8 research outputs found
Art therapy practices in museum education: A mini review
This article reviews the potential functions and approaches of museum education in alleviating psychological anxiety, particularly the psychological anxiety experienced by adolescents during the COVID-19 pandemic. We outline the main forms of museum education, highlighting how it supports the potential functions of art therapy for psychological anxiety. Thereafter, we review the representative research on museum art therapy practice for different populations to invite discussion, dialogue, and awareness of future directions for museum education and suggest gaps in the research that require further study
Electrocatalytic activity and volatile product selectivity for nitrate reduction at tin-modified Pt(100), Pd(100) and PdâPt(100) single crystal electrodes in acidic media
We prepared Sn-modified Pt(100), Pd(100) and PdâPt(100) single crystal electrodes and investigated the nitrate reduction reaction (NO3RR) activity and the product selectivity for them using online electrochemical mass spectroscopy (OLEMS), also known as differential electrochemical mass spectroscopy (DEMS). OLEMS measurements allowed us to quantify volatile products of N2, N2O and NO and confirm the production of N2 at Sn/Pd(100) but not at Sn/Pt(100). Pd-doping to Pt(100) with a 3 atomic % increased the product selectivity for the NO3RR to N2. These results indicate that the presence of Pd in the (100) surface is the key to produce N2, which seems to be related to the hydrogen adsorption energy to the metal surface. The suppression of hydrogenation of intermediate species at the electrode surface could lead to the production of N2. This work will guide us to understand N2 production mechanism for the NO3RR and develop highly selective electrocatalysts for denitrification
Polyelectrolyte Assisted Synthesis and Enhanced Oxygen Reduction Activity of Pt Nanocrystals with Controllable Shape and Size
The
shape control of platinum nanocrystals is significant to the enhancement
of their catalytic performance in terms of activity and selectivity.
However, it still remains a major challenge to prepare Pt nanocrystals
with tunable shape and clean surface in an eco-friendly way. This
article develops a facile and green strategy to prepare well tuned
platinum nanocrystals employing polyÂ(diallyldimethylammonium chloride)
(PDDA) as the capping agent, reductant, and stabilizer simultaneously
in a facile hydrothermal process. It is identified that the variation
of PDDA concentration is crucial to control the growth of crystalline
facets, leading to the formation of cubic, truncated cubic, and octahedral
Pt nanocrystals with sizes tunable from ca. 17 nm to ca. 50 nm. The
resultant Pt nanocrystals exhibit excellent electrocatalytic activity
and stability toward the oxygen reduction reaction (ORR) in acidic
media compared with those of commercial Pt black and the state-of-the-art
Pt/C catalyst. It is proposed that the preferential Pt surface and
the decoration of PDDA, which modulates the electronic structures
and electrooxidation of Pt nanocrystals, synergistically contribute
to the enhanced catalytic performance