Publications by authors named "H Freund"
Article Synopsis
- The study aimed to evaluate a guided internet- and smartphone-based gratitude intervention’s effectiveness in reducing repetitive negative thinking among adults, focusing on cognitive, emotional, and behavioral aspects of gratitude.
- Participants (200 adults) were randomly assigned to either receive the gratitude intervention over four sessions or join a control waiting list, with their repetitive negative thinking assessed at three months, and additional evaluations at six weeks and six months.
- Results showed that those who completed the gratitude intervention reported significantly lower levels of repetitive negative thinking and improvements in depression and anxiety symptoms, suggesting that gratitude-focused interventions could be a beneficial approach for managing these issues.
Growth and Structure of Ultrathin Iron Silicate and Iron Germanate Films.
Gina Peschel Alexander Fuhrich Dietrich Menzel Mirali Jahangirzadeh Varjovi Sergio Tosoni Hans-Joachim Freund
J Phys Chem C Nanomater Interfaces
November 2024
Article Synopsis
- The study explores the growth and structure of ultrathin iron silicate and iron germanate films on a ruthenium substrate, focusing on how temperature affects their formation.
- These two-dimensional films serve as simplified models for more complex, catalytically active structures like zeolites, which have applications as catalysts and molecular sieves.
- Researchers used advanced experimental techniques for real-time analysis and theoretical modeling to reveal that both film systems consist of a two-layer structure, with distinct compositions impacting the arrangement and properties of iron atoms within the films.
Periodic open cellular structures (POCS) represent a promising new class of structured internals as next-generation catalyst supports in reactors or structured packing elements in separation columns. POCS feature a well-defined morphology and can be fabricated with high reproducibility even for complex geometries by means of additive manufacturing. This results in a uniform and easily controllable flow field, which allows for adjusting the heat and mass transport processes to realize optimal process conditions.
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- MnO(001) thin films were grown on an Au(111) substrate, and their interaction with water molecules was studied using infrared reflection absorption spectroscopy (IRAS) and thermal desorption spectroscopy (TDS).
- The research identified two types of water binding pathways on the oxide films: one where water molecules adsorb on flat surfaces (terraces), and another where water breaks apart at defects, specifically oxygen vacancies influenced by manganese (Mn) sites.
- Both IRAS and TDS findings emphasize the significant role of surface defects in how MnO interacts with adsorbed water, affecting its overall adsorption behavior.