Results 1 to 10 of about 77 (59)

光还原法制备增强光催化性能的Bi-TiO2纳米管

open access: yesGongye shui chuli, 2018
采用阳极氧化法及简易光沉积法制备了一种Bi-TiO2纳米管(Bi-TNAs)光催化剂,并对其形貌、晶相以及光吸收性能进行表征。结果显示,薄片状的金属相Bi微米片成功沉积在TiO2纳米管阵列表面。光催化降解罗丹明B实验显示,Bi-TNAs的光催化降解性能比TNAs显著增强。单质Bi微米片作为电子陷阱可捕获TiO2的光生电子,延长载流子寿命,降低电子-空穴复合速率,增强TNAs光催化降解罗丹明B的活性。
肖昌仁   +5 more
doaj   +2 more sources

热解法合成增强光催化活性的In2O3-TiO2纳米管

open access: yesGongye shui chuli, 2019
通过热解法分解InCl3形成In2O3并均匀沉积于通过阳极氧化法制备的TiO2纳米管(TNAs)表面,并通过光催化降解罗丹明B(RhB)来测试In2O3-TNAs的光催化活性。结果表明,复合In2O3后TNAs的光催化活性显著提升。此外热解沉积工艺简单、成本低,有利于光催化剂的批量、工业化生产,为金属氧化物半导体的沉积提供了新思路。
肖昌仁   +4 more
doaj   +2 more sources

纳米TiO2光催化降解污染物研究

open access: yesGongye shui chuli, 2003
以10W直管紫外杀菌灯为光源, 以泡沫镍基纳米TiO2为催化剂, 研究了低沸点有机小分子污染物的光催化降解。以丙酮为光催化降解对象, 结果表明, 丙酮的降解符合Langmuir Hinshelwood准一级动力学方程, 并研究了相关因素对丙酮的光催化降解的影响, 并对实验现象加以解释。实验还对类似于丙酮的低沸点有机污染物, 设计了一种新颖的光催化反应器。
丁时锋, 唐超群, 李清香
doaj   +2 more sources

Targeting Inflammaging: A Metformin‐Releasing Titanium Implant Reprograms Senescent Macrophages to Orchestrate Angiogenesis and Osteogenesis

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Bone defect repair in elderly patients is frequently compromised by reduced osteogenic capacity and delayed healing. Chronic inflammation‐driven inflammaging is a critical contributor to this impairment, characterized by dysfunctional autophagy in senescent macrophages (S‐MΦs), excessive reactive oxygen species (ROS) accumulation, and ...
Ruiyue Hang   +6 more
wiley   +1 more source

Millimeter/Nano‐Structured Metal Monolithic Catalysts: A Privileged Opportunity for Sustainable Water Purification

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Cross‐scale assembly of metal (sub) nanoparticles and/or single atoms into millimeter/nanostructured metal monolithic catalysts (Min‐SMCs) is highly appealing for sustainable water cleanup, due to energy‐efficient catalyst recyclability, high infrastructure compatibility, and low metal‐releasing risks.
Jia‐Cheng E. Yang   +4 more
wiley   +1 more source

Temperature‐Induced Transformation of Oxidation Mechanism in HfZrTiTa0.5Al0.5 Refractory High‐Entropy Alloy: The Role of Elemental Segregation and Lattice Defects

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Refractory high‐entropy alloys (RHEAs) face severe oxidation challenges at elevated temperatures, despite their outstanding mechanical properties. Consequently, understanding the oxidation mechanisms of RHEAs is crucial for their high‐temperature applications.
Zheng Tian   +7 more
wiley   +1 more source

Multi‐Walled Carbon Nanotube‐Penetrated Metal–Organic Framework‐Derived TiO2/C 3D Conductive Network Achieves Lightweight, Wide‐Band, Ultra‐Strong Electromagnetic Wave Absorption

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT In recent years, materials capable of achieving efficient electromagnetic wave (EMW) absorption over a broad frequency range have attracted widespread attention. Such materials are not only significant in mitigating electromagnetic interference and pollution caused by the extensive use of electronic devices but also demonstrate outstanding ...
Maoxia Lu   +7 more
wiley   +1 more source

Cu‐Enhanced Medium‐Entropy TiZrCoCrMo Alloys: Balancing Superior Antibacterial and Osteogenic Properties for Orthopedic Implants

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT This study introduces novel nonequiatomic TiZrCoCrMoCux (x = 0, 5, 10; at%) medium‐entropy alloys (MEAx) tailored for orthopedic implants, synergistically combining the biocompatibility of Ti‐based alloys, the wear resistance of CoCrMo alloys, and the antibacterial/osteogenic attributes of Cu. The alloy's microstructure, mechanical properties,
Hang Yu   +9 more
wiley   +1 more source

Highly Stable CsPbBr3@Cs4PbBr6 Perovskite Fluorescent Nanomaterials for White Light‐Emitting Diodes

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Although halide perovskite nanocrystals exhibit excellent photoelectric properties, their inherent instability greatly limits their practical applications. Here, we report a novel self‐assembly strategy to synthesize highly stable CsPbBr3@Cs4PbBr6 perovskite fluorescent nanomaterials in a single step by using 4,4′‐azo (4‐cyanoglutaric acid, CA)
Junqing Xiahou   +8 more
wiley   +1 more source

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