id	keyword
american_scientific_journal-5343	tio2
american_scientific_journal-5343	wo3
american_scientific_journal-5343	heterostructures
american_scientific_journal-5343	research
american_scientific_journal-5343	band
american_scientific_journal-5343	solution
american_scientific_journal-5343	technology
american_scientific_journal-5343	xps
american_scientific_journal-5343	scientific