Results 141 to 150 of about 104,171 (282)

Serine Grafted Silica Coated Nanoscale Zero‐Valent Iron with Enhanced Fenton‐Like Degradation of Mixed Organic Solvents of Tributyl Phosphate and n‐dodecane

open access: yesAdvanced Science, EarlyView.
Serine grafted silica coated nanoscale zero‐valent iron is synthesized. Through the SiO2 coating and serine grafting, the aggregation and oxidation of nZVI are reduced, and the slow release of Fe2+ ensured the catalytic cycle. The adsorption capacity for TBP and n‐dodecane is higher, because of the synergistic effect of surface functional groups.
Peijie Sun, Haifeng Xu, Lejin Xu
wiley   +1 more source

Cobalt Pyrene‐Quaterpyridine Molecular Complex Immobilized on Functionalized Multi‐Walled Carbon Nanotubes as a Robust Hybrid Catalyst for Efficient Electrochemical Reduction of CO2

open access: yesAdvanced Science, EarlyView.
The efficiency and durability of Coqpy@MWCNT hybrids (qpy = quaterpyridine) for electrocatalytic CO2 reduction are significantly improved by using coordination and enhanced π–π interaction strategy, with TOF of 79 s−1, TON of 5.7 × 105, FE close to 100%; which is achieved by functionalization of MWCNT with carboxyl groups and appending a pyrene group ...
Yue Wei   +6 more
wiley   +1 more source

In Situ Structural Evolution and Activity Descriptor of Atomically Dispersed Catalysts During Nitrate Electroreduction

open access: yesAdvanced Science, EarlyView.
The in situ evolution of single‐atom catalysts to metallic nanoclusters during nitrate electroreduction is demonstrated. A direct correlation between the OH binding energy on the metallic clusters and ammonia production rate is established as a key activity descriptor, explaining the superior performance of Ni and Co catalysts.
Daniel S. Braga   +10 more
wiley   +1 more source

Carbon isotopes in environmental and palaeoclimate investigation [PDF]

open access: yes, 2013
Natural cosmic-ray produced radiocarbon 14C is a part of the CO2 cycle and through the atmosphere-biosphere-hydrosphere exchange process has been introduced to the environment. Anthropogenic disturbance of the natural 14C activity caused by nuclear tests, nuclear power plants and fossil fuel combustion has been recorded in the atmospheric CO2.
openaire   +2 more sources

SLC6A14 Drives Mitochondrial Fusion and Oxidative Phosphorylation to Promote Cancer Stemness and Early‐Onset of Breast Cancer

open access: yesAdvanced Science, EarlyView.
Elevated levels of the plasticizer DEHP associate with earlier breast cancer diagnosis. DEHP enhances glutamine‐powered energy production via the transporter SLC6A14 and pushes mitochondria toward fusion, driving tumor initiation by boosting cancer stemness. Blocking SLC6A14 lowers stemness, slows tumors, and improves chemotherapy response.
Dai‐Wei Hu   +15 more
wiley   +1 more source

Strong Internal Electric Field‐Driven S‐scheme CoAl‐LDH/ZrO2 Heterojunction for Enhanced Photocatalytic CO2 Reduction: Configuration, Performance, and Mechanism

open access: yesAdvanced Science, EarlyView.
This study constructed an S‐scheme heterojunction catalyst CoAl‐LDH/ZrO2 driven by an internal electric field. The S‐scheme heterojunction accelerated charge separation and strengthened redox capability synergistically contribute to the superior CO2 reduction performance.Under simulated solar irradiation, optimal catalyst exhibited a CO production rate
Mengwei Chen   +8 more
wiley   +1 more source

Decoupling Electron and Proton Transfer in Noncontact Catalytic Hydrogenation of Nitroaromatics

open access: yesAdvanced Science, EarlyView.
A noncontact catalytic system is constructed by modifying metal nanoparticles supported on conductive carbon with (hypo)phosphorous acid. This design effectively prevents the adsorption of unsaturated substrates while permitting H2 activation to generate electrons and protons. The hydrogenation is governed by electron transfer processes, which occur at
Zhongyin Liang   +3 more
wiley   +1 more source

On the Design of Effective Water‐Soluble Actinide‐Masking Ligands Through Ligand Structure Modulation

open access: yesAdvanced Science, EarlyView.
Ligand topology and non‐coordination atoms are proved to be important for the design of effective water‐soluble actinide masking agents. Abstract Water‐soluble actinide‐masking ligands are fundamentally important for achieving efficient lanthanide/actinide separation and for the development of water‐soluble f‐block complexes for bioimaging and ...
Bin Li   +9 more
wiley   +1 more source

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