Single-Atom Pd Catalyst on a CeO₂ (111) Surface for Methane Oxidation: Activation Barriers and Reaction Pathways

The Journal of Physical Chemistry C, Год журнала: 2024, Номер 128(21), С. 8580 - 8589

Опубликована: Май 20, 2024

Employing density functional theory, we delved into the comprehensive pathways for methane oxidation on Pd single atom supported with CeO2(111) encompassing sequential dehydrogenation, O2 dissociation, and processes. The introduction of a led to reduction in barrier CH4 dissociation 0.50 eV. dehydrogenation proceeded through series reactions: → CH3 CH2 CH C, all steps being exothermic except step. reaction (O2 O* + O*) is thermodynamically exothermic, 2.12 eV over Pd@CeO2. Subsequently, generation CO2 via C* CO* reactions characterized by processes, energies −1.20 −1.01 eV, respectively. On other hand, water production occurs H (an reaction) OH* endothermic −0.80 +0.64 These findings offer valuable insights potential single-atom catalysis involving transition metals industrial application.

Язык: Английский

---

An ultrasensitive nanozyme-based immunochromatographic platform for quantitative detection of NT-proBNP using V2(Sn0.8Pt0.2)C MAX phase

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 418, С. 136223 - 136223

Опубликована: Ноя. 1, 2024

Язык: Английский

---

Intelligent Hydrogel with Physiologically Dependent Capacities of Photothermal Conversion and Nanocatalytic Medicine to Integratively Inhibit Bacteria and Inflammation for On‐Demand Treatment of Infected Wound

Small, Год журнала: 2024, Номер unknown

Опубликована: Окт. 6, 2024

Abstract Although chemodynamic therapy (CDT) and photothermal (PTT) based on a variety of nanoparticles have been developed to achieve effective anti‐bacterial therapy, the limited therapeutic efficiency CDT alone, as well undifferentiated damage PTT both bacteria surrounding healthy tissue are still challenges for their clinical application infected wounds treatments. In addition, during PTT‐mediated antimicrobial processes, endogenous macrophages would be easily converted pro‐inflammatory (M1 phenotype) under local ROS hyperthermia promote inflammation, resulting in unexpected suppression regeneration possible wound deterioration. To address these problems, biodegradable sodium alginate/hyaluronic acid hydrogel loaded with functional CeO 2 ‐Au nano‐alloy (AO@AC P ) is fabricated not only precise efficient antibacterial activity through infection‐environment dependent photothermal‐chemodynamic but also rapidly eliminate excess reactive oxygens (ROS) M1 type macrophage at area induce polarization M2 significant inhibition inflammation remarkable enhancement regeneration, hopefully developing an strategy treat wound.

Язык: Английский

---

Noble metal-enhanced Au@CuO heterostructure with multienzyme-mimicking activities for colorimetric detection of tannic acid

The Analyst, Год журнала: 2024, Номер 149(19), С. 4889 - 4898

Опубликована: Янв. 1, 2024

Nanozymes, serving as synthetic alternatives to natural enzymes, offer several benefits including cost-effectiveness, enzyme-like catalytic abilities, enhanced stability, adjustable activity, easy recyclability, mild reaction conditions, and environmental friendliness. Nonetheless, the ongoing quest develop nanozymes with activity delve into mechanism remains a challenge. In our research, we effectively developed Au@CuO nanocomposites (Au@CuO Nc), replicating functions of four enzymes found in nature: peroxidase (POD), catalase (CAT), glutathione (GPx), oxidase (OXD). The efficiency Nc for TMB oxidation (oxTMB) was approximately 4.8 times greater than that plain Cu

Язык: Английский

---

Orchestrating cancer therapy: Recent advances in nanoplatforms harmonize immunotherapy with multifaceted treatments

Materials Today Bio, Год журнала: 2024, Номер 30, С. 101386 - 101386

Опубликована: Дек. 9, 2024

Язык: Английский

---