Design of Dual-Mode Optical Thermometry Based on Thermally Activated Efficient Energy Transfer in LaNbO/Ln (Eu/Sm/Pr) Phosphors.

Exploring methods to achieve high thermal stability in phosphors is of great significance for their applications in high-temperature fields. Currently, energy transfer (ET) from the host to activator lanthanide ions (Ln) is an effective approach to improving the antithermal quenching of phosphors. In this contribution, LaNbO (LNO) with efficient blue emission is used as the host to construct the host-Ln dual-emitting LNO/Ln (Eu/Sm/Pr) phosphor system, and the ET efficiency under thermal activation is investigated.

[Expression of miR-142 and its relationship with Th17/Treg imbalance in children with autoimmune thyroid disease].

Objectives: To investigate the expression of microRNA-142 (miR-142) in children with autoimmune thyroid disease (AITD) and its relationship with the imbalance of helper T cell 17 (Th17) and regulatory T cell (Treg).

Methods: A total of 89 children hospitalized for AITD from January 2019 to December 2022 were prospectively selected as the study subjects, including 48 children with Graves' disease (GD group) and 41 children with Hashimoto's thyroiditis (HT group). Additionally, 55 healthy children undergoing physical examinations during the same period were selected as the control group.

Defect compensation and intervalence charge transfer state-based Pr-doped niobate antithermal quenching phosphors.

Herein, a scheme of Sr/Ca ion substitution was employed to simultaneously regulate the defect and intervalence charge transfer (IVCT) state of SrCaNbO:Pr phosphors, resulting in a dual-modulation strategy for enhancing phosphor thermal stability.

Thermal activation induced charge transfer state absorption redshift realizes strong anti-thermal quenching in Pr-activated phosphor.

In our work, a totally anomalous thermal quenching phenomenon of red-shifted and enhanced charge transfer state (CTS) absorption is found for the first time in LiTaO:Pr phosphors. The crystal structure, luminescent properties and the mechanism of abnormal thermal quenching were investigated in detail.

Oxygen Vacancies-Induced Antifouling Photoelectrochemical Aptasensor for Highly Sensitive and Selective Determination of α-Fetoprotein.

Accurate measurement of cancer markers in urine is a convenient method for tumor monitoring. However, the concentration of cancer markers in urine is so low that it is difficult to achieve their measurement. Photoelectrochemical (PEC) sensors are a promising technology to realize the detection of trace cancer markers due to their high sensitivity.

Enhanced thermally stable performance of Pr-doped vanadate phosphor by inhibiting the intervalence charge transfer quenching channel.

Praseodymium (Pr) ion and the transition metal vanadium (V) ion with d electronic configuration can form an intervalence charge transfer (IVCT) band, which can function both as a compensatory channel for its red emission and as a quenching channel, thus affecting the luminescence thermal stability of the phosphors. Research studies reveal that the emission of Pr in the YVO matrix can be quenched by the IVCT mechanism, thereby limiting the application of phosphors. As such, the present contribution is based on the solid solution replacement strategy to inhibit the constitutent of the IVCT quenching channel and thus improve thermal stability.

Construction of Non-Precious Metal Self-Supported Electrocatalysts for Oxygen Evolution from a Low-Temperature Immersion Perspective.

Water splitting is considered as a promising technology to solve energy shortage and environmental pollution. Since oxygen evolution reaction (OER) directly affects the efficiency of hydrogen evolution, the preparation of efficient and inexpensive OER catalysts is an urgent problem. "Low-temperature immersion" (LTI) is expected to be a prospective strategy for electrocatalyst preparation due to its simplicity and energy-saving advantages.

A solid-solution modulation strategy in trivalent bismuth-doped gallate phosphors for single substrate tunable emission.

The synthesis conditions of most phosphors doped with lanthanide ions with d-f transition require a reducing atmosphere. The doping Bi ions selected in this study perfectly avoid this requirement, and they are environmentally friendly and safe. Nevertheless, the spectral tuning of Bi is a great challenge that limits its application.

A colorimetric optical thermometry of host-sensitized Pr-doped niobate phosphors based on electronic-rich-site strategy.

Most praseodymium-doped red-emitting phosphors need high-temperature synthesis conditions with a reducing atmosphere. The niobate matrix selected in this work provides a sufficient electron-rich-site environment for praseodymium through charge migration, and praseodymium can be self-reduced in air atmosphere, which is safe and environmentally friendly. By building the [NbO] group → Pr energy transfer and finely modifying the doping concentration of Pr ions, we constructed a dual-luminescence-system of the [NbO] group and Pr.

The role of the Patient-Generated Subjective Global Assessment (PG-SGA) and biochemical markers in predicting anemia patients with cancer.

Purpose: The causes of anemia and the common side effects of cancer are multifactorial. Malnutrition is one of the alleged components of the aforementioned complications. This study planned to investigate the relationship among biochemical markers, Patient-Generated Subjective Global Assessment (PG-SGA), and anemia in cancer patients.

Photoelectrochemical Stripping Analysis.

Electrochemical stripping analysis (ECSA) is a promising method for metal ions detection. However, the low sensitivity and poor reproducibility limits its practical applications. The combination with other powerful detection techniques to address these concerns is highly desirable.

Heterogeneous Bimetallic Phosphide/Sulfide Nanocomposite for Efficient Solar-Energy-Driven Overall Water Splitting.

Solar-driven overall water splitting is highly desirable for hydrogen generation with sustainable energy sources, which need efficient, earth-abundant, robust, and bifunctional electrocatalysts for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Herein, we propose a heterogeneous bimetallic phosphide/sulfide nanocomposite electrocatalyst of NiFeSP on nickel foam (NiFeSP/NF), which shows superior electrocatalytic activity of low overpotentials of 91 mV at -10 mA cm for HER and of 240 mV at 50 mA cm for OER in 1 M KOH solution. In addition, the NiFeSP/NF presents excellent overall water splitting performance with a cell voltage as low as 1.

Sputtering gold nanoparticles on nanoporous bismuth vanadate for sensitive and selective photoelectrochemical aptasensing of thrombin.

In this communication, we report the first demonstration of an efficient photoelectrochemical aptasensor based on sputtering Au nanoparticle-modified nanoporous BiVO for the excellent sensitive and selective detection of thrombin with a low detection limit of 0.5 pM and a large linear range.

Phosphorus Cation Doping: A New Strategy for Boosting Photoelectrochemical Performance on TiO Nanotube Photonic Crystals.

Photoelectrochemical (PEC) water splitting is a promising technique for sustainable hydrogen generation. However, PEC performance on current semiconductors needs further improvement. Herein, a phosphorus cation doping strategy is proposed to fundamentally boost PEC performance on TiO nanotube photonic crystal (TiO NTPC) photoelectrodes in both the visible-light region and full solar-light illumination.

Recognition unit-free and self-cleaning photoelectrochemical sensing platform on TiO nanotube photonic crystals for sensitive and selective detection of dopamine release from mouse brain.

For implementing sensitive and selective detection of biological molecules, the biosensors are been designed more and more complicated. The exploration of detection platform in a simple way without loss their sensitivity and selectivity is always a big challenge. Herein, a prototype of recognition biomolecule unit-free photoelectrochemical (PEC) sensing platform with self-cleaning activity is proposed with TiO nanotube photonic crystal (TiO NTPCs) materials as photoelectrode, and dopamine (DA) molecule as both sensitizer and target analyte.

Topotactic Conversion of Copper(I) Phosphide Nanowires for Sensitive Electrochemical Detection of H2O2 Release from Living Cells.

In this work, we clearly demonstrate for the first time the use of transition-metal phosphides to set up a new cathodic analysis platform for sensitive and selective electrochemical nonenzymatic detection of H2O2. With the help of a facile topotactic conversion method, the noble metal-free electrocatalyst of copper(I) phosphide nanowires on three-dimensional porous copper foam (Cu3P NWs/CF) is fabricated with electrochemical anodized Cu(OH)2 NWs as precursor. The Cu3P NWs/CF-based sensor presents excellent electrocatalytic activity for H2O2 reduction with a detection limit of 2 nM, the lowest detection limit achieved by noble-metal free electrocatalyst, which guarantees the possibility of sensitive and reliable detection of H2O2 release from living tumorigenic cells, thus showing the potential application as a sensitive cancer cell detection probe.

Lithium ion intercalation of 3-D vertical hierarchical TiO2 nanotubes on a titanium mesh for efficient photoelectrochemical water splitting.

In this communication, we report for the first time the demonstration of a lithium ion intercalation strategy to significantly enhance the photoelectrochemical water splitting performance on 3-dimensional vertical hierarchical top-porous-bottom-tubular TiO2 nanotubes on a fabricable titanium mesh.

Sensitive electrochemical nonenzymatic glucose sensing based on anodized CuO nanowires on three-dimensional porous copper foam.

In this work, we proposed to utilize three-dimensional porous copper foam (CF) as conductive substrate and precursor of in-situ growth CuO nanowires (NWs) for fabricating electrochemical nonenzymatic glucose sensors. The CF supplied high surface area due to its unique three-dimensional porous foam structure, and thus resulted in high sensitivity for glucose detection. The CuO NWs/CF based nonenzymatic sensors presented reliable selectivity, good repeatability, reproducibility, and stability.

Colorful titanium oxides: a new class of photonic materials.

In this communication, a new class of photonic materials, namely, two-dimensional titanium oxide-based photonic crystals, are proposed and were fabricated with an electrochemical anodization method. The high structural periodicity of the nanostructures, and the feasible variability of the chemical compositions help to realize tunable photonic bandgaps for selective light absorption in broad wavelength regions.

New Photocathodic Analysis Platform with Quasi-Core/Shell-Structured TiO2@Cu2O for Sensitive Detection of H2O2 Release from Living Cells.

In this work, we clearly demonstrate for the first time the use of a p-type semiconductor, Cu2O, as the core unit of a photocathode to set up a new photocathodic analysis platform. With the help of a facile protection strategy, the Cu2O photocathode presented efficient photoelectrochemical performance for H2O2 sensing with a detection limit of 0.15 μM, which allowed the new photocathodic analysis platform to detect H2O2 released from living tumorigenic cells, thus demonstrating its potential application as a sensitive cancer detection probe.

Photoelectrochemical aptasensor for the sensitive and selective detection of kanamycin based on Au nanoparticle functionalized self-doped TiO2 nanotube arrays.

In this communication, a new photoelectrochemical aptasensor with Au nanoparticle functionalized self-doped TiO2 nanotube arrays (Au/SD-TiO2 NTs) as the core sensing unit and aptamers as the recognition unit was set up to accomplish the sensitive and selective detection of kanamycin with the lowest detection limit of 0.1 nM.

Rational design of binder-free noble metal/metal oxide arrays with nanocauliflower structure for wide linear range nonenzymatic glucose detection.

One-dimensional nanocomposites of metal-oxide and noble metal were expected to present superior performance for nonenzymatic glucose detection due to its good conductivity and high catalytic activity inherited from noble metal and metal oxide respectively. As a proof of concept, we synthesized gold and copper oxide (Au/CuO) composite with unique one-dimensional nanocauliflowers structure. Due to the nature of the synthesis method, no any foreign binder was needed in keeping either Au or CuO in place.