Additional file 2: of Associations of mood symptoms with NYHA functional classes in angina pectoris patients: a cross-sectional study

Table S2. Characteristics of patients stratified by anxiety severity. (DOCX 22 kb

Additional file 1: of Associations of mood symptoms with NYHA functional classes in angina pectoris patients: a cross-sectional study

Table S1. Comparison of fit statistics for the five previously hypothesized factor models of PHQ-9. (DOCX 16 kb

Additional file 3: of Associations of mood symptoms with NYHA functional classes in angina pectoris patients: a cross-sectional study

Table S3. Association between NYHA classes and clinical features using multivariate ordinal logistic regression model. (DOCX 17 kb

Vanadium-Substituted Polyoxometalates Regulate Prion Protein Fragment 106–126 Misfolding by an Oxidation Strategy

Prion disorders are a group of lethal infectious neurodegenerative diseases caused by the spontaneous aggregation of misfolded prion proteins (PrPSc). The oxidation of such proteins by chemical reagents can significantly modulate their aggregation behavior. Herein, we exploit a series of vanadium-substituted Keggin-type tungsten and molybdenum POMs (W- and Mo-POMs) as chemical tools to oxidize PrP106–126 (denoted as PrP), an ideal model for studying PrPSc. Due to the band gaps being larger than that of Mo-POMs, W-POMs possess higher structural stability and show stronger binding and oxidation effect on PrP. Additionally, the substitution of W/Mo by vanadium elevates the local electron distribution on the bridged O(26) atom, thereby strengthening the hydrogen bonding of POMs with the histidine site. Most importantly, with the number of substituted vanadium increases, the LUMO energy level of POMs decreases, making it easier to accept electrons from methionine. As a result, PW10V2 displays the strongest oxidation on the methionine residue of PrP, leading to an excellent inhibitory effect on PrP aggregation and a significant attenuation on its neurotoxicity

Atomic Modulation of Single Dispersed Ir Species on Self-Supported NiFe Layered Double Hydroxides for Efficient Electrocatalytic Overall Water Splitting

Electrocatalytic overall water splitting is a promising approach for hydrogen production, and the rational design of the catalyst on the atomic level is critical for decreasing the energy barrier in both hydrogen and oxygen evolution reactions (HER/OER). Herein, we report an NiIr single atom alloy loaded NiFe-LDH (NiIrSAA-NiFe-LDH) and Ir single atom loaded NiFe-LDH (IrSAC-NiFe-LDH) for overall water splitting. The Ir single atoms are found via EXAFS fitting and DFT calculations to be located on the top of Fe3+ with Ir–O6 coordination on IrSAC-NiFe-LDH. The as-prepared NiIrSAA-NiFe-LDH presents an overpotential of 28.5 mV at 10 mA cm–2 in the HER and IrSAC-NiFe-LDH exhibits an overpotential of 194 mV at 10 mA cm–2 in the OER, respectively. Moreover, the electrolyzer assembled by NiIrSAA-NiFe-LDH and IrSAC-NiFe-LDH presents a low cell voltage of 1.49 V at 10 mA cm–2 and a long-term stability of over 120 h at 200 mA cm–2 in overall water splitting with an estimated cost of US $1.12 per kilogram of H2, meeting the target raised by the US Department of Energy (H2–1). Such high HER activity for NiIrSAA-NiFe-LDH can be attributed to the strong electronic interaction between Ni and Ir single atoms in NiIrSAA, resulting in an optimized hydrogen adsorption energy (ΔGH* = −0.17 eV). And the Ir single atoms modify the electronic structures of the adjacent Ni2+ in NiFe-LDH, which reduces the energy barrier of the O2 emission, thus enhancing the OER performance

Atomic Modulation of Single Dispersed Ir Species on Self-Supported NiFe Layered Double Hydroxides for Efficient Electrocatalytic Overall Water Splitting

Electrocatalytic overall water splitting is a promising approach for hydrogen production, and the rational design of the catalyst on the atomic level is critical for decreasing the energy barrier in both hydrogen and oxygen evolution reactions (HER/OER). Herein, we report an NiIr single atom alloy loaded NiFe-LDH (NiIrSAA-NiFe-LDH) and Ir single atom loaded NiFe-LDH (IrSAC-NiFe-LDH) for overall water splitting. The Ir single atoms are found via EXAFS fitting and DFT calculations to be located on the top of Fe3+ with Ir–O6 coordination on IrSAC-NiFe-LDH. The as-prepared NiIrSAA-NiFe-LDH presents an overpotential of 28.5 mV at 10 mA cm–2 in the HER and IrSAC-NiFe-LDH exhibits an overpotential of 194 mV at 10 mA cm–2 in the OER, respectively. Moreover, the electrolyzer assembled by NiIrSAA-NiFe-LDH and IrSAC-NiFe-LDH presents a low cell voltage of 1.49 V at 10 mA cm–2 and a long-term stability of over 120 h at 200 mA cm–2 in overall water splitting with an estimated cost of US $1.12 per kilogram of H2, meeting the target raised by the US Department of Energy (H2–1). Such high HER activity for NiIrSAA-NiFe-LDH can be attributed to the strong electronic interaction between Ni and Ir single atoms in NiIrSAA, resulting in an optimized hydrogen adsorption energy (ΔGH* = −0.17 eV). And the Ir single atoms modify the electronic structures of the adjacent Ni2+ in NiFe-LDH, which reduces the energy barrier of the O2 emission, thus enhancing the OER performance

Single Carbon Vacancy Traps Atomic Platinum for Hydrogen Evolution Catalysis

The coordinated configuration of atomic platinum (Pt) has always been identified as an active site with high intrinsic activity for hydrogen evolution reaction (HER). Herein, we purposely synthesize single vacancies in a carbon matrix (defective graphene) that can trap atomic Pt to form the Pt–C3 configuration, which gives exceptionally high reactivity for HER in both acidic and alkaline solutions. The intrinsic activity of Pt–C3 site is valued with a turnover frequency (TOF) of 26.41 s–1 and mass activity of 26.05 A g–1 at 100 mV, respectively, which are both nearly 18 times higher than those of commercial 20 wt % Pt/C. It is revealed that the optimal coordination Pt–C3 has a stronger electron-capture ability and lower Gibbs free energy difference (ΔG), resulting in promoting the reduction of adsorbed H+ and the acceleration of H2 desorption, thus exhibiting the extraordinary HER activity. This work provides a new insight on the unique coordinated configuration of dispersive atomic Pt in defective C matrix for superior HER performance