Results 111 to 120 of about 42,654 (293)

Enhancing Biogenic Formic Acid Production in the Modified OxFA Process by Acetonitrile Addition

Advanced Science, EarlyView.
In this study, the beneficial effect of using acetonitrile as a co‐solvent in the modified OxFA process is shown, outperforming methanol, demonstrating improved reaction kinetics combined with high selectivity for the HPA‐2 (H5PV2Mo10O40) catalyzed oxidation of xylose to FA.
Jan‐Dominik H. Krueger, Pegah Saedi, Maximilian J. Poller, Alberto Collauto, Jason P. Hallett, David Robinson, Maxie M. Roessler, Jakob Albert   +7 more
wiley   +1 more source

Menetelmäkehitys maaperän analysointiin ICP-OES-laitteella [PDF]

Opinnäytetyö toteutettiin Tampereen ammattikorkeakoulun kemian laboratoriossa, ja sen tavoitteena oli kehittää luotettava ja toistettava menetelmä maaperän alkuainepitoisuuksien määrittämiseksi ICP-OES-laitteella.
Kulokorpi, Sanna
core  

Asymmetric Electrostrain/Electrobending in Piezoelectric Ceramics: Role of Defect Dipoles or Oxygen Vacancies

Advanced Science, EarlyView.
Defect‐configurational origins of the asymmetric apparent electrostrain are revealed in different piezoelectric ceramics via atomic‐scale visualization of defect configurations. Migration of oxygen vacancies leads to the electrobending effect in N2‐sintered BaTiO3, while defect dipoles in Ba0.99TiO2.99 generate true asymmetric electrostrain without ...
Jie Wang, Geng Huangfu, Hongjie Zhang, Tiannan Yang, Zhenhua Ma, Jingsheng Chen, Yun Liu, Yiping Guo   +7 more
wiley   +1 more source

Mn‐Induced Support Stabilization and Ir Electronic Activation Enable Acid‐Stable, Low‐Loading IrO2 Water Oxidation

Advanced Science, EarlyView.
This study introduces a dual‐regulation strategy utilizing a Mn‐doped Co3O4 support to enhance the activity and stability of low‐loading IrO2 catalysts for acidic water oxidation. Mn induces strong Mn─O covalency to reinforce the spinel lattice and activates Ir sites via interfacial electron transfer.
Zhe Liu, Guoxin Ma, Shixiang Yu, Rui Jin, Fei Wang, Xinxin Wen, Mengxin Chen, Yani Ding, Jia Liu, Xinkai Guo, Diab Khalafallah, Hassan Fouad, Xiao Ren, Siwei Li   +13 more
wiley   +1 more source

ICP-OES测定废水中总磷

Gongye shui chuli, 2011
为研究ICP-OES法测定废水中总磷, 通过测定在不同射频功率、观测高度、载气流量和进样量条件下谱线的净强度, 得到了灵敏度的变化规律。进行仪器参数优化后, 测定样品。结果表明, 检出限为0.05 mg/L, 质控样相对误差为1.21%, 相对标准偏差为0.96%(n=6), 样品回收率为98.4%。该法试剂用量比常规的分光光度法少, 效率高, 用于测定废水中的总磷是切实可行的。
陈江, 金新华, 周均, 吴惠英, 吴杰   +4 more
doaj  

V2CTx MXene as a Sacrificial Promoter for NiFe Catalyst for Anion Exchange Membrane Electrolyzers

Advanced Science, EarlyView.
These findings demonstrate that V2CTx functions beyond passive conductive support as an active electronic participant whose structural legacy sustains durable performance even after vanadium leaching in Anion Exchange Membrane (AEM) Electrolysers. ABSTRACT Nickel‐iron layered double hydroxides (NiFe‐LDH) show excellent activity, their poor conductivity
Bastian Schmiedecke, Can Kaplan, Karuppasamy Dharmaraj, Axel Zuber, Merve Buldu‐Aktürk, Ningjun Chen, Mailis Lounasvuori, Xuyun Guo, Valeria Nicolosi, Thorsten Schultz, Norbert Koch, Johanna Rosen, Michelle P. Browne   +12 more
wiley   +1 more source

Rapid determination of indigestible NDF and the markers chromium oxide and titanium dioxide of supplement, forages and faecal samples by ICP-OES and near-infrared reflectance spectroscopy

Discover Animals
Accurate determination of dry matter digestibility (DMD) and total faecal output (FO) is necessary for estimating ruminant dry matter intake (DMI) under grazing conditions.
Andrea Milena Sierra-Alarcón, Diana Marcela Parra-Forero, Ana María Calvo-Salamanca, Erika Natalia Durán-Cruz, Laura Bibiana Gualdrón-Duarte, Claudia Ariza-Nieto, Ronnal Ortiz-Cuadros, Olga Lucia Mayorga-Mogollón   +7 more
doaj   +1 more source

Synthesis and Characterization of Rutile TiO₂Nanopowders Doped with Iron Ions

Nanoscale Research Letters, 2009
Titanium dioxide nanopowders doped with different amounts of Fe ions were prepared by coprecipitation method. Obtained materials were characterized by structural (XRD), morphological (TEM and SEM), optical (UV/vis reflection and photoluminescence, and ...
Mirenghi Luciana, Šojić Daniela, Abramović Biljana, Abazović Nadica, Janković Ivana, Bibić Nataša, Čomor Mirjana   +6 more
doaj   +1 more source

Geometry‐Controlled Assembly of Self‐Standing Nanorods With Undisturbed Plasmonics

Advanced Science, EarlyView.
This study reports a geometry‐driven assembly strategy to vertically align Au@Ag core–shell nanorods on PS beads. This well‐defined architecture enables the preservation of the intrinsic optical response of individual nanorods. Thus, demonstrate a highly reproducible SERS enhancement with exceptional uniformity.
Yoel Negrin‐Montecelo, I. Brian Becerril‐Castro, Vladimir A. Baulin, Veronica Salgueiriño, Ramon A. Alvarez‐Puebla, Miguel A. Correa‐Duarte   +5 more
wiley   +1 more source

Bandgap‐Engineered PtxTey:Ag2Te Composite Quantum Dots Enable Programmable NIR‐II Imaging and Photothermal‐Immune Synergistic Therapy

Advanced Science, EarlyView.
A bandgap‐engineered PtxTey:Ag2Te quantum dot platform enables tunable NIR‐IIb emission for deep‐tissue imaging and mild photothermal therapy. Conjugation with αPD‐L1 confers dual tumor targeting and real‐time monitoring of PD‐L1 dynamics. Mild photothermal modulation induces immune reprogramming, enhancing checkpoint blockade efficacy and achieving ...
Jing Liu, Rui Xu, Quan Wu, Tian‐Xin Xiao, Lai‐Xi Zhao, Lei Sun, Ya‐Wen Zheng, Liang Dong, Zhi‐Quan Tian, Haibo Wang   +9 more
wiley   +1 more source