Results 21 to 30 of about 53,681 (204)
Microcrystallite characters and photocatalytic activity of TiO2 doped with C60(掺C60二氧化钛微晶特性和光催化活性研究)
Zhejiang Daxue xuebao. Lixue ban, 2001 通过热分析、X射线衍射以及光活性测试，分析了不同掺杂量、不同煅烧温度下掺杂C60二氧化钛微晶样品，研究了掺杂对二氧化钛光活性的改善情况.C60掺杂二氧化钛体系中C60的热解温度明显提前，二氧化钛的晶化温度延迟、相变受到抑制且光活性得到一定程度的提高，其微晶参数也有一定规律变化.
JINDa-lai(金达莱) +3 more
doaj +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT A facile coprecipitation‐pyrolysis strategy was employed to fabricate Cu/Co nanoparticles (NPs) embedded in nitrogen‐doped carbon matrices (Cu/Co@N‐C) through the carbonization of CuCo‐MOF precursors. Moreover, monometallic counterparts of Cu@N‐C and Co@N‐C were also prepared via carbonization of bimetallic CuZn‐MOF and CoZn‐MOF, respectively.
Weinan Yao +7 more
wiley +1 more source
Efficient Photocatalytic Removal of Toluene by Synergistic FeCe/TiO2: Performance and Mechanism
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Efficient removal of volatile organic compounds (VOCs) in confined spaces is crucial for environments such as spacecraft and deep‐sea submarines. Metal modification is an effective strategy to enhance the light absorption capacity of titanium dioxide (TiO2) and suppress the recombination of photogenerated charge carriers.
Ke Xu +10 more
wiley +1 more source
MoO 3 /Si界面区钼掺杂非晶氧化硅层形成的第一性原理研究
, 2019 采用基于密度泛函理论的第一性原理计算方法, 通过模拟MoO3/Si界面反应, 研究了MoOx薄膜沉积中原子、分子的吸附、扩散和成核过程, 从原子尺度阐明了缓冲层钼掺杂非晶氧化硅(a-SiOx(Mo))物质的形成和机理. 结果表明, 在1500 K温度下, MoO3/Si界面区由Mo, O, Si三种原子混合, 可形成新的稳定的物相.
Dong-Yun Chen +5 more
semanticscholar +1 more source
, 2006 光催化具有能耗低、操作简单、无二次污染等突出特点，在污染物处理、有机合成、催化制氢等能源环境领域具有潜在的发展前景。但是光催化活性和转化效率普遍较低仍是光催化应用最大的瓶颈之一。本文通过对TiO2的Zr离子控制掺杂，来探讨提高光催化剂活性的途径，并运用到可见光催化剂InVO4的控制掺杂改性上，最后分析了控制掺杂提高光催化剂活性的机理。 本文采用溶胶-凝胶法，利用控制掺杂工艺，制备了Zr非均匀分布TiO2薄膜催化剂、Ni非均匀分布InVO4薄膜催化剂，并合成了Ni-InVO4复合粉末催化剂。通过XRD ...
樊俊林
core +1 more source
四川大学学报. 自然科学版, 2005 用传统的固相烧结工艺,制备了铌掺杂SrBi4Ti4O15（SBTi）铁电陶瓷SrBi4-x/3Ti4-xNbxO15（SBTN-x）,Nb掺杂量x=0.00,0.003,0.012,0.03和0.06.X射线衍射的结果表明,所有样品均为单一的层状钙钛矿结构相,Nb掺杂未改变SBTi的晶体结构.铁电测量结果表明,Nb掺杂使SBTi的铁电性能得到较大改善.随掺杂量x的增加,样品的剩余极化（2Pr）呈现出先增大,后减小的规律.在x=0.03时,2Pr达到最大值24.7μC/cm2 ...
金灿, 朱骏, 陈小兵
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Rationally designing an electrocatalyst to achieve stable and efficient urea oxidation reaction (UOR) is crucial but still challenging, especially for ampere‐level application. Herein, Mn and Fe dual‐doped Ni0.85Se (Mn/Fe–Ni0.85Se) catalyst is synthesized via a facile and scalable electrodeposition and followed by selenization.
Guanglin Zhu +6 more
wiley +1 more source
Sm3+,Sr2+共掺杂对CeO2基电解质性能影响的密度泛函理论+U计算
, 2018 Sm3+，Sr2+共掺杂CeO2的离子电导率被证实可高达Sm3+掺杂CeO2离子电导率的近两倍，然而，共掺杂对CeO2电导率的作用机理尚不明确.本文利用第一性原理计算的密度泛函理论+U方法，对Sm3+和Sr2+共掺杂的CeO2进行了系统的研究，对比Sm3+或Sr2+单掺杂的CeO2体系，计算并分析了共掺杂体系的电子态密度、能带结构、氧空位形成能以及氧空位迁移能等微观属性.计算结果表明，Sm3+，Sr2+的共掺杂对CeO2基电解质性能的提高具有协同效应，二者的共掺杂不仅能协同抑制CeO2体系的电子电导率 ...
Mei-Na Chen +5 more
semanticscholar +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Solar‐blind ultraviolet (UV) photodetectors (SBPDs) play a critical role in applications including UV communication and fire warning systems. Gallium oxide (Ga2O3) has emerged as a promising material due to its wide bandgap and low cost, but suffers from high dark current and slow response speed caused by oxygen vacancy (VO) defects. This work
Yuhao Lin +14 more
wiley +1 more source