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Background: Several studies have characterized the experiences of family members caring for patients undergoing chemotherapy; however, information about the experiences of older spousal caregivers with intensive caregiving burdens is unclear. Recently, more older patients have been diagnosed with cancer due to the aging population worldwide. Therefore, this study evaluated the patterns in the experiences of older spousal caregivers of patients undergoing palliative chemotherapy for advanced cancer., Methods: Qualitative research using semi-structured interviews was used in this study involving 10 older spousal caregivers of patients undergoing palliative chemotherapy at a hospital providing advanced cancer care in Japan. The data obtained were analyzed qualitatively and inductively using thematic analysis by Braun and Clarke., Results: Four themes were identified from the narratives of the participants in this study. The first theme was "getting used to living with the disease," indicating that the older spouses gradually became accustomed to living with the patient through continued caregiving. The second theme was "deepening view of life and death," indicating that the older spouses' views of life and death were deepened by being confronted with patients' quality of life until death. The third theme was "anxious about the future," indicating the fear regarding the patient's progressive diseases and anxiety pertaining to continuing care for the patient while dealing with their health problems. The final theme was "desire for a better rest of life," indicating that the couple felt their bond was strengthened through caregiving and wishes to live well for the rest of their lives., Conclusions: The patterns in the experience of older spousal caregivers caring for patients undergoing palliative chemotherapy indicated an aspect of rebuilding their lives as they became accustomed to caregiving, while strengthening their marital bond. The caregiving process involved a mix of emotions, including anxiety about the spousal caregiver's health problems worsening. However, the caregivers recognized the value of their remaining time. Therefore, they had deep concern for the patient's comfort, concealing their feelings so that the patient would feel comfortable. This study can contribute to understanding the challenges faced and support needed by older spousal caregivers., (© 2023. The Author(s).)

The structure and configuration of reaction centers, which dominantly govern the catalytic behaviors, often undergo dynamic transformations under reaction conditions, yet little is known about how to exploit these features to favor the catalytic functions. Here, we demonstrate a facile light activation strategy over a TiO 2 -supported Cu catalyst to regulate the dynamic restructuring of Cu active sites during low-temperature methanol steam reforming. Under illumination, the thermally deactivated Cu/TiO 2 undergoes structural restoration from inoperative Cu 2 O to the originally active metallic Cu caused by photoexcited charge carriers from TiO 2 , thereby leading to substantially enhanced activity and stability. Given the low-intensity solar irradiation, the optimized Cu/TiO 2 displays a H 2 production rate of 1724.1 μmol g -1 min -1 , outperforming most of the conventional photocatalytic and thermocatalytic processes. Taking advantages of the strong light-matter-reactant interaction, we achieve in situ manipulation of the Cu active sites, suggesting the feasibility for real-time functionalization of catalysts.

Methanol steam reforming (MSR) is a promising reaction that enables efficient production and safe transportation of hydrogen, but it requires a relatively high temperature to achieve high activity, leading to large energy consumption. Here, we report a plasmonic ZnCu alloy catalyst, consisting of plasmonic Cu nanoparticles with surface-deposited Zn atoms, for efficient solar-driven MSR without additional thermal energy input. Experimental results and theoretical calculations suggest that Zn atoms act not only as the catalytic sites for water reduction with lower activation energy but also as the charge transfer channel, pumping hot electrons into water molecules and subsequently resulting in the formation of electron-deficient Cu for methanol activation. These merits together with photothermal heating render the optimal ZnCu catalyst a high H 2 production rate of 328 mmol g catalyst -1 h -1 with a solar energy conversion efficiency of 1.2% under 7.9 Suns irradiation, far exceeding the reported conventional photocatalytic and thermocatalytic MSR. This work provides a potential strategy for efficient solar-driven H 2 production and various other energy-demanding industrial reactions through designing alloy catalysts.

Photoreduction of CO 2 to fuels offers a promising strategy for managing the global carbon balance using renewable solar energy. But the decisive process of oriented photogenerated electron delivery presents a considerable challenge. Here, we report the construction of intermolecular cascaded π-conjugation channels for powering CO 2 photoreduction by modifying both intramolecular and intermolecular conjugation of conjugated polymers (CPs). This coordination of dual conjugation is firstly proved by theoretical calculations and transient spectroscopies, showcasing alkynyl-removed CPs blocking the delocalization of electrons and in turn delivering the localized electrons through the intermolecular cascaded channels to active sites. Therefore, the optimized CPs (N-CP-D) exhibiting CO evolution activity of 2247 μmol g -1  h -1 and revealing a remarkable enhancement of 138-times compared to unmodified CPs (N-CP-A).

Semiconductor photocatalysis has received much attention as a potential solution to the worldwide energy shortage and for counteracting environmental degradation. This article reviews state-of-the-art research activities in the field, focusing on the scientific and technological possibilities offered by photocatalytic materials. We begin with a survey of efforts to explore suitable materials and to optimize their energy band configurations for specific applications. We then examine the design and fabrication of advanced photocatalytic materials in the framework of nanotechnology. Many of the most recent advances in photocatalysis have been realized by selective control of the morphology of nanomaterials or by utilizing the collective properties of nano-assembly systems. Finally, we discuss the current theoretical understanding of key aspects of photocatalytic materials. This review also highlights crucial issues that should be addressed in future research activities., (Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

The dynamics of water molecules and the adsorption properties at the V and Y sites on the surface of the photocatalyst YVO(4) have been investigated by first principles molecular dynamics. This system has shown an excellent performance in the production of both hydrogen and oxygen in the ultraviolet region. Yet, its catalytic properties, related to the electronic structure, are poorly understood. Here we show that imperfectly oxygen coordinated V sites (i.e., not fourfold oxygen coordinated vanadium but threefold oxygen coordinated vanadium) exposed on the catalyst surface play a central role in the dissociation of water molecules. By simulating the H(2)O adsorption process and by performing an analysis of the electronic structure of the unoccupied orbitals corresponding to the lowest unoccupied energy level of the system, we can infer that the dissociation of water at these imperfectly oxygen coordinated V sites can promote the proton reduction and is expected to trigger the H(2) generation.

The water absorption properties at the surface of BiVO4 are attracting a great deal of attention because the system is a promising candidate as a photocatalyst operating in the visible light range. This has motivated the present investigation via first principles molecular dynamics, which has revealed that a H2O molecule is adsorbed molecularly, instead of dissociatively, at the fivefold Bi site with an adsorption energy of approximately 0.58 eV/molecule. The band gap of the system shrinks slightly (by approximately 0.2 eV) upon water adsorption and it is likely that oxygen atoms belonging to the adsorbed water molecules to the Bi sites are oxidized, as inferred by the small Bi-Owater equilibrium distance (approximately 2.6-2.8 A) very close to the Bi-O bond in the bulk crystal. In the case of water adsorption at a Bi site, the distance between Hwater and V, which is a reduction site, is larger than in the case of adsorption at a V site, indicating that the proton reduction processes may be suppressed.