Minghai Ma

East China Normal University | ECNU

Photocatalytic hydrogen production is a promising technology that can generate renewable energy. However, light absorption and fast electron transfer are two main challenges that restrict the practical application of photocatalysis. Moreover, most of the composite photocatalysts that possess better photocatalytic performance are fabricated by vario...

Integration of hydrogen generation with organic pollutants removal under the irradiation of visible light is a promising conception in solar energy conversion and environmental protection. However, diverse reaction pathway prohibits the synchronous application of hydrogen evolution and pollutants removal. Herein, we construct a unique reaction syst...

Combination of solid solution construction and co-catalyst coupling was rationally developed and applied for the simultaneous photocatalytic process of hydrogen generation and organic pollutants removal. Formation of unique electron channels via the bridging of CoP with (200) and (220) crystal planes of Cd0.5Mn0.5S releases the hotelectrons irradia...

Phase structure engineering is a newly developed strategy to accelerate the carriers transfer towards hydrogen evolution reaction (HER) under visible light irradiation. In this work, a simple phosphating treatment has been developed to construct in-plane heterophase junctions. An optimal hydrogen generation rate is obtained at 14.68 mmol g⁻¹ h⁻¹ fo...

Renewable and economical generation of hydrogen via electrochemical methods shows great potential in addressing the energy crisis. In this study, an emerging molten salt method was adopted for the synthesis of a cerium-modified rhenium disulfide nanosheet for electrical hydrogen evolution reactions. The prepared 1% Ce-doped rhenium disulfide (ReS 2...

Identifying nonpoint sources of nitrate has been a long-term challenge in mixed land-use watershed. In the present study, we combine dual nitrate isotope, runoff and stream water monitoring to elucidate the nonpoint nitrate sources across land use, and determine the relative importance of biogeochemical processes for nitrate export in a small subur...

Whether ecological restoration of polluted urban rivers would provide suitable breeding habitats for some mosquitoes was not clear yet. It was therefore important to determine how altered river conditions influence mosquito ecology. Monthly data on water quality and larval density were obtained to determine the effects of river systems on the distr...

The fly ashes from hospital waste incinerator were blended with natural alunite to decrease the release of heavy metals. The change in surface chemistry of fly ashes in the absence and presence of alunite was characterized by XRD, TEM, FTIR and potentiometric titration. According to potentiometric titration, the concentration of surface reactive si...

It is demonstrated that nanoparticles are ubiquitous in subsurface sediments; therefore, investigation of the adsorption and desorption of U(VI) on nanoparticles plays vital role in the understanding of the fate and transport of U(VI) in sub-sediment at their initial sources. The nano-alumina was synthesized by self-assemble method and was characte...

The nano goethite and nano alumina were synthesized to investigate the effect of nanoscale size on adsorption–desorption of U(VI) from aqueous solution. It was determined that the site densities of nanoparticles are higher than α-alumina and goethite, whereas slight effect of carbonate on adsorption of U(VI) onto nanoparticles was observed. The max...

Thallium, a highly toxic pollutant, has greater toxicity to mammals than common heavy metals such as lead, cadmium, mercury and efficient techniques for its removal are penurious. In the present study, amorphous hydrous manganese dioxide (HMO), an excellent sorbent for heavy metals retention, was synthesized by using oxidation and chemical precipit...

In the present study, the sorption ability of three metal ions, lead, cadmium, copper, from aqueous solution by tea waste was investigated. Sorption of the evaluated toxic metals by tea waste was pH-dependent, and kinetic data for three metal ions not only indicated a quick sorption process but also were excellently represented by the pseudo-second...

Surface complexation modeling based on diffuse double layer model (DDLM) has been employed to simulate the leaching behaviors of radionuclides (i.e., 60Co2+, 63Ni2+, 64Cu2+ and UO22+) on fly ashes from hospital wastes. The fly ashes were characterized by X-ray diffraction (XRD), potentiometric acid–base titration, and scanning electron microscopy (...