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Ternary solvent boosts two-dimensional perovskites

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Science Bulletin 2017年第7期62卷 462-463页

作者： Miaoqiang Lyu Lianzhou Wang Nanomaterials centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of Queensland

In the past few years,organic–inorganic/inorganic lead halide perovskites,most notably CH3NH3Pb I3and its mixed cation/anion compounds,have attracted tremendous research interests in a wide range of different disciplines,which is largely initialized by their unprecedented success in low-cost and highly efficient solar *** certified efficiencies of over 22%in the lab-scale devices,

关键词： Pb Ternary solvent boosts two-dimensional perovskites NH

Perovskite solar modules hit new efficiency record

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Science Bulletin 2017年第19期62卷 1293-1294页

作者： Yang Bai Lianzhou Wang Nanomaterials centre Australian Institute for Bioengineering and Nanotechnology and School of Chemical EngineeringThe University of Queensland

The last few years witnessed exceptional advancement of organohalide perovskite photovoltaics owing to their intriguing optoelectronic *** power conversion efficiency(PCE)of the state-of-art lab-scale perovskite solar... 详细信息

关键词：太阳能电池钙钛矿组件功率转换效率实验室规模光电特性 PSCs 孔面积

Recent Progress on Visible Light Responsive Heterojunctions for Photocatalytic Applications

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Journal of Materials Science & Technology 2017年第1期33卷 1-22页

作者： Songcan Wang Jung-Ho Yun Bin Luo Teera Butburee Piangjai Peerakiatkhajohn Supphasin Thaweesak Mu Xiao Lianzhou Wang Nanomaterials centre School of Chemical EngineeringAustralian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQLD 4072Australia

Photocatalysis has attracted much attention in recent years due to its potential in solving energy and environmental issues. Even though numerous achievements have been made, the photocatalytic systems developed to date are still far from practical applications due to the low efficiency and poor durability. Efficient light absorption and charge separation are two of the key factors for the exploration of high performance photocatalytic systems, which is generally difficult to be obtained in a single photocata- lyst. The combination of various materials to form heterojunctions provides an effective way to better harvest solar energy and to facilitate charge separation and transfer, thus enhancing the photocatalytic activity and stability. This review concisely summarizes the recent development of visible light respon- sive heterojunctions, including the preparation and performances of semiconductor/semiconductor junctions, semiconductor/cocatalyst junctions, semiconductor/metal junctions, semiconductor/non- metal junctions, and surface heterojunctions, and their mechanism for enhanced light harvesting and charge separation/transfer.

关键词： Heterojunction Photocatalysis Water splitting Carbon dioxide reduction Organic pollutant degradation Visible light

Characterisation of dissolved organic matter in stormwater using high-performance size exclusion chromatography

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Journal of Environmental Sciences 2016年第4期28卷 236-245页

作者： Huiping Huang Christopher W.K.Chow Bo Jin school of chemical engineering The University of Adelaide school of Earth and Environmental Sciences The University of Adelaide australian Water Quality centre SA Water Corporation

Understanding the complexity of dissolved organic matter（DOM）in stormwater has drawn a lot of interest,since DOM from stormwater causes not only environmental impacts,but also worsens downstream aquatic quality associated with water supply and *** study introduced and employed high-performance size exclusion chromatography（HPSEC）coupled with an ultraviolet–visible（UV–vis）diode array detector to assess changes in stormwater-associated DOM *** DOM was also analysed in relation to storm event characteristics,water quality and spectroscopic *** tools were used to determine the correlations within DOM and water quality *** showed that dissolved organic carbon（DOC）and UV absorbance at 254 nm（UV（254））as conventional DOM parameters were found to be correlated well to the changes in stormwater quality during each of the three storm events *** detector wavelengths（210and 254 nm）and their ratio（A（210）/A（254））were found to provide additional information on the physiochemical properties of stormwater-associated *** study indicated that A（210）/A（254） is an important parameter which could be used to estimate the DOM proportions of functional groups and conjugated carbon *** study provided also an understanding of stormwater quality constituents through assessing variability and sensitivity for various parameters,and the additional information of rainfall characteristics on runoff quality data for a better understanding of parameter correlations and influences.

关键词： Stormwater Dissolved organic matter HPSEC

Bismuth based photoelectrodes for solar water splitting

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Journal of Energy Chemistry 2021年第10期30卷 517-530,I0014页

作者： Sabiha Akter Monny Zhiliang Wang Muxina Konarova Lianzhou Wang Nanomaterials centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaQLD 4072Australia

Photoelectrochemical water splitting is a sustainable path to generate valuable hydrogen using sunlight and water as the only *** significant efforts to date,it is still a challenge to achieve photoelectrode with superior performance and long-term *** bismuth-based semiconductor materials have demonstrated excellent visible light harvesting capability and suitable band edge for water ***,we summarized the latest studies conducted on bismuth-based photoelectrodes for photoelectrochemical water ***,photoelectrochemical properties of copper bismuth oxide(CuBi_(2)O_(4)),bismuth ferrites(BiFeO_(3),Bi_(2)Fe_(4)O_(9)),bismuth vanadate(BiVO_(4)),bismuth tungstate(Bi_(2)WO_(6)),bismuth molybdate(Bi_(2)MoO_(6))and bismuth oxyhalids(BiOX,X=I,Cl,Br)are *** to achieve high stability and photolectrochemical performance were discussed in the aspects of nanostructure formation,heterostructure assembly,practical defect engineering,preferential facet growth and oxygen evolution catalyst incorporation.

关键词： Photocathode Photoanode Bismuth Photoelectrochemical water splitting

Revisiting solar hydrogen production through photovoltaicelectrocatalytic and photoelectrochemical water splitting

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Frontiers in Energy 2021年第3期15卷 596-599页

作者： Zhiliang WANG Yuang GU Lianzhou WANG Nanomaterials centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaQLD 4072Australia

Photoelectrochemical(PEC)water splitting is regarded as a promising way for solar hydrogen production,while the fast development of photovoltaic-electrolysis(PV-EC)has pushed PEC research into an embarrassed *** this paper,a comparison of PEC and PV-EC in terms of efficiency,cost,and stability is conducted and briefly *** is suggested that the PEC should target on high solar-to-hydrogen efficiency based on cheap semiconductors in order to maintain its role in the technological race of sustainable hydrogen production.

关键词： hydrogen production photovoltaic electrocatalysis photoelectrocatalysis water splitting

Chloramine demand estimation using surrogate chemical and microbiological parameters

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Journal of Environmental Sciences 2017年第7期29卷 1-7页

作者： Sina Moradi Sanly Liu Christopher W.K.Chow John van Leeuwen David Cook Mary Drikas Rose Amal school of chemical engineering The University of New South Wales australian Water Quality centre SA Water Corporation centre for Water Management and Reuse School of Natural and Built EnvironmentsUniversity of South Australia

A model is developed to enable estimation of chloramine demand in full scale drinking water supplies based on chemical and microbiological factors that affect chloramine decay rate via nonlinear regression analysis *** model is based on organic character（specific ultraviolet absorbance（SUVA）） of the water samples and a laboratory measure of the microbiological（Fm） decay of *** applicability of the model for estimation of chloramine residual（and hence chloramine demand） was tested on several waters from different water treatment plants in Australia through statistical test analysis between the experimental and predicted *** showed that the model was able to simulate and estimate chloramine demand at various times in real drinking water *** elucidate the loss of chloramine over the wide variation of water quality used in this study,the model incorporates both the fast and slow chloramine decay *** significance of estimated fast and slow decay rate constants as the kinetic parameters of the model for three water sources in Australia was *** was found that with the same water source,the kinetic parameters remain the *** modelling approach has the potential to be used by water treatment operators as a decision support tool in order to manage chloramine disinfection.

关键词： Chloramine demand Drinking water treatment plants Modelling

Developing a chloramine decay index to understand nitrification:A case study of two chloraminated drinking water distribution systems

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Journal of Environmental Sciences 2017年第7期29卷 170-179页

The management of chloramine decay and the prevention of nitrification are some of the critical issues faced by water utilities that use chloramine as a *** this study,potential association between high performance size exclusion chromatography（HPSEC）data obtained with multiple wavelength Ultraviolet（UV） detection from two drinking water distribution systems in Australia and nitrification occurrence was *** increase in the absorbance signal of HPSEC profiles with UV detection at λ = 230 nm between apparent molecular weights of 200 to 1000 Da was observed at sampling sites that experienced rapid chloramine decay and nitrification while its absorbance signal at λ =254 nm decreased.A chloramine decay index（C.D.I） defined as the ratio of area beneath the HPSEC spectra at two different wavelengths of 230 and 254 nm,was used in assessing chloramine decay *** *** of waters at locations that experienced nitrification were consistently higher than locations not experiencing nitrification.A simulated laboratory study showed that the formation of nitrite/nitrate and/or soluble microbial products and/or the release of extracellular polymeric substances（EPS） during nitrification may contribute to the *** findings suggest that C.D.I derived from HPSEC with multiple wavelength UV detection could be an informative index to track the occurrence of rapid chloramine decay and nitrification.

关键词： HPSEC Water distribution systems Nitrification Chloramine decay

High-performance size exclusion chromatography with a multi-wavelength absorbance detector study on dissolved organic matter characterisation along a water distribution system

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Journal of Environmental Sciences 2016年第6期28卷 235-243页

作者： Huiping Huang Emma Sawade David Cook Christopher W.K.Chow Mary Drikas Bo Jin school of chemical engineering The University of Adelaide australian Water Quality centre SA Water Corporation250 Victoria Square school of Earth and Environmental Sciences The University of Adelaide

This study examined the associations between dissolved organic matter（DOM） characteristics and potential nitrification occurrence in the presence of chloramine along a drinking water distribution system. High-performance size exclusion chromatography（HPSEC） coupled with a multiple wavelength detector（200–280 nm） was employed to characterise DOM by molecular weight distribution, bacterial activity was analysed using flow cytometry, and a package of simple analytical tools, such as dissolved organic carbon, absorbance at 254 nm, nitrate,nitrite, ammonia and total disinfectant residual were also applied and their applicability to indicate water quality changes in distribution systems were also evaluated. Results showed that multi-wavelength HPSEC analysis was useful to provide information about DOM character while changes in molecule weight profiles at wavelengths less than 230 nm were also able to be related to other water quality parameters. Correct selection of the UV wavelengths can be an important factor for providing appropriate indicators associated with different DOM compositions. DOM molecular weight in the range of 0.2–0.5 kDa measured at210 nm correlated positively with oxidised nitrogen concentration（r = 0.99）, and the concentrations of active bacterial cells in the distribution system（r = 0.85）. Our study also showed that the changes of DOM character and bacterial cells were significant in those sampling points that had decreases in total disinfectant residual. HPSEC-UV measured at210 nm and flow cytometry can detect the changes of low molecular weight of DOM and bacterial levels, respectively, when nitrification occurred within the chloraminated distribution system.

关键词： HPSEC-UV Distribution system DOM Sum of nitrate and nitrite concentration