simple and stable,and they are very promising for mining safety or home safety applications.They can even be employed in mining