Parents' Perspectives of Family Engagement with Early Childhood Education and Care During the COVID-19 Pandemic.

The COVID-19 pandemic has created significant challenges for Early Childhood Education and Care (ECEC) services and families, impacting family access to services and their communication and engagement with educators. This study aimed to examine parents' perspectives of family engagement with ECEC services during the pandemic. Primary caregivers in Victoria at the time of recruitment (September-November 2020) were invited to participate. Of the 66 participants who completed an online survey, 25 also took part in semi-structured video call or phone interviews; qualitative findings from these interviews are reported in this paper. Four key themes were conceptualised using a reflexive thematic approach: (1) disruptions to ECEC access and attendance impacting on family routines and relationships, and child development; (2) barriers to family engagement; (3) ECEC educators' support of families and children during the pandemic; and (4) increased parental appreciation of the ECEC profession. Findings revealed that disruptions to ECEC access and routines during the pandemic adversely impacted family engagement, and child learning and social-emotional wellbeing for some families. These were aggravated by other stressors, including increased parental responsibilities in the home, financial and health concerns, and changed work conditions. Findings also demonstrated successful methods used by educators to maintain communication and connections with families. Importantly, parents expressed increasing appreciation of the profession and an increased awareness of the value of family involvement in children's learning. Learnings regarding strategies for effective and alternative ways of engaging families are discussed.

Visible light-induced electronic structure modulation of Nb- and Ta-doped α-Fe2O3 nanorods for effective photoelectrochemical water splitting.

The photoelectrochemical (PEC) water splitting activity of Nb and Ta-doped hematite (α-Fe2O3) nanorods was investigated with reference to electronic structures by in situ synchrotron x-ray absorption spectroscopy (XAS). Current density-potential measurements demonstrate that the PEC activity of α-Fe2O3 nanorods depends strongly on the species and concentrations of dopants. The doping of α-Fe2O3 nanorods with a low level of Nb or Ta can improve their electrical conductivity and thereby facilitate charge transport and reduced electron-hole recombination therein. The photoconversion effects of Nb and Ta-doped α-Fe2O3 by in situ XAS in the dark and under illumination revealed opposite evolutions of the spectral intensities of the Fe L-edge and Nb/Ta L-edge, indicating that charge transfer and a conduction pathway are involved in the photoconversion. Analytic in situ XAS results reveal that the α-Fe2O3 that is doped with a low level of Nb has a greater photoconversion efficiency than that doped with Ta because Nb sites are more active than Ta sites in α-Fe2O3. The correlation between PEC activity and the electronic structure of Nb/Ta-doped α-Fe2O3 is examined in detail using in situ XAS and helps to elucidate the mechanism of PEC water splitting in terms of the electronic structure.

Solution growth of Ta-doped hematite nanorods for efficient photoelectrochemical water splitting: a tradeoff between electronic structure and nanostructure evolution.

Ta-doped hematite (α-Fe2O3) nanorod array films were successfully prepared on fluorine-doped tin dioxide (FTO) coated glass substrates via a facile solution growth process with TaCl5 as a Ta doping precursor. Under 1 sun illumination and at an applied potential of 1.0 V vs. Ag/AgCl, the Ta-doped α-Fe2O3 photoanode with optimized dopant concentration showed a photocurrent density as high as 0.53 mA cm(-2), which was about 3.5 times higher than that of the undoped sample. As demonstrated by Mott-Schottky and X-ray absorption spectroscopy measurements, considerable increase in photoelectrochemical (PEC) performance achieved for Ta-doped α-Fe2O3 nanorod films should be mainly attributed to the increased electron donor density induced by Ta doping. However, with superfluous Ta doping, the [110]-oriented nanorod structure was destroyed, which caused greatly restrained photoinduced holes transferring to the surface and retarded surface water oxidation reaction, leading to decreased PEC water splitting activity. This study clearly demonstrated that doping could be effective to enhance the PEC activity of α-Fe2O3 nanorods as photoanodes, while it is of great necessity to balance the trade-off between the electronic structure and nanostructure evolution by optimizing the dopant concentration, for increased donor density and meanwhile with the nanorod nanostructure well preserved for directed charge transfer.