IWo experiments tested the idea that empathy-induced helping is due to self-other merging. To manipulate empathy, half of the participants in each experiment received instructions to remain objective while hearing about a young woman in need (low-empathy condition), and half received instructions to imagine her feelings (high-empathy condition). Tb check generality of the empathyhelping relationship, half in each empathy condition learned that the young woman was a student at their university (shared group membership), and half learned that she was a student at a rival university (unshared group membership). Self-reported empathy for and willingness to help the young woman were assessed, and 3 measures of self-other merging were taken. In each experiment, an empathy-helping relationship was found, unqualified by group membership, that could not be accounted for by any of the merging measures.

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Photocatalytic water splitting is a sustainable technology for the production of clean fuel in terms of hydrogen (H2). In the present study, hydrogen (H2) production efficiency of three promising photocatalysts (titania (TiO2-P25), graphitic carbon nitride (g-C3N4), and cadmium sulfide (CdS)) was evaluated in detail using various sacrificial agents. The effect of most commonly used sacrificial agents in the recent years, such as methanol, ethanol, isopropanol, ethylene glycol, glycerol, lactic acid, glucose, sodium sulfide, sodium sulfite, sodium sulfide/sodium sulfite mixture, and triethanolamine, were evaluated on TiO2-P25, g-C3N4, and CdS. H2 production experiments were carried out under simulated solar light irradiation in an immersion type photo-reactor. All the experiments were performed without any noble metal co-catalyst. Moreover, photolysis experiments were executed to study the H2 generation in the absence of a catalyst. The results were discussed specifically in terms of chemical reactions, pH of the reaction medium, hydroxyl groups, alpha hydrogen, and carbon chain length of sacrificial agents. The results revealed that glucose and glycerol are the most suitable sacrificial agents for an oxide photocatalyst. Triethanolamine is the ideal sacrificial agent for carbon and sulfide photocatalyst. A remarkable amount of H2 was produced from the photolysis of sodium sulfide and sodium sulfide/sodium sulfite mixture without any photocatalyst. The findings of this study would be highly beneficial for the selection of sacrificial agents for a particular photocatalyst.

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