Embedding Nanocluster in MOF via Crystalline Ion-Triggered Growth Strategy for Improved Emission and Selective Sensing

Metal–organic frameworks (MOFs) containing metal nanoclusters (NCs) display great potentials, but the fabrication faces challenges because of the serious agglomeration of NCs during the MOF growth. We report a crystalline ion-triggered growth strategy for embedding AuNCs in ZIF-8. As control, when the encapsulation was triggered with other metal ions (e.g., Ca²⁺, Pb²⁺, Cd²⁺, Na⁺, Fe³⁺, Cu²⁺, and Ni²⁺), the AuNCs failed to be encapsulated. The quantum yields and lifetime of AuNCs were greatly enhanced after embedding in ZIF-8. The AuNCs@ZIF-8 were then successfully applied for the selective sensing of H₂S both in liquid and gas phases. This crystalline ion-triggered growth strategy was easily extended to other systems, such as AgNCs@ZIF-8 and AuNCs@ZIF-67, indicating the general adaptability of this design protocol

Baseline data from the male patients.

<p>Skewed data are presented as medians (interquartile range); categorical data are presented as percentages. All ages are shown in years. Differences in baseline characteristics among the groups were examined using the Kruskal-Wallis H test, one-way ANOVA, Fisher's exact test, or χ2 test, according to the data distribution characteristics. AHI, apnea-hypopnea index.</p><p>Baseline data from the male patients.</p

Adjusted odds ratios (ORs) relating OSA severity to various risk factors.

<p>ORs (95% CIs), adjusted for each covariate for the effects of other covariates, were evaluated by ordinal logistic regression modeling.</p><p>Adjusted odds ratios (ORs) relating OSA severity to various risk factors.</p

The distribution rules for age, diabetes, obesity and hypertension in female patients.

<p>The patient median ages and proportions of diabetes, obesity and hypertension were plotted against AHI severity stratifications. The mild, moderate and severe OSA groups were indicated as 5≤AHI<15, 15≤AHI<30 and AHI≥30, respectively.</p

Baseline data from the female patients.

<p>Skewed data are presented as medians (interquartile range); categorical data are presented as percentages. All ages are shown in years. Differences in baseline characteristics among the groups were examined by the Kruskal-Wallis H test, one-way ANOVA, Fisher's exact test, or χ2 test, according to the data distribution characteristics. AHI, apnea-hypopnea index.</p><p>Baseline data from the female patients.</p

Synergetic Integration of Cu_1.94S–Zn_<i>x</i>Cd_1–<i>x</i>S Heteronanorods for Enhanced Visible-Light-Driven Photocatalytic Hydrogen Production

In this Communication, we present the integration of synergetic designs into high-quality, well-defined Cu_1.94S–Zn_<i>x</i>Cd_1–<i>x</i>S heteronanorods (0 ≤ <i>x</i> ≤ 1) for enhanced photocatalytic hydrogen evolution. These heteronanorods possess two light absorbers, intimate heterointerfaces, tunable band gaps over a wide range, and uniform one-dimensional morphology. As verified by experimental and density functional theory studies, these heteronanorods with continuous composition adjustment fully exploit the benefits of both interfacial charge separation and optimized band alignments. Even without any cocatalysts, Cu_1.94S–Zn_0.23Cd_0.77S heteronanorods exhibit efficient hydrogen production activity (7735 μmol h^–1 g^–1) under visible-light irradiation (λ > 420 nm), representing a 59-fold enhancement compared with the pristine CdS catalyst. Meanwhile, deposition of a Pt cocatalyst on the Cu_1.94S–Zn_<i>x</i>Cd_1–<i>x</i>S surface substantially enhances the hydrogen production performance (13 533 μmol h^–1 g^–1) with an apparent quantum efficiency of 26.4% at 420 nm, opening up opportunities to promote the overall photocatalytic performance using rationally designed nanostructures