Results 11 to 20 of about 85,244 (133)

碳气凝胶及其在污水处理中的应用

open access: yesGongye shui chuli, 2021
碳气凝胶是由碳纳米材料形成的三维多孔网络结构材料,具有比表面积大、孔隙率高、化学性质稳定和结构可调等优点,被广泛用于水污染处理中,用于去除油、有机溶剂、染料、重金属离子等。综述了碳气凝胶及其复合材料的研究进展,讨论了有机碳气凝胶、生物质基碳气凝胶、石墨烯基碳气凝胶三类碳气凝胶材料的组成、制备和吸附性能,总结了碳气凝胶在水处理中的应用并简要分析了碳气凝胶材料当前面临的挑战以及未来的发展前景。
王雅苹   +5 more
doaj   +2 more sources

Ag2O/WO3-SiO2气凝胶的制备及光催化性能研究

open access: yesGongye shui chuli, 2023
为扩大WO3-SiO2气凝胶的可见光吸收范围,改善其光催化效果,先以溶胶-凝胶法制备了WO3-SiO2气凝胶,再采用浸渍法制备了不同Ag2O负载量的Ag2O/WO3-SiO2复合气凝胶光催化剂。通过扫描电镜(SEM)、X射线衍射分析仪(XRD)、X射线光电子能谱仪(XPS)、紫外-可见光谱仪(UV-vis)、荧光分光光度计(PL)对样品进行了表征分析,并在464 nm波长光源下考察了样品光催化降解亚甲基蓝(MB)的性能。表征结果表明,负载的Ag2O与WO3-SiO2气凝胶中的WO3存在电子转移相互作用 ...
陈宝宁   +3 more
doaj   +2 more sources

低温低浊度海水淡化高效预处理试验研究

open access: yesGongye shui chuli, 2023
针对胶州湾海水冬季低温低浊度的特点,设计了混凝+气浮+三级过滤和混凝+三级过滤工艺系统,研究了两种工艺系统在聚合氯化铝投加量为10 mg/L,滤速为8 m/h的运行条件下对低温低浊度海水预处理的效果及运行稳定性。结果表明:混凝+气浮+三级过滤工艺的出水淤泥密度指数(SDI15)稳定小于3.0,出水浊度低于0.4 NTU,CODMn稳定小于2.0 mg/L,铁、铝胶体质量浓度低于0.05 mg/L,二氧化硅胶体质量浓度低于0.2 mg/L,UV254低于1.8 mg/L,能够满足反渗透膜元件的进水水质要求,
张所新   +9 more
doaj   +2 more sources

铁酸锰-石墨烯气凝胶活化PMS降解酸性红B

open access: yesGongye shui chuli, 2021
用水热法和冷冻干燥法制备了MnFe2O4-rGO气凝胶催化剂,活化过一硫酸盐(PMS)产生强氧化性的硫酸根自由基(SO4·-)氧化降解酸性红B。用SEM、XRD、FTIR、拉曼光谱仪、N2吸脱附等温仪对该催化剂进行表征,考察催化剂投加量、PMS浓度、初始pH对酸性红B降解效果的影响。结果表明,当催化剂投加量为0.15 g/L、PMS浓度为0.6 mmol/L、pH为7时,反应30 min后酸性红B的降解率为91.5%;且pH适用范围广,pH在3~9时降解率均在82%以上。投加自由基捕获剂叔丁醇和甲醇 ...
杨雨杰   +7 more
doaj   +2 more sources

Effect of Different Irradiation Dosage of 60Co-γ on Properties of Gelatin(60Co-γ不同剂量辐照对明胶特性的影响) [PDF]

open access: yesShipin kexue jishu xuebao, 2013
The gelatin was irradiated by 60Co-γ with the dosages of 0-527kGy and the parameters including viscosity, gel strength, protein component and molecular weight were determined immediately.
GENG Sheng-rong(耿胜荣)   +3 more
doaj   +1 more source

Hybrid Flexible–Soft Neural Interface as a Practical Solution for Long‐Term Implants

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Implantable neural interfaces face persistent challenges in long‐term functionality due to chronic immune responses, mechanical mismatch with tissue, and material corrosion in vivo. The commonly used flexible materials, such as polyimide and parylene‐C (poly[monochloro‐p‐xylylene]), have advantages in low water vapor permeability and high ...
Bowen Ji   +13 more
wiley   +1 more source

MABR-絮凝联合工艺处理合成橡胶废水的探索

open access: yesGongye shui chuli, 2015
提出以膜曝气生物反应器(MABR)与絮凝联合工艺处理合成橡胶废水。在MABR工段,膜内曝气压力为0.08 MPa、料液循环流速为0.04 m/s时,COD、NH4+-N、色度的去除率分别达到78.7%、97.8%、24.1%。在一定范围内,增加膜内曝气压力及提高料液流速有利于MABR性能的提高。在絮凝工段,通过添加复合絮凝剂能进一步将COD降至45 mg/L、色度降至47倍。MABR-絮凝联合工艺是一种可高效处理合成橡胶废水的新型工艺技术。
胡亮   +5 more
doaj   +2 more sources

Anisotropic MoS2/SiC Aerogels: A Multifunctional Platform for Broadband Electromagnetic Stealth and Thermal Management

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song   +4 more
wiley   +1 more source

Guanidinium‐Based Covalent Organic Frameworks via Pore Wall Regulation: Efficient Selective Palladium Recovery From Metallurgical Wastewater

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Recovering palladium (Pd) from low‐concentration metallurgical wastewater still poses significant challenges. In this study, triaminoguanidine hydrochloride was used as the key functional site, and three guanidine‐functionalized covalent organic frameworks (GCOFs) were successfully constructed by adjusting the substituents (–H, –OH, and –OCH3)
Jiaxing Xiong   +9 more
wiley   +1 more source

石墨烯气凝胶/MnO2复合材料强化电容去离子性能研究

open access: yesGongye shui chuli, 2020
选用石墨烯气凝胶(GA)作为载体,负载MnO2纳米颗粒,构建新型石墨烯气凝胶-MnO2复合材料(MnGA),并制备电容电极,研究复合材料的电容去离子性能。结果表明,MnO2在石墨烯片层上可形成一维线状结构,减弱石墨烯片层间的堆叠效应,提升材料电容,从而提高了电极的脱盐性能,最大电容脱盐量达到25.78 mg/g;NaCl溶液的初始浓度、供电电压和进水流速均会对电容脱盐量产生影响。
韩登程, 孙雪菲, 王曙光
doaj   +2 more sources

Home - About - Disclaimer - Privacy