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Enhanced geothermal systems (EGSs) are expected to be one of the most promising methods of supplying energy to meet the world's increasing energy demand. However, little attention has been paid to the influence of the number of production wells on the heat extraction performance of an EGS. A series of numerical simulations is organized in this work with three cases: Case 1 (one production well), Case 2 (two production wells), and Case 3 (three production wells). The results indicate that a slight temperature difference exists among the three simulation cases at the planes X-Y (Z = 0) and Y-Z (X = 0), while Case 1 ensures a greater cooling area, and the more production wells, the smaller the cooling area during the heat extraction in plane X-Z (Y = 0). In addition, the continuous injection of cooling water from the injection well and its arrival at different reference points enable the temperature at each point to declining with a variable amplitude of variation. This work also sets an efficiency (ef) to investigate the temperature variation in the EGS, where Case 1 exhibits a similar variation as Case 2, which is also similar to Case 3. It is hoped that this work will play a guiding role in EGS-related exploration and exploitation. [ABSTRACT FROM AUTHOR]

Photodynamic therapy (PDT) holds great potential in cancer therapy by virtue of its high precision, non‐invasiveness and low side effect. However, the hypoxic environment of solid tumor significantly restricts the efficacy of PDT. To improve the hypoxic microenvironment, inhibiting the hypoxia‐inducible factor 1α (HIF‐1α) is a rational approach. However, the related small molecule inhibitors suffer from the issue of poor tumor targeting. Herein, we design a nanophotosensitizer AmPPa NP which can inhibit HIF‐1α and conduct PDT with improved efficacy. AmPPa NP is prepared by first encapsulating a hydrophobic NIR photosensitizer mPPa into a carboxyl‐rich amphiphilic copolymer PSMA‐PEG, and then loading a positively charged HIF‐1α inhibitor acriflavine (ACF) on the surface of nanoparticle via electrostatic interaction. Under 635 nm laser irradiation, mPPa within nanoparticles can not only generate 1O2 for PDT but also emit NIR fluorescence signal for tumor imaging. In addition, such design makes ACF can be selectively released under acidic tumor microenvironment. Compared with mPPa NP without ACF loading, AmPPa NP can effectively inhibit HIF‐1α and shows improved PDT efficacy both in vitro and in vivo. This study thus provides a nanotheranostic platform for NIR fluorescence imaging‐guided enhanced PDT. [ABSTRACT FROM AUTHOR]

This document is a corrigendum for an article titled "The number of production wells affects the heat extraction performance of an enhanced geothermal system: insights from engineering-scale 3D THM coupling numerical simulations." The corrigendum acknowledges an error in the funding statement of the original article, where the financial support of the China Three Gorges Corporation was omitted. The correct funding statement is provided in the corrigendum. The authors apologize for the error and state that it does not impact the scientific conclusions of the article. The corrigendum also includes information about the publication details and the authors of the original article. [Extracted from the article]

Sodium-ion hybrid capacitor (SIHC) is one of the most promising alternatives for large-scale energy storage due to its high energy and power densities, natural abundance, and low cost. However, overcoming the imbalance between slow Na+ reaction kinetics of battery-type anodes and rapid ion adsorption/desorption of capacitive cathodes is a significant challenge. Here, we propose the high-rate-performance NiS2@OMGC anode material composed of monodispersed NiS2 nanocrystals (8.8 ± 1.7 nm in size) and N, S-co-doped graphenic carbon (GC). The NiS2@OMGC material has a three-dimensionally ordered macroporous (3DOM) morphology, and numerous NiS2 nanocrystals are uniformly embedded in GC, forming a core–shell structure in the local area. Ultrafine NiS2 nanocrystals and their nano–microstructure demonstrate high pseudocapacitive Na-storage capability and thus excellent rate performance (355.7 mAh/g at 20.0 A/g). A SIHC device fabricated using NiS2@OMGC and commercial activated carbon (AC) cathode exhibits ultrahigh energy densities (197.4 Wh/kg at 398.8 W/kg) and power densities (43.9 kW/kg at 41.3 Wh/kg), together with a long life span. This outcome exemplifies the rational architecture and composition design of this type of anode material. This strategy can be extended to the design and synthesis of a wide range of high-performance electrode materials for energy storage applications. [ABSTRACT FROM AUTHOR]

Metal phosphides are promising noble metal‐free electrocatalysts for hydrogen evolution reaction (HER), but they usually suffer from inferior stability and thus are far from the device applications. We reported a facile and controllable synthetic method to prepare metal‐incorporated M‐FeP nanoparticles (M=Cr, Mn, Co, Fe, Ni, Cu, and Mo) with the guide of the density functional theory (DFT). The evaluated HER activity sequence was consistent with the DFT predictions, and cobalt was revealed to be the appropriate dopant. With the optimization of the Co/Fe ratio, the Fe0.67Co0.33P/C only required overpotentials of 67 mV and 129 mV to obtain the cathodic current density of 10 and 100 mA cm−2, respectively. It maintained the initial activity in the 10 h stability test, surpassing the other Co‐FeP/C catalysts. Ex situ experiments demonstrated that the decreased element leaching and the increased surface phosphide content contributed to the high stability of the Fe0.67Co0.33P/C. A proton exchange membrane water electrolyzer was assembled using the Fe0.67Co0.33P/C as the cathodic catalyst. It showed a current density of 0.8 A cm−2 at the applied voltage of 2.0 V and retained the initial activity in the 1000 cycles' stability test, suggesting the potential application of the catalysts. [ABSTRACT FROM AUTHOR]

Metal phosphides are promising noble metal-free electrocatalysts for hydrogen evolution reaction (HER), but they usually suffer from inferior stability and thus are far from the device applications. We reported a facile and controllable synthetic method to prepare metal-incorporated M-FeP nanoparticles (M=Cr, Mn, Co, Fe, Ni, Cu, and Mo) with the guide of the density functional theory (DFT). The evaluated HER activity sequence was consistent with the DFT predictions, and cobalt was revealed to be the appropriate dopant. With the optimization of the Co/Fe ratio, the Fe 0.67 Co 0.33 P/C only required overpotentials of 67 mV and 129 mV to obtain the cathodic current density of 10 and 100 mA cm -2, respectively. It maintained the initial activity in the 10 h stability test, surpassing the other Co-FeP/C catalysts. Ex situ experiments demonstrated that the decreased element leaching and the increased surface phosphide content contributed to the high stability of the Fe 0.67 Co 0.33 P/C. A proton exchange membrane water electrolyzer was assembled using the Fe 0.67 Co 0.33 P/C as the cathodic catalyst. It showed a current density of 0.8 A cm -2 at the applied voltage of 2.0 V and retained the initial activity in the 1000 cycles' stability test, suggesting the potential application of the catalysts., (© 2022 Wiley-VCH GmbH.)