02491nas a2200253   4500008004100000245013900041210006900180260000800249300001400257490000600271520158800277653002001865653002301885653001701908653003101925653002101956653003301977100002402010700002002034700001802054700001902072700001702091856012902108       2025                        eng d00aPhotocatalytic hydrogen evolution by MoO3@g-C3N4 and MoO3@f-MWCNT nanocomposites in deionized and natural seawater under visible light0 aPhotocatalytic hydrogen evolution by MoO3gC3N4 and MoO3fMWCNT na  cMAR  a7175-71890 v83 a<p>
	Visible-light-driven photocatalysts are predominantly useful for converting solar to hydrogen energy via photocatalytic water-splitting reactions. The heterojunction composite materials have exhibited remarkable advantages for visible-light photocatalytic H-2 evolution. We have successfully synthesized MoO3@f-MWCNT and MoO3@g-C3N4 nanocomposites and characterized them using PXRD, UV-DRS, Raman spectroscopy, XPS, PL, TRPL, FE-SEM, HR-TEM, BET, and photocurrent. The photocatalytic water-splitting efficiency of MoO3@f-MWCNT and MoO3@g-C3N4 was measured under visible light (lambda &gt;= 420 nm) irradiation using TEOA as a sacrificial reagent in DI water and natural seawater. The H-2 evolution rate in DI water for MoO3@f-MWCNT is 2313.56 mu mol g(-)(1) h(-)(1), and for MoO3@g-C3N4 is 2530.35 mu mol g(-1) h(-1) with an apparent quantum efficiency (AQE) of 6.38 and 6.93%, respectively. In natural seawater, the H-2 evolution rate is 2632.20 and 2845.06 mu mol g(-1) h(-1), with an AQE of 7.21 and 7.77%, respectively. The rate of H-2 evolution slightly increased in natural seawater than DI water. The Tafel slope values for MoO3@g-C3N4 and MoO3@f-MWCNT are 59 and 92 mV dec(-1), respectively. The lowest Tafel value of MoO3@g-C3N4 exhibited a faster rate of reaction. Thus, the surface interaction between the MoO3 and the porous g-C3N4 materials may create synergistic effects, which facilitate electron transport at the interface and significantly boost the photocatalytic activity. Thus, MoO3@g-C3N4 is a promising photocatalyst for renewable energy production.</p>
10adeionized water10aelectrochemicalHER10aMoO3@f-MWCNT10aMoO3@g-C3N4 nanocomposites10anatural seawater10aphotocatalytic H-2 evolution1 aKangutkar, Raju, S.1 aWalko, Priyanka1 aDhepe, P., L.1 aNayaka, G., P.1 aManjanna, J.  uhttps://library.ncl.res.in/content/photocatalytic-hydrogen-evolution-moo3g-c3n4-and-moo3f-mwcnt-nanocomposites-deionized-and